{"title":"HVAC","description":"\u003cp\u003eShop HVAC parts and supplies including filters, thermostats, motors, capacitors, and more for heating, ventilation, and air conditioning systems.\u003c\/p\u003e","products":[{"product_id":"xp98-multi-purpose-lubricating-oil-highest-quality-1","title":"Supco MO98 Non-Gumming Lubricating Oil 4 oz – Appliance \u0026 HVAC Maintenance","description":"\u003cstyle\u003e\n.hero-banner{position:relative;background:linear-gradient(135deg,rgba(0,0,0,0.82) 60%,rgba(0,0,0,0.45) 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:36px 32px;border-radius:8px;margin:0 0 28px 0;color:#fff;}\n.hero-banner h2{margin:0 0 6px 0;font-size:1.55em;font-weight:900;letter-spacing:0.3px;}\n.hero-banner .label{display:inline-block;background:#c8a400;color:#000;font-size:0.72em;font-weight:800;text-transform:uppercase;letter-spacing:1px;padding:3px 10px;border-radius:3px;margin-bottom:12px;}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}\n.hero-specs span{background:rgba(255,255,255,0.13);border:1px solid rgba(255,255,255,0.25);border-radius:4px;padding:5px 13px;font-size:0.82em;font-weight:700;letter-spacing:0.3px;}\n.pro-tip{background:#1a1a2e;border-left:4px solid #c8a400;padding:16px 20px;border-radius:6px;margin:24px 0;color:#f0f0f0;font-size:0.95em;line-height:1.6;}\n.pro-tip strong{color:#c8a400;}\n.upsell-box{background:#ffecd1;border-left:4px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:6px;}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM-Grade Maintenance Supply\u003c\/div\u003e\n  \u003ch2\u003eSupco MO98 Non-Gumming Lubricating Oil – 4 oz\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# MO98\u003c\/span\u003e\n    \u003cspan\u003e4 oz Flexible-Spout Bottle\u003c\/span\u003e\n    \u003cspan\u003eParaffin Base Formula\u003c\/span\u003e\n    \u003cspan\u003eAppliances \u0026amp; HVAC\u003c\/span\u003e\n    \u003cspan\u003eHigh-Temp Rated\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eSqueaky Motor or Stiff Bearings? Supco MO98 Non-Gumming Oil – Restore Smooth Operation Fast\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eFriction, noise, and premature wear in appliance motors and HVAC components are almost always caused by dried-out or contaminated lubrication.\u003c\/strong\u003e In most washers, dryers, refrigerators, and HVAC units, motor bearings and moving shafts require periodic lubrication to maintain quiet, efficient operation. When lubrication fails, components run hot, wear accelerates, and noise increases until the part seizes or fails entirely. \u003cstrong\u003e⚡ Routine lubrication is the single most effective way to extend appliance motor and bearing life.\u003c\/strong\u003e \u003cstrong\u003eSupco MO98\u003c\/strong\u003e is the professional-grade non-gumming oil that technicians and DIYers rely on to restore smooth, quiet operation without residue buildup.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART? --\u003e\n\u003ch3\u003e❓ Is This the Right Product?\u003c\/h3\u003e\n\u003cp\u003eMO98 is the correct lubricant if ANY of the following apply:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e✔ Motor bearings are squeaking, grinding, or running louder than normal\u003c\/li\u003e\n  \u003cli\u003e✔ Appliance shaft or drum is stiff or slow to start rotating\u003c\/li\u003e\n  \u003cli\u003e✔ Performing routine preventive maintenance on motors or fans\u003c\/li\u003e\n  \u003cli\u003e✔ Replacing a part and lubricating the new component before reassembly\u003c\/li\u003e\n  \u003cli\u003e✔ Working on HVAC blower motors, condenser fan motors, or evaporator fans\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure which lubricant is right for your application? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON USE CASES --\u003e\n\u003ch3\u003e🔧 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWasher and dryer motor bearings — most common appliance use\u003c\/li\u003e\n  \u003cli\u003eRefrigerator evaporator fan motor shafts\u003c\/li\u003e\n  \u003cli\u003eHVAC blower motor and condenser fan motor bearings\u003c\/li\u003e\n  \u003cli\u003eDishwasher pump motor shafts\u003c\/li\u003e\n  \u003cli\u003eRange hood fan motor bearings\u003c\/li\u003e\n  \u003cli\u003eGeneral appliance and industrial machinery lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If your component is squeaking, stiff, or running hot, MO98 is the correct maintenance solution.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, a single application restores quiet, smooth operation immediately.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Product Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MO98\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Non-Gumming Lubricating Oil — Paraffin Base\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4 oz bottle with flexible precision spout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormula:\u003c\/strong\u003e High-temperature rated, non-gumming, residue-free paraffin base\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Supco — trusted OEM-grade HVAC and appliance supply brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- UPSELL BOX --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n  \u003cstrong\u003e⚠️ Recommended for Complete Maintenance:\u003c\/strong\u003e\u003cbr\u003e\n  If you’re lubricating a motor bearing during a part replacement, clean the shaft with a lint-free cloth before applying MO98 — old dried lubricant and debris will contaminate the fresh oil and accelerate wear. A clean surface ensures maximum oil adhesion and the longest possible service interval.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Application Instructions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: EASY — 5 minutes.\u003c\/strong\u003e Disconnect power to the appliance before accessing any motor or bearing. Use the flexible spout to apply 2–3 drops directly to the bearing surface, motor shaft, or lubrication port — do not over-apply. Rotate the shaft by hand to distribute the oil evenly, then wipe away any excess with a lint-free cloth before reassembly. For HVAC motors with oil ports, apply through the port until resistance is felt.\u003c\/p\u003e\n\n\u003c!-- COMPATIBLE MODELS --\u003e\n\u003ch3\u003e✓ Compatible Applications\u003c\/h3\u003e\n\u003cp\u003eSuitable for use on Whirlpool, Maytag, GE, Samsung, LG, Frigidaire, and most major brand appliance motors and bearings, plus residential and light commercial HVAC blower and condenser fan motors. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify compatibility\u003c\/a\u003e with your specific model.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n  \u003cstrong\u003eLubricate Every Time You Open the Machine:\u003c\/strong\u003e\u003cbr\u003e\n  Any time you disassemble an appliance for a repair — whether it’s a belt, bearing, or motor replacement — apply a drop of MO98 to every accessible bearing and shaft before closing up. The incremental cost is negligible, but it extends the life of every moving component and prevents the next noise complaint from becoming a full motor replacement.\n\u003c\/div\u003e\n\n\u003c!-- BIDIR MODEL HUB LINKS --\u003e\n\u003cp\u003eRelated maintenance guides: \u003ca href=\"\/pages\/whirlpool-washer-motor-maintenance\"\u003eWhirlpool Washer Motor Maintenance\u003c\/a\u003e, \u003ca href=\"\/pages\/dryer-motor-lubrication-guide\"\u003eDryer Motor Lubrication Guide\u003c\/a\u003e, \u003ca href=\"\/pages\/hvac-blower-motor-maintenance\"\u003eHVAC Blower Motor Maintenance\u003c\/a\u003e\u003c\/p\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50282244178209,"sku":"MO98","price":9.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Supco-MO98-High-Grade-Lubricating-Oil-in-Zoom-Spout.jpg?v=1760317135"},{"product_id":"series-400-pleated-filter-16-x-25-x-5-merv-10","title":"Series 400 Pleated Air Filter 16\" x 25\" x 5\" MERV 10 – Replacement HVAC Filter","description":"\u003cstyle\u003e\n.hero-banner{position:relative;background:linear-gradient(135deg,rgba(0,0,0,0.82) 60%,rgba(0,0,0,0.45) 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:36px 32px;border-radius:8px;margin:0 0 28px 0;color:#fff;}\n.hero-banner h2{margin:0 0 6px 0;font-size:1.55em;font-weight:900;letter-spacing:0.3px;}\n.hero-banner .label{display:inline-block;background:#c8a400;color:#000;font-size:0.72em;font-weight:800;text-transform:uppercase;letter-spacing:1px;padding:3px 10px;border-radius:3px;margin-bottom:12px;}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}\n.hero-specs span{background:rgba(255,255,255,0.13);border:1px solid rgba(255,255,255,0.25);border-radius:4px;padding:5px 13px;font-size:0.82em;font-weight:700;letter-spacing:0.3px;}\n.pro-tip{background:#1a1a2e;border-left:4px solid #c8a400;padding:16px 20px;border-radius:6px;margin:24px 0;color:#f0f0f0;font-size:0.95em;line-height:1.6;}\n.pro-tip strong{color:#c8a400;}\n.upsell-box{background:#ffecd1;border-left:4px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:6px;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eGenuine Replacement HVAC Filter\u003c\/div\u003e\n  \u003ch2\u003eSeries 400 Pleated Air Filter 16\" × 25\" × 5\" MERV 10 – Replacement HVAC Filter\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003eSKU: 1011116\u003c\/span\u003e\n    \u003cspan\u003e16\" × 25\" × 5\"\u003c\/span\u003e\n    \u003cspan\u003eMERV 10\u003c\/span\u003e\n    \u003cspan\u003ePleated Design\u003c\/span\u003e\n    \u003cspan\u003eResidential \u0026amp; Commercial\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC System Running Dirty or Air Quality Declining? Series 400 MERV 10 Filter 16”×25”×5” – Restore Clean Airflow Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eA clogged or expired HVAC filter is the single most common cause of reduced airflow, increased energy consumption, and declining indoor air quality in residential and commercial systems.\u003c\/strong\u003e The Series 400 Pleated Filter is a MERV 10-rated replacement filter sized at 16” × 25” × 5” — designed to capture dust, pollen, mold spores, pet dander, and fine particulates that pass through lower-rated filters. When the filter is overdue for replacement, the HVAC system works harder, airflow drops, and allergen levels rise throughout the space. \u003cstrong\u003e⚡ A dirty filter is the leading cause of HVAC system strain and premature equipment failure.\u003c\/strong\u003e The \u003cstrong\u003eSeries 400 MERV 10 filter\u003c\/strong\u003e restores full airflow and effective particulate capture immediately upon installation.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Filter?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct filter if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e✔ Your HVAC system uses a 16” × 25” × 5” filter slot (verify actual slot dimensions before ordering)\u003c\/li\u003e\n  \u003cli\u003e✔ Your system is compatible with MERV 10 filtration — check your equipment manual if unsure\u003c\/li\u003e\n  \u003cli\u003e✔ You want balanced filtration: effective allergen capture without excessive airflow restriction\u003c\/li\u003e\n  \u003cli\u003e✔ Your current filter is clogged, expired, or past its recommended replacement interval\u003c\/li\u003e\n  \u003cli\u003e✔ You are replacing a Series 400 or equivalent pleated 5-inch media filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eContact us with your system model\u003c\/a\u003e — we’ll confirm compatibility before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Signs Your Filter Needs Replacing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReduced airflow from vents — system running but rooms not reaching set temperature\u003c\/li\u003e\n  \u003cli\u003eIncreased dust accumulation on surfaces despite regular cleaning\u003c\/li\u003e\n  \u003cli\u003eAllergy or respiratory symptoms worsening indoors\u003c\/li\u003e\n  \u003cli\u003eHVAC system running longer cycles than normal — energy bills increasing\u003c\/li\u003e\n  \u003cli\u003eVisible grey or brown discolouration on the filter media when inspected\u003c\/li\u003e\n  \u003cli\u003eFilter has been in service longer than the manufacturer’s recommended interval\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these signs match, replacing the filter is the fastest and lowest-cost fix for HVAC performance and air quality.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Filter Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 1011116\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Series 400 Pleated Filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 16” × 25” × 5” (nominal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMERV Rating:\u003c\/strong\u003e MERV 10 — captures particles 1–3 microns at 50–64.9% efficiency; particles 3–10 microns at 85%+ efficiency\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Pleated media, rigid frame, extended surface area for longer service life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Residential and light commercial HVAC systems, forced-air furnaces, air handlers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n  \u003cstrong\u003e⚠️ Keep a Spare on Hand:\u003c\/strong\u003e\u003cbr\u003e\n  5-inch media filters typically last 6–12 months depending on system runtime and indoor air quality — ordering a second filter at the same time ensures you’re never caught with an overdue filter and no replacement on hand. Consistent replacement intervals are the single most effective way to extend HVAC equipment life.\n\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Very Easy — 2–5 min, no tools required.\u003c\/strong\u003e Turn off the HVAC system before replacing the filter. Locate the filter slot in your air handler or furnace, note the airflow direction arrow on the old filter, and slide it out. Insert the new Series 400 filter with the airflow arrow pointing toward the blower (away from the return air duct). Confirm the filter seats flush with no gaps around the frame, then restore power to the system.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n  \u003cstrong\u003eCheck Your System’s Blower Capacity Before Upgrading to MERV 10:\u003c\/strong\u003e\u003cbr\u003e\n  MERV 10 filters provide excellent allergen capture but create slightly more airflow resistance than MERV 8 filters — most modern residential systems handle this without issue, but older or undersized blowers may struggle. If your system runs longer cycles or airflow seems reduced after installing a higher-MERV filter, check your equipment manual for the maximum recommended MERV rating. When in doubt, MERV 8 is the safe universal choice; MERV 10 is ideal for households with pets or allergy sufferers.\n\u003c\/div\u003e\n\n\u003cp\u003eRelated guides and filter hubs: \u003ca href=\"\/pages\/hvac-filters\"\u003eHVAC Filters\u003c\/a\u003e, \u003ca href=\"\/pages\/merv-10-filters\"\u003eMERV 10 Filters\u003c\/a\u003e, \u003ca href=\"\/pages\/16x25x5-filters\"\u003e16” × 25” × 5” Replacement Filters\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003e✓ Model-Specific Repair Pages\u003c\/h2\u003e\n\u003cdiv class=\"model-link-grid\"\u003e\n  \u003ca href=\"\/pages\/kenmore-110-series-dryer-parts-whirlpool-built\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eGE SERIES Refrigerator Parts \u0026amp; Repair Guide\u003c\/a\u003e\n\u003c\/div\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50282387112225,"sku":"1011116","price":32.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/background-editor_output_ad167d01-4a8e-47e5-ad40-54d8bc47fe36.png?v=1727120122"},{"product_id":"60-hvac-air-conditioning-refrigeration-manifold-charging-hoses","title":"60\" HVAC Air Conditioning Refrigeration Manifold Charging Hoses","description":"\u003cdiv\u003e\n\u003ch1\u003e60\" HVAC Air Conditioning Refrigeration Manifold Charging Hoses\u003c\/h1\u003e \u003cp\u003eEnhance your HVAC toolkit with these durable 60-inch manifold charging hoses from XPart Supply Ltd., ideal for technicians and professionals handling air conditioning and refrigeration systems. Designed for reliable performance in demanding environments, this set ensures safe and efficient refrigerant charging with precision and ease.\u003c\/p\u003e \u003ch2\u003eKey Features and Design\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eHigh-Quality Construction:\u003c\/b\u003e Crafted with standard 1\/4\" fittings for seamless compatibility with most HVAC equipment, these hoses are built to withstand rigorous use in refrigeration and air conditioning applications.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eImpressive Durability:\u003c\/b\u003e Featuring a working pressure of 750 PSI and a burst pressure of 3,000 PSI, they provide the strength needed for safe operations without compromising on flexibility or longevity.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOptimal Length:\u003c\/b\u003e At 60 inches, these hoses offer ample reach for accessing tight spaces while maintaining ease of maneuverability during installations and maintenance tasks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePerformance and Benefits\u003c\/h3\u003e\n\u003cp\u003eThese hoses from XPart Supply Ltd. help streamline HVAC servicing by reducing the risk of leaks and failures, making them essential for accurate refrigerant charging and system diagnostics. They solve common challenges like pressure inconsistencies, enhancing overall efficiency and safety for professionals, while their robust design ensures long-lasting reliability in everyday use. Backed by XPart Supply Ltd.'s reputation for quality tools, this set delivers dependable performance that keeps your operations running smoothly.\u003c\/p\u003e\n\u003cp\u003eSet of 3 (Blue, Yellow, Red) 60\" Standard Hoses - With a working pressure of 750 PSI and a burst pressure of 3,000 PSI and standard 1\/4\" fittings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePart Number TJ40360 replaces 40360\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50282502521121,"sku":"TJ40360","price":54.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/hose-500x500.webp?v=1725981395"},{"product_id":"tools-cl450-hvac-clamp-meter-with-differential-temperature","title":"Tools CL450 HVAC Clamp Meter with Differential Temperature","description":"\u003cp\u003eNeed your appliance repair parts right away we ship fast and offer a free return promise if you don't need it we will take it back no questions asked.\u003c\/p\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50290413306145,"sku":"A039937G","price":249.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/kle-cl450_un_xl.jpg?v=1726141107"},{"product_id":"32292-hvac-multi-bit-screwdriver-15-pc","title":"32292 HVAC Multi-Bit Screwdriver; 15 Pc","description":"Features:\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-bit driver includes 14 different screwdriver tips plus a 1\/4 inch nut driver\u003c\/li\u003e\n\u003cli\u003eInternal storage for screwdriver bits\u003c\/li\u003e\n\u003cli\u003eCushion-Grip Handle for maximum torque and comfort\u003c\/li\u003e\n\u003cli\u003eSpecial Features: Internal Storage Compartment for Bits\u003c\/li\u003e\n\u003cli\u003eNut Driver Sizes: 1\/4''\u003c\/li\u003e\n\u003cli\u003ePhillips Bits: #0, #1, #2, #3\u003c\/li\u003e\n\u003cli\u003eSlotted Bits: 4 mm, 6 mm\u003c\/li\u003e\n\u003cli\u003eSquare Bits: #1, #2\u003c\/li\u003e\n\u003cli\u003eTORX® Bits: #10, #15, #20, #25\u003c\/li\u003e\n\u003cli\u003eOther Bits: Schrader Valve Insertion, Core Removal\u003c\/li\u003e\n\u003cli\u003eShank Length: 4'' (101.6 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Steel\u003c\/li\u003e\n\u003cli\u003eHandle Color: Black\u003c\/li\u003e\n\u003cli\u003eOverall Length: 8-1\/2'' (215.9 mm)\u003c\/li\u003e\n\u003cli\u003eType: HVAC\u003c\/li\u003e\n\u003cli\u003eWeight: 0.50 lb (0.23 kg)\u003c\/li\u003e\n\u003cli\u003eUPC Code 09264432292-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50290684756257,"sku":"A085518G","price":86.7,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/71083194.jpg?v=1726144908"},{"product_id":"hvac-fan-center-relay-transformer-spdt-120v","title":"HVAC Fan Center\/Relay Transformer, SPDT, 120V","description":"\u003cp data-mce-fragment=\"1\"\u003eThis Furnace Fan Center\/Relay Transformer provides reliable and efficient control of your furnace's fan. With a single pole, double throw design, it can handle high-voltage loads up to 120V. Ensure proper functioning of your furnace with this essential component.\u003c\/p\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50292539359521,"sku":"R8285A1048","price":124.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/HOY_R8285A1048-U.webp?v=1726168600"},{"product_id":"hvac-relay-transformer-120vac-enclosed-spdt","title":"HVAC Relay\/Transformer, 120VAC, Enclosed, SPDT","description":"\u003cp data-mce-fragment=\"1\"\u003eThis HVAC relay and transformer has a voltage of 120VAC, and is enclosed for safety. It features a single-pole, double-throw switch for versatile functionality. Perfect for furnace use, this product ensures efficient and safe operation of your HVAC system.\u003c\/p\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":50292539457825,"sku":"8A05A-201","price":199.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/3607_e392cfad-777b-4afa-9a04-0e7e04147024.png?v=1726168602"},{"product_id":"k-s-metal-round-tube-17-32-d-x-12-l-brass-carded","title":"K \u0026 S Round Brass Tube 17\/32 Dia. x 12 L in. for Plumbing\/HVAC\/Automotive","description":"Brought to you by K\u0026amp; S is this round tube, an ideal plumbing pipe for architectural purposes. Made of brass, this piping is solid but lightweight. Each metal piping comes with a size that lets it telescopes into the next corresponding size brass pipe. This round tubing can be soldered, glued, polished, cut, and bent to whatever shape required. The brass tube is for use in plumbing, HVAC, and automotive. This round pipe will be of great aid to scratch builders, modelers, crafts, machine shops, and architectures.\n\u003c!-- split --\u003e\n\u003cul\u003e\n\u003cli\u003eUPC: 614121181403\u003c\/li\u003e\n\u003cli\u003eManufacturer Part No: 8140\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eApplication: Scratch builders, modelers, crafts, machine shops and architectural\u003c\/li\u003e\n\u003cli\u003ePackaging Type: Carded\u003c\/li\u003e\n\u003cli\u003eWall Thickness: 0.014 in.\u003c\/li\u003e\n\u003cli\u003eFinish: Mill\u003c\/li\u003e\n\u003cli\u003eNumber in Package: 1 pk\u003c\/li\u003e\n\u003cli\u003eShape: Round\u003c\/li\u003e\n\u003cli\u003eProduct Type: Brass Tube\u003c\/li\u003e\n\u003cli\u003eLength: 12 in.\u003c\/li\u003e\n\u003cli\u003eDiameter: 17\/32 in.\u003c\/li\u003e\n\u003cli\u003eBrand Name: K\u0026amp;S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-details-list-prop\"\u003e\n    \u003cul\u003e\n      \u003cli\u003eCalifornia residents see \n        \u003cdiv class=\"prop65\"\u003eProp 65 WARNINGS\n        \u003cspan id=\"tooltiptextprop\"\u003e\n           \u003cdiv class=\"proppop\"\u003e\u003c\/div\u003e\n           \u003cdiv class=\"pop65\"\u003e\n            \u003ci class=\"fa fa-exclamation-triangle\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\n          \u003c\/div\u003e\n        \u003c\/span\u003e\n        \u003c\/div\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e","brand":"HILLMAN GROUP RSC","offers":[{"title":"Default Title","offer_id":51539391676705,"sku":"ACE-5024252","price":5.45,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/image_efe805cb-5309-40b9-91d7-735712b693f8.jpg?v=1754102215"},{"product_id":"rotom-run-capacitor-oval-10mfd-370-440v-36-10-370440","title":"Rotom HVAC Motor Run Capacitor 36-10-370440 — Oval, 10MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Motor Run Capacitor 36-10-370440 — Restores 10MFD Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-10-370440\u003c\/span\u003e\n    \u003cspan\u003e10MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03\" × 1.24\" × 3.15\"\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-10-370440\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Motor Not Running Properly? Rotom Motor Run Capacitor 36-10-370440 — Restore 10MFD Run Capacitance Fast\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA failed motor-run capacitor is one of the most common reasons an HVAC fan or compressor motor hums, struggles to reach operating speed, or trips on thermal overload.\u003c\/strong\u003e The run capacitor maintains the phase shift required to keep the motor spinning efficiently under load. When it fails, the motor draws excessive current, overheats, and either refuses to run or shuts off on the overload protector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common failure point in residential and light-commercial HVAC condensing and air-handling units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-10-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 10MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 10MFD — capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates an oval capacitor body approximately 2.03\" wide × 1.24\" deep × 3.15\" high with quick-connect blade terminals\u003c\/li\u003e\n\u003cli\u003e✔ Testing confirms the original capacitor is defective and no related wiring, motor, contactor, or electrical-supply fault remains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we'll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan or compressor motor hums but fails to start or reach operating speed\u003c\/li\u003e\n\u003cli\u003eMotor starts then shuts off on thermal overload shortly after\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or draws higher-than-normal amperage\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is the most likely failed component.\u003c\/p\u003e\n\u003cp\u003e✔ Similar symptoms can also result from damaged wiring, a defective motor, contactor problems, or an incorrect power supply — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-10-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 10-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single-Value Oval HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 10MFD \/ 10 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.03\" W × 1.24\" D × 3.15\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e Quick-connect blade terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 777980032986\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect oval replacements (10MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e\n10DV (Rotom alternate), TOCF10 (Titan Pro \/ Packard), POCF10 (Titan HD \/ Packard), POCF10A (Titan HD HD), 12932 (MARS \/ JARD), 14032 (MARS USA), 12032, 12132, CR10X440 (Supco), LCR10X440 (Supco Linebacker), PPS10440OV (ProParts), PPHD10440OV (ProParts HD), 45100H (DiversiTech), 45100HU (DiversiTech HD), TP10440 (TradePro), TP10440UO (TradePro HD), 325P106H44A30N4X (Packard predecessor)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\n36-10R3744 (Rotom round), 14232, CR10X440R (Supco), LCR10X440R (Supco Linebacker), PPS10440RD (ProParts), PPHD10440RD (ProParts HD), PRCF10 (Packard), PRCF10A (Packard HD), TP10440R (TradePro), TP10440U (TradePro HD) — same 10MFD and 440V electrical rating; round case requires confirmation that mounting strap and cabinet space can accommodate the different shape.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003emotor windings and bearings\u003c\/strong\u003e while the unit is open. A failed run capacitor often causes secondary heat damage to motor windings — replacing only the capacitor on a heat-stressed motor may result in repeat failure within one season. If the motor shows signs of overheating or bearing wear, replace both components at the same service call.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the unit before opening the electrical compartment. HVAC capacitors can retain a hazardous electrical charge after power is disconnected — discharge the capacitor safely using an insulated resistor before handling. Photograph the original wiring before disconnecting. Note terminal labelling, connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC motor application requiring a \u003cstrong\u003esingle-value oval motor-run capacitor rated at exactly 10MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.03\" W × 1.24\" D × 3.15\" H) and quick-connect blade terminals fit the existing mounting and wiring configuration. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eUse a Capacitor Tester — Not a Multimeter:\u003c\/strong\u003e\u003cbr\u003e\nA standard multimeter cannot accurately measure capacitance. Use a dedicated capacitor tester or a multimeter with a capacitance function to confirm the original capacitor is reading outside the ±5% tolerance before condemning it. A capacitor reading within tolerance is not the cause of the motor problem — look further before ordering a replacement.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012403847457,"sku":"36-10-370440","price":14.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Part_Number_36-10-370440.png?v=1784138905"},{"product_id":"rotom-run-capacitor-round-12-5mfd-370-440v-36-12r3744","title":"Rotom HVAC Run Capacitor 36-12R3744 - Round, 12.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.special-order-box{background:#fff3cd;border-left:5px solid #e6a817;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Run Capacitor 36-12R3744 - Fixes Weak Motor Starting \/ Restores 12.5MFD Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-12R3744\u003c\/span\u003e\u003cspan\u003e12.5MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eRound - 1.65in dia x 2.78in H\u003c\/span\u003e\u003cspan\u003eSpecial Order\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-12R3744\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Weakly? Rotom Run Capacitor 36-12R3744 - Restore 12.5MFD Motor Run Capacitance\u003c\/h1\u003e\u003cdiv class=\"special-order-box\"\u003e\n\u003cstrong\u003eSpecial Order Item:\u003c\/strong\u003e Ships in 3-5 business days. Tracking is sent once the order ships. Confirm the complete capacitor specifications before ordering.\u003c\/div\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of weak or unsuccessful motor starting in HVAC systems.\u003c\/strong\u003e The single-value run capacitor provides continuous phase-shift support to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC fan motors and blower motor applications.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-12R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 12.5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 12.5MFD - capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eYour application uses a single-value round run capacitor - not a dual-run capacitor and not a start capacitor\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates a round body approximately 1.65in in diameter and 2.78in in height\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFan or blower motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts weakly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, contactors, relays, motor winding failure, or electrical-supply faults - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-12R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 12.5MFD \/ 12.5 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.65 in (42 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.78 in (70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction, built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order - ships in 3-5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect round replacements (12.5MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003ePRCF12.5 (Packard), PRCF125 (Packard), PRCF12.5A (Titan HD), TRCF12.5 (Titan Pro), CR12.5X440R (Supco), LCR12.5X440R (Supco Linebacker), 12233 (MARS Blue Box), 12733 (JARD\/MARS), 45125R (DiversiTech), USA2208 (AmRad), 14833 (BMI\/MARS USA), 97F5001BX (Genteq\/Capcom) - electrical ratings and round shape match; case dimensions vary. Confirm mounting-strap diameter, available height and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents - oval case (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-12-370440 (Rotom, oval), POCF12.5A (Titan HD, oval), CR12.5X440 (Supco, oval), 12033 (MARS Blue Box, oval), 12933 (JARD\/MARS, oval), 14033 (MARS USA, oval) - electrically compatible; oval case is not a mechanical drop-in for a round mounting bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires a \u003cstrong\u003eround single-value run capacitor rated at exactly 12.5MFD and 370V or 440V\u003c\/strong\u003e, provided the round body (1.65in diameter x 2.78in height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle-Run vs. Dual-Run - Confirm Before Ordering:\u003c\/strong\u003e\u003cbr\u003eA single-value run capacitor like 36-12R3744 has two terminals and supports one motor circuit only. If your original capacitor has three terminals (C, FAN, HERM) and two capacitance values printed on the label, you need a dual-run capacitor instead. Check the label carefully before ordering.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53049432932641,"sku":"36-12R3744","price":14.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_Round_12.5MFD_370_440V.png?v=1784559055"},{"product_id":"rotom-dual-run-capacitor-round-30-4mfd-370-440v-36-304r3744","title":"Rotom HVAC Dual Run Capacitor 36-304R3744 — Round, 30\/4MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-304R3744 — Round, 30\/4MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-304R3744\u003c\/span\u003e\n    \u003cspan\u003e30\/4 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97” × 4.16”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-304R3744 — Restores 30\/4MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-304R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-304R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 30\/4MFD (not 30\/5MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-304R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 30\/4 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.16 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCFD304, PRCFD304A, TRCFD304, CD30+4X440R, 12820, C4304R, 25L753, SFCAP30D4440R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 30\/4MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (1.97” × 4.16”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e30\/4MFD Is Not the Same as 30\/5MFD:\u003c\/strong\u003e\u003cbr\u003eBoth values must match exactly — the FAN circuit value (4MFD) is just as critical as the compressor value (30MFD). Installing a 30\/5MFD capacitor where 30\/4MFD is required will overstress the fan motor. Note that 25L753 replaces the older 25L753BX — either is acceptable if sourced from Genteq\/Capcom. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047486480673,"sku":"36-304R3744","price":27.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-304R3744_Round_30_4MFD_370_440V.png?v=1784517175"},{"product_id":"rotom-run-capacitor-round-30mfd-370-440v-36-30r3744","title":"Rotom HVAC Run Capacitor 36-30R3744 — Round, 30MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-30R3744 — Round, 30MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-30R3744\u003c\/span\u003e\n    \u003cspan\u003e30 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.00” × 3.94”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eGTIN 777980034263\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor or Compressor Not Running? Run Capacitor 36-30R3744 — Restores 30MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor or compressor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors and compressors, the run capacitor provides continuous phase-shift support while the equipment is operating. When it fails, the motor or compressor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-30R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 30MFD PSC motor and compressor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-30R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor or compressor circuit is confirmed to require a single 30MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor or compressor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor or compressor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor or compressor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor or compressor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor or compressor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-30R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980034263\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 30 µF (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.00 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.94 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCF30A, TRCF30, CR30X440R, 12241, 12741, 14241, USA2213, SFCAP30440R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor or compressor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 30MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.00” × 3.94”) fit the mounting strap and cabinet clearance before ordering. Note: some distributor listings incorrectly state 35µF for this part — the verified rating is 30µF. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eWatch for Distributor Data Errors on 30MFD Parts:\u003c\/strong\u003e\u003cbr\u003eAt least one major distributor incorrectly lists this capacitor as 35µF in its specifications. The verified Rotom catalogue rating is 30MFD. Always cross-check the MFD value against the label on your original capacitor — not just the distributor’s product page — before ordering a replacement.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047455482145,"sku":"36-30R3744","price":20.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-30R3744_Round_30MFD_370_440V.png?v=1784516672"},{"product_id":"rotom-run-capacitor-oval-3mfd-370-440v-36-3-370440","title":"Rotom HVAC Run Capacitor 36-3-370440 — Oval, 3MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-3-370440 — Oval, 3MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-3-370440\u003c\/span\u003e\n    \u003cspan\u003e3 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03” × 1.24” × 1.58”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running Properly? Run Capacitor 36-3-370440 — Restores 3MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and auxiliary motor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-3-370440\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 3MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-3-370440\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 3MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-3-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 3 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.58 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval Equivalents:\u003c\/strong\u003e PPS3440OV, POCF3, POCF3A, TOCF3, 45030H, TP3440, CR3X440, 12027, 12927, 27L1022BX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, available height and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 3MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the oval shape and dimensions (2.03” × 1.24” × 1.58”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eOval vs. Round vs. Square — Shape Matters for Fit:\u003c\/strong\u003e\u003cbr\u003eThe 36-3-370440 is an oval capacitor. Round equivalents like PRCF3 and square equivalents like 36-3S440 carry the same 3MFD rating but require different mounting straps. If your original bracket is oval, order an oval replacement. Photograph the original capacitor and bracket before removing it to confirm the correct case style.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047451746593,"sku":"36-3-370440","price":11.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-3-370440_Oval_3MFD_370_440V.png?v=1784516616"},{"product_id":"rotom-dual-run-capacitor-round-35-4mfd-370-440v-36-354r3744","title":"Rotom HVAC Dual Run Capacitor 36-354R3744 — Round, 35\/4MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-354R3744 — Round, 35\/4MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-354R3744\u003c\/span\u003e\n    \u003cspan\u003e35\/4 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97” × 4.33”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-354R3744 — Restores 35\/4MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-354R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-354R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 35\/4MFD (not 35\/5MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-354R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35\/4 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCFD354, PRCFD354A, TRCFD354, CD35+4X440R, 12070, 12870, SFCAP35D4440R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 35\/4MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (1.97” × 4.33”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e35\/4MFD Is Not the Same as 35\/5MFD:\u003c\/strong\u003e\u003cbr\u003eMarketplace listings frequently conflate 35\/4MFD and 35\/5MFD capacitors. Both values must match exactly — the FAN circuit value (4MFD) is just as critical as the compressor value (35MFD). Installing a 35\/5MFD capacitor where 35\/4MFD is required will overstress the fan motor. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047438803233,"sku":"36-354R3744","price":30.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-354R3744_Round_35_4MFD_370_440V.png?v=1784515587"},{"product_id":"rotom-dual-run-capacitor-oval-35-5mfd-370-440v-36-35-5-3744","title":"Rotom HVAC Dual Run Capacitor 36-35-5-3744 — Oval, 35\/5MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-35-5-3744 — Restores 35\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-35-5-3744\u003c\/span\u003e\n    \u003cspan\u003e35\/5MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.80\" × 1.77\" × 3.94\"\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-35-5-3744\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-35-5-3744 — Restore 35\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body — the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-35-5-3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 35\/5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original capacitor’s capacitance, voltage, terminal arrangement and physical dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 35\/5MFD — both values must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Terminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates an oval body approximately 2.80\" wide × 1.77\" deep × 3.94\" high\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms can also result from wiring, a contactor, fan motor, compressor, or electrical-supply problems — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-35-5-3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 35\/5DV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35\/5MFD \/ 35\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.80\" W × 1.77\" D × 3.94\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect oval replacements (35\/5MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e\n35\/5DV (Rotom alternate), TOCFD355 (Titan Pro), POCFD355 (Packard), POCFD355A (Titan HD), 4JJ0535 (DiversiTech), CD35+5X440 (Supco), LCD35+5X440 (Supco Linebacker), 12185 (MARS), 12885 (JARD), P291-3554S (Totaline), 97F9842 (Genteq \/ CAPCOM), C4355L (Genteq \/ CAPCOM)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\n36-355R3744 (Rotom round), 35\/5DVR (Rotom alternate round), TRCFD355 (Titan Pro), PRCFD355 (Packard), PRCFD355A (Titan HD), 4JR0535 (DiversiTech), 4JR0535U (DiversiTech HD), CD35+5X440R (Supco), LCD35+5X440R (Supco Linebacker), PPS535440RD (ProParts), PPHD535440RD (ProParts HD), TP355440R (TradePro), TP355440U (TradePro HD), USA2227 (AmRad), 12283 (MARS), 12783 (JARD), 14283 (MARS current), P291-3554RS (Totaline) — same 35\/5MFD and 440V electrical rating; round case requires confirmation that mounting strap and cabinet space can accommodate the different shape.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units — addressing both at the same service call avoids a repeat visit.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitors can retain a hazardous electrical charge after power is disconnected — discharge the capacitor safely using an insulated resistor before handling. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires an \u003cstrong\u003eoval dual-run capacitor rated at exactly 35\/5MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the oval body (2.80\" W × 1.77\" D × 3.94\" H) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest With a Capacitor Meter — Both Values:\u003c\/strong\u003e\u003cbr\u003e\nA dual-run capacitor has two independent capacitance values — 35MFD for the compressor circuit and 5MFD for the fan circuit. Test both values separately using a dedicated capacitor tester. A capacitor that reads within ±5% tolerance on both values is not the cause of the problem. If only one value is out of tolerance, the entire dual-run capacitor must still be replaced — both circuits share the same component body.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53024182436129,"sku":"36-35-5-3744","price":37.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_HVAC_Capacitor_36-35-5-3744_Replace_Failed_35_5_MFD_370_440V_Oval_Capacitors.png?v=1783975918"},{"product_id":"rotom-dual-run-capacitor-round-35-5mfd-370-440v-36-355r3744","title":"Rotom HVAC Dual Run Capacitor 36-35-5-3744 — Round, 35\/5MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Dual Run Capacitor \u003cspan class=\"token\"\u003e36\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e35\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e5\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e3744\u003c\/span\u003e — Round, 35\/5MFD, 370\/440V\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-355R3744\u003c\/span\u003e \u003cspan\u003e35\/5MFD\u003c\/span\u003e \u003cspan\u003e370\/440 VAC\u003c\/span\u003e \u003cspan\u003eRound — 2.17\" dia × 4.33\" H\u003c\/span\u003e \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e \u003cspan\u003e🇺🇸 U.S. Part#: 36-355R3744\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor \u003cspan class=\"token\"\u003e36\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e35\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e5\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e3744\u003c\/span\u003e — Restore 35\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one case — the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart \u003cspan class=\"token\"\u003e36\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e35\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e5\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e3744\u003c\/span\u003e\u003c\/strong\u003e is the Rotom specification-based replacement rated at 35\/5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original capacitor’s 35\/5MFD rating, voltage, terminals and physical dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 35\/5MFD — both values must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Terminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates a round body approximately 2.17\" in diameter and 4.33\" in height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms can also result from wiring, a contactor, motor, compressor, or electrical-supply problems — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-355R3744, \u003cspan class=\"token\"\u003e36\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e35\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e5\u003c\/span\u003e\u003cspan class=\"token\"\u003e-\u003c\/span\u003e\u003cspan class=\"token\"\u003e3744\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 35\/5DVR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35\/5MFD \/ 35\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.17 in \/ 55 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in \/ 110 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect round replacements (35\/5MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003e35\/5DVR (Rotom alternate), TRCFD355 (Titan Pro \/ Packard), PRCFD355 (Packard), PRCFD355A (Titan HD), PPS535440RD (ProParts), PPHD535440RD (ProParts HD), 4JR0535 (DiversiTech), 4JR0535U (DiversiTech HD), TP355440R (TradePro), TP355440U (TradePro HD), CD35+5X440R (Supco), LCD35+5X440R (Supco Linebacker), 12283 (MARS\/JARD), 12783 (JARD), 14283 (MARS USA), USA2227 (AmRad), CPDRR1-355 (Bluefin), P291-3554RS (Totaline\/Carrier), 97F9848 (Genteq\/CAPCOM), C4355R (Genteq\/CAPCOM)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — oval shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-35-5-3744 (Rotom oval), TOCFD355 (Titan Pro), POCFD355 (Packard), POCFD355A (Titan HD), 4JJ0535 (DiversiTech), CD35+5X440 (Supco), LCD35+5X440 (Supco Linebacker), 12185 (MARS), 12885 (JARD), P291-3554S (Totaline), 97F9842 (Genteq\/CAPCOM), C4355L (Genteq\/CAPCOM) — same 35\/5MFD and 440V electrical rating; oval case requires confirmation that mounting strap and cabinet space can accommodate the different shape.\u003c\/p\u003e\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units — addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 35\/5MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (2.17\" diameter × 4.33\" height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values — 35MFD and 5MFD Separately:\u003c\/strong\u003e\u003cbr\u003eA dual-run capacitor has two independent capacitance values — 35MFD for the compressor circuit and 5MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the ±5% tolerance. If either value reads out of tolerance, replace the entire capacitor — both circuits share the same component body and cannot be serviced independently.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53023652839713,"sku":"36-35-5-3744","price":31.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/ChatGPTImageJul13_2026_02_35_08PM.png?v=1783967734"},{"product_id":"rotom-dual-run-capacitor-round-35-7-5mfd-370-440v-36-357r3744","title":"Rotom HVAC Dual Run Capacitor 36-357R3744 — Round, 35\/7.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-357R3744 — Round, 35\/7.5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-357R3744\u003c\/span\u003e\n    \u003cspan\u003e35\/7.5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.17” × 4.33”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-357R3744 — Fixes Weak Compressor or Fan Starting \/ Restores 35\/7.5MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-357R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-357R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 35\/7.5MFD (not 35\/5MFD, 35\/10MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-357R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35\/7.5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.17 in (55 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in (110 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCFD3575, PRCFD3575A, TRCFD3575, 4JR7535, CD35+7.5X440R, 12284, 12784, 14284, USA2291, C43575R, 97F9881, 97F9494\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 35\/7.5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.17” × 4.33”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e35\/7.5MFD — Verify the Fan Value Before Ordering:\u003c\/strong\u003e\u003cbr\u003eThe 7.5MFD fan section is less common than 5MFD or 10MFD. Both values must match exactly — a 35\/5MFD or 35\/10MFD capacitor is not a substitute. Note that UPC 777980034492 appears in some distributor records for this part but is also associated with a different Rotom part number (36-305R3744) in other records — do not rely on barcode alone to confirm the correct part. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048732287265,"sku":"36-357R3744","price":32.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-357R3744_Round_35_7.5MFD_370_440V.png?v=1784552529"},{"product_id":"rotom-dual-run-capacitor-round-40-10mfd-370-440v-36-4010r3744","title":"Rotom HVAC Dual Run Capacitor 36-4010R3744 — Round, 40\/10MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-4010R3744 — Round, 40\/10MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-4010R3744\u003c\/span\u003e\n    \u003cspan\u003e40\/10 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 4.72” (60 × 120 mm)\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-4010R3744 — Fixes Weak Compressor or Fan Starting \/ Restores 40\/10MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-4010R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-4010R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 40\/10MFD (not 40\/7.5MFD, 40\/5MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-4010R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 40\/10 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in (60 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.72 in (120 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS1040440RD, PRCFD4010, PRCFD4010A, TRCFD4010, TP3010440R, CD40+10X440R, 12088, 12798, 14088, USA2232A, C44010R, 328P4010H44N37A5Z, 43-25133-23, 43-TL40104-R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 40\/10MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 4.72”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e40\/10MFD — Verify the Fan Value Before Ordering:\u003c\/strong\u003e\u003cbr\u003eThe 10MFD fan section is less common than 5MFD or 7.5MFD. Both values must match exactly — a 40\/7.5MFD or 40\/5MFD capacitor is not a substitute. Note that 12798 (JARD\/MARS) is the verified replacement for the older 12088 — either is acceptable if sourced from MARS. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048742314273,"sku":"36-4010R3744","price":39.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-4010R3744_Round_40_10MFD_370_440V.png?v=1784553020"},{"product_id":"rotom-run-capacitor-oval-40mfd-370-440v-36-40-370440","title":"Rotom HVAC Motor Run Capacitor 36-40-370440 — Oval, 40MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Motor Run Capacitor 36-40-370440 — Restores 40MFD Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-40-370440\u003c\/span\u003e\n    \u003cspan\u003e40MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.80\" × 1.77\" × 3.55\"\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-40-370440\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Motor Not Running Properly? Rotom Motor Run Capacitor 36-40-370440 — Restore 40MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of HVAC fan or compressor motor starting and running problems.\u003c\/strong\u003e The run capacitor maintains the phase shift required to keep the motor spinning efficiently under load. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing and air-handling units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-40-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 40MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original capacitor’s capacitance, voltage, and physical dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 40MFD — capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Configuration is a single-value run capacitor (not a dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates an oval body approximately 2.80\" wide × 1.77\" deep × 3.55\" high\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan or compressor motor hums but fails to start or reach operating speed\u003c\/li\u003e\n\u003cli\u003eMotor starts then shuts off on thermal overload shortly after\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or draws higher-than-normal amperage\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms can also result from wiring, a contactor, motor, or electrical-supply fault — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-40-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 40DV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single-Value Oval HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 40MFD \/ 40 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.80\" W × 1.77\" D × 3.55\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect oval replacements (40MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e\n40DV (Rotom alternate), TOCF40 (Titan Pro \/ Packard), POCF40 (Packard), POCF40A (Titan HD), PPS40440OV (ProParts), 45400H (DiversiTech), TP40440 (TradePro), CR40X440 (Supco), LCR40X440 (Supco Linebacker), 12045 (MARS Blue Box), 12945 (JARD \/ MARS), 14045 (MARS USA), P291-4004 (Totaline)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\n36-40R3744 (Rotom round), TRCF40 (Titan Pro), PRCF40 (Packard), PPS40440RD (ProParts), 45400R (DiversiTech), TP40440R (TradePro), CR40X440R (Supco), LCR40X440R (Supco Linebacker), 14245 (MARS USA), P291-4004R (Totaline) — same 40MFD and 440V electrical rating; round case requires confirmation that mounting strap and cabinet space can accommodate the different shape.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. If the motor shows signs of overheating or bearing wear, address it at the same service call to avoid a repeat visit.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC motor application requiring a \u003cstrong\u003esingle-value oval motor-run capacitor rated at exactly 40MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.80\" W × 1.77\" D × 3.55\" H) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eUse a Capacitor Tester — Not a Multimeter:\u003c\/strong\u003e\u003cbr\u003e\nA standard multimeter cannot accurately measure capacitance. Use a dedicated capacitor tester or a multimeter with a capacitance function to confirm the original capacitor reads outside the ±5% tolerance before condemning it. A capacitor reading within tolerance is not the cause of the motor problem — look further before ordering a replacement.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53024199016737,"sku":"36-40-370440","price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_HVAC_Capacitor_36-40-370440_Replace_Failed_40_MFD_370_440V_Oval_Capacitors.png?v=1783976409"},{"product_id":"rotom-dual-run-capacitor-round-40-7-5mfd-370-440v-36-407r3744","title":"Rotom HVAC Dual Run Capacitor 36-407R3744 — Round, 40\/7.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIAL ORDER — OEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-407R3744 — Round, 40\/7.5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-407R3744\u003c\/span\u003e\n    \u003cspan\u003e40\/7.5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 4.72” (60 × 120 mm)\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eShips 3–5 Business Days\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-407R3744 — Fixes Weak Compressor or Fan Starting \/ Restores 40\/7.5MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-407R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-407R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📦 Special Order This Part —\u003c\/strong\u003e Ships in 3–5 business days. Tracking sent once your order ships.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 40\/7.5MFD (not 40\/5MFD, 40\/10MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-407R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 40\/7.5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in (60 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.72 in (120 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order — Ships in 3–5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS7540440RD, PRCFD4075, PRCFD4075A, TRCFD4075, 4JR7540, TP4075440R, CD40+7.5X440R, LCR40+7.5X440R, 12287, 12787, 14287, USA2232, CD4075440, C44075R, 97F9882, 97F9882BX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 40\/7.5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 4.72”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e40\/7.5MFD — Verify the Fan Value Before Ordering:\u003c\/strong\u003e\u003cbr\u003eThe 7.5MFD fan section is less common than 5MFD or 10MFD. Both values must match exactly — a 40\/5MFD or 40\/10MFD capacitor is not a substitute. Note that UPC 777980034522 appears in some distributor records but is also associated with Rotom 36-405R3744 in other records — do not rely on barcode alone to confirm the correct part. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012407255329,"sku":"36-407R3744","price":34.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-407R3744_Round_40_7.5MFD_370_440V.png?v=1784554057"},{"product_id":"rotom-run-capacitor-round-40mfd-370-440v-36-40r3744","title":"Rotom HVAC Run Capacitor 36-40R3744 — Fixes Weak Motor Starting","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-40R3744 — Round, 40MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-40R3744\u003c\/span\u003e\n    \u003cspan\u003e40 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.00” × 4.33” (50 × 110 mm)\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Starting? Run Capacitor 36-40R3744 — Fixes Weak Motor Starting \/ Restores 40MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-40R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 40MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-40R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 40MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start, humming, or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-40R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 40 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.00 in (50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in (110 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS40440RD, PRCF40, TRCF40, 45400R, TP40440R, CR40X440R, LCR40X440R, P291-4004R, 14245\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 40MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.00” × 4.33”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eThe 36-40R3744 is a single run capacitor with one capacitance value (40MFD) and two terminals. A dual run capacitor has two values (e.g., 40\/5MFD or 40\/7.5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor circuit. The oval counterpart to this part is 36-40-370440 — electrically identical but requires a different mounting strap. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048747884833,"sku":"36-40R3744","price":26.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-40R3744_Round_40MFD_370_440V.png?v=1784554266"},{"product_id":"rotom-run-capacitor-oval-45mfd-370-440v-36-45-370440","title":"Rotom HVAC Motor Run Capacitor 36-45-370440 — Oval, 45MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Motor Run Capacitor 36-45-370440 — Restores 45MFD Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-45-370440\u003c\/span\u003e\n    \u003cspan\u003e45MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.80\" × 1.77\" × 4.33\"\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-45-370440\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Motor Not Running Properly? Rotom Motor Run Capacitor 36-45-370440 — Restore 45MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective capacitor is one possible cause of HVAC motor starting and running problems.\u003c\/strong\u003e The run capacitor maintains the phase shift required to keep the motor spinning efficiently under load. When it fails, the motor may hum, struggle to reach operating speed, operate intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing and air-handling units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-45-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 45MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original capacitor’s 45MFD rating, voltage, terminal configuration and dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 45MFD — capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Configuration is a single-value run capacitor (not a dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates an oval body approximately 2.80\" wide × 1.77\" deep × 4.33\" high\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan or compressor motor hums but fails to start or reach operating speed\u003c\/li\u003e\n\u003cli\u003eMotor starts then shuts off on thermal overload shortly after\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or draws higher-than-normal amperage\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, contactor, motor, compressor, or power-supply faults — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-45-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 45DV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single-Value Oval HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 45MFD \/ 45 µF (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.80\" W × 1.77\" D × 4.33\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect oval replacements (45MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e\n45DV (Rotom alternate), TOCF45 (Titan Pro \/ Packard), POCF45 (Packard), POCF45A (Titan HD), PPS45440OV (ProParts), 45450H (DiversiTech), 45450HU (DiversiTech HD), TP45440 (TradePro), CR45X440 (Supco), LCR45X440 (Supco Linebacker), 12048 (MARS), 12948 (JARD \/ MARS), 14048 (MARS USA), P291-4504 (Totaline \/ Carrier)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\n36-45R3744 is electrically equivalent but uses a round case — a different mounting bracket may be required. Also: TRCF45 (Titan Pro \/ Packard), PRCF45 (Packard), PRCF45A (Titan HD), PPS45440RD (ProParts), 45450R (DiversiTech), TP45440R (TradePro), CR45X440R (Supco), LCR45X440R (Supco Linebacker), 12248 (MARS), 12748 (JARD \/ MARS), 14248 (MARS USA), USA2216 (AmRad), P291-4504RS (Totaline \/ Carrier), 97F9645BX (Genteq \/ CAPCOM) — same 45MFD and 440V electrical rating; confirm mounting strap and cabinet clearance before ordering.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. If the motor shows signs of overheating or bearing wear, address it at the same service call to avoid a repeat visit.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the unit before opening the electrical compartment. Diagnosis and replacement should be completed by a qualified HVAC technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC motor application requiring a \u003cstrong\u003esingle-value oval motor-run capacitor rated at exactly 45MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.80\" W × 1.77\" D × 4.33\" H) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eUse a Capacitor Tester — Not a Multimeter:\u003c\/strong\u003e\u003cbr\u003e\nA standard multimeter cannot accurately measure capacitance. Use a dedicated capacitor tester or a multimeter with a capacitance function to confirm the original capacitor reads outside the ±5% tolerance before condemning it. A capacitor reading within tolerance is not the cause of the motor problem — look further before ordering a replacement.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53023958237473,"sku":"36-45-370440","price":36.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_HVAC_Capacitor_36-45-370440_Replace_Failed_45_MFD_370_440V_Oval_Capacitors.png?v=1783971099"},{"product_id":"rotom-dual-run-capacitor-round-45-7-5mfd-370-440v-36-457r3744","title":"Rotom HVAC Dual Run Capacitor 36-457R3744 — Fixes Weak Compressor or Fan Starting","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-457R3744 — Round, 45\/7.5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-457R3744\u003c\/span\u003e\n    \u003cspan\u003e45\/7.5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 4.71” (60 × 120 mm)\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-457R3744 — Fixes Weak Compressor or Fan Starting \/ Restores 45\/7.5MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-457R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-457R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 45\/7.5MFD (not 45\/5MFD, 45\/10MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-457R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 45\/7.5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in (60 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.71 in (120 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS7545440RD, PRCFD4575A, TRCFD4575, 4JR7545, TP4575440R, CD45+7.5X440R, LCD45+7.5X440R, 14289, USA2233\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 45\/7.5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 4.71”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e45\/7.5MFD — Verify the Fan Value Before Ordering:\u003c\/strong\u003e\u003cbr\u003eThe 7.5MFD fan section is less common than 5MFD or 10MFD. Both values must match exactly — a 45\/5MFD or 45\/10MFD capacitor is not a substitute. Note that PRCFD4575 (Packard) has been discontinued and replaced in the Titan line by PRCFD4575A — either is acceptable if sourced from the same manufacturer family. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048792154401,"sku":"36-457R3744","price":35.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-457R3744_Round_45_7.5MFD_370_440V.png?v=1784555794"},{"product_id":"rotom-run-capacitor-round-50mfd-370-440v-36-50r3744","title":"Rotom HVAC Run Capacitor 36-50R3744 — Round, 50MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-50R3744 — Round, 50MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-50R3744\u003c\/span\u003e\n    \u003cspan\u003e50 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.00” × 4.33” (50 × 110 mm)\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eGTIN 777980034300\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Starting? Run Capacitor 36-50R3744 — Fixes Weak Motor Starting \/ Restores 50MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-50R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 50MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-50R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 50MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start, humming, or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-50R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980034300\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 50 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.00 in (50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in (110 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS50440RD, PRCF50, PRCF50A, TRCF50, 45500R, TP50440R, CR50X440R, LCR50X440R, 12251, 12751, 14251, USA2217, C450R, 97F5211, 97F5211BX, 43-TL50004-R, 43-25136-34\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 50MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.00” × 4.33”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eThe 36-50R3744 is a single run capacitor with one capacitance value (50MFD) and two terminals. A dual run capacitor has two values (e.g., 50\/5MFD or 50\/7.5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor circuit. The oval counterpart to this part is 36-50-370440 — electrically identical but requires a different mounting strap. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048956453153,"sku":"36-50R3744","price":37.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-50R3744_Round_50MFD_370_440V.png?v=1784557141"},{"product_id":"rotom-run-capacitor-round-55mfd-370-440v-36-55r3744","title":"Rotom HVAC Run Capacitor 36-55R3744 — Round, 55MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIAL ORDER — OEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-55R3744 — Round, 55MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-55R3744\u003c\/span\u003e\n    \u003cspan\u003e55 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.17” × 5.12” (55 × 130 mm)\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eShips 3–5 Business Days\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Starting? Run Capacitor 36-55R3744 — Fixes Weak Motor Starting \/ Restores 55MFD Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-55R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 55MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-55R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📦 Special Order This Part —\u003c\/strong\u003e Ships in 3–5 business days. Tracking sent once your order ships.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 55MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start, humming, or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-55R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 55 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.17 in (55 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.12 in (130 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order — Ships in 3–5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS55440RD, PRCF55, PRCF55A, TRCF55, CR55X440R, 12752, 14252, USA2218, CAP-55\/440R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 55MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.17” × 5.12”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e55MFD Is a Less Common Rating — Verify Before Ordering:\u003c\/strong\u003e\u003cbr\u003e55MFD is less common than 45MFD or 60MFD. Capacitance must match exactly — a 50MFD or 60MFD capacitor is not a substitute. Note that two conflicting UPC candidates (777980034331 and 777980034317) appear in distributor records for this part — do not rely on barcode alone to confirm the correct item. The oval counterpart is 36-55-370440 — electrically identical but requires a different mounting strap. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048965759265,"sku":"36-55R3744","price":38.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-55R3744_Round_55MFD_370_440V.png?v=1784557964"},{"product_id":"rotom-run-capacitor-oval-5mfd-370v-36-5j370","title":"Rotom HVAC Run Capacitor 36-5J370 - Oval, 5MFD, 370V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Run Capacitor 36-5J370 - Fixes Weak Motor Starting \/ Restores 5MFD Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-5J370\u003c\/span\u003e\u003cspan\u003e5MFD\u003c\/span\u003e\u003cspan\u003e370 VAC\u003c\/span\u003e\u003cspan\u003eOval - 2.03in W x 1.24in D x 1.58in H\u003c\/span\u003e\u003cspan\u003eIn Stock\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-5J370\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Weakly? Rotom Run Capacitor 36-5J370 - Restore 5MFD Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of weak or unsuccessful motor starting in HVAC systems.\u003c\/strong\u003e The single-value run capacitor provides continuous phase-shift support to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC fan motors and blower motor applications.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-5J370\u003c\/strong\u003e is the Rotom specification-based replacement rated at 5MFD and 370 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 5MFD - capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V - a 370\/440V or 440V replacement may also be used; a 370V-only capacitor must not replace a 440V application\u003c\/li\u003e\n\u003cli\u003eYour application uses a single-value oval run capacitor - not a dual-run capacitor and not a start capacitor\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates an oval body approximately 2.03in wide, 1.24in deep and 1.58in high\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFan or blower motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts weakly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, relays, contactors, motor winding failure, or electrical-supply faults - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-5J370\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 5MFD \/ 5 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in (51.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in (31.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.58 in (40 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction, built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980008127\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect 370V oval replacements (5MFD, 370V, oval):\u003c\/strong\u003e\u003cbr\u003e12005 (MARS Blue Box), 12905 (JARD\/MARS), 14005 (MARS USA), POC5 (Packard), POC5A (Titan HD), TOC5 (Titan Pro), CR5X370 (Supco), C305L (Genteq\/Capcom), 27L570 (Genteq\/Capcom), 27L570BX (Genteq\/Capcom), 97F5705 (Genteq\/Capcom) - electrical rating and oval shape match; case dimensions vary. Confirm mounting strap, available height and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHigher-voltage oval replacements (5MFD, 370\/440V or 440V, oval - valid upgrade):\u003c\/strong\u003e\u003cbr\u003e36-5-370440 (Rotom), POCF5A (Titan HD), TOCF5 (Titan Pro), CR5X440 (Supco), 45050H (DiversiTech), 12029 (MARS Blue Box), 12929 (JARD\/MARS), 14029 (MARS USA), P291-0504 (Totaline\/Carrier) - 5MFD capacitance matches exactly; higher voltage rating is a valid replacement for a 370V application. Confirm case dimensions and mounting fit before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents - round case (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-5R3744 (Rotom, round), PRCF5A (Titan HD, round), TRCF5 (Titan Pro, round), CR5X440R (Supco, round, 440V), 14105 (MARS USA, round, 440V), PRC5 (Packard, round, 370V), TRC5 (Titan Pro, round, 370V), CR5X370R (Supco, round, 370V), 14095 (MARS USA, round, 370V), C305R (Genteq\/Capcom, round) - electrically compatible; round case is not a mechanical drop-in for an oval mounting bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires an \u003cstrong\u003eoval single-value run capacitor rated at exactly 5MFD and 370V\u003c\/strong\u003e, provided the oval body (2.03in wide x 1.24in deep x 1.58in high) fits the existing mounting bracket. A 370\/440V or 440V capacitor rated at exactly 5MFD may also be used. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e370V vs. 370\/440V - Either Works Here:\u003c\/strong\u003e\u003cbr\u003eThis capacitor is rated 370V. If a 370\/440V or 440V capacitor at exactly 5MFD is available and fits the mounting space, it is a valid replacement - the higher voltage rating is a safety margin, not an indication that more voltage will be applied to the motor. Do not install a 370V-only capacitor in an application that requires 440V.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012408697121,"sku":"36-5J370","price":12.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-5J370_Oval_5MFD_370V.png?v=1784558845"},{"product_id":"rotom-run-capacitor-round-60mfd-370-440v-36-60r3744","title":"Rotom HVAC Motor Run Capacitor 36-60R3744 — Round, 60MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Motor Run Capacitor 36-60R3744 — Round, 60MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-60R3744\u003c\/span\u003e\n    \u003cspan\u003e60MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.17\" dia × 5.12\" H\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-60R3744\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Motor Not Running Properly? Rotom Motor Run Capacitor 36-60R3744 — Restore 60MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective capacitor is one possible cause of motor starting or running problems in HVAC systems.\u003c\/strong\u003e The run capacitor maintains the phase shift required to keep the motor spinning efficiently under load. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing and air-handling units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-60R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 60MFD and 370\/440 VAC that may restore motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original 60MFD rating, voltage, shape and physical dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 60MFD — capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Configuration is a single-value run capacitor (not a dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates a round body approximately 2.17\" in diameter and 5.12\" in height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan or compressor motor hums but fails to start or reach operating speed\u003c\/li\u003e\n\u003cli\u003eMotor starts then shuts off on thermal overload shortly after\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or draws higher-than-normal amperage\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms can also result from wiring, a contactor, motor, compressor, or electrical-supply problems — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-60R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 60DVR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single-Value Round HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 60MFD \/ 60 µF (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.17 in \/ 55 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.12 in \/ 130 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect round replacements (60MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003e\n60DVR (Rotom alternate), TRCF60 (Titan Pro \/ Packard), PRCF60 (Packard), PRCF60A (Titan HD), PPS60440RD (ProParts), PPHD60440RD (ProParts HD), 45600R (DiversiTech), TP60440R (TradePro), TP60440U (TradePro HD), CR60X440R (Supco), LCR60X440R (Supco Linebacker), 12254 (MARS), 12754 (JARD), 14254 (MARS USA), USA2219 (AmRad)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — oval shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\nAn oval 60MFD capacitor may be electrically equivalent, but mounting and enclosure clearance must be confirmed. 36-60-370440 (Rotom oval), TOCF60 (Titan Pro), POCF60 (Packard), CR60X440 (Supco), LCR60X440 (Supco Linebacker), 12051 (MARS), 12951 (JARD), 14051 (MARS USA), 45600H (DiversiTech) — same 60MFD and 440V electrical rating; oval case requires confirmation that a different mounting strap and enclosure clearance can be accommodated.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. If the motor shows signs of overheating or bearing wear, address it at the same service call to avoid a repeat visit.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the unit before opening the electrical compartment. Diagnosis and replacement should be completed by a qualified HVAC technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC motor application requiring a \u003cstrong\u003esingle-value round motor-run capacitor rated at exactly 60MFD and 370V or 440V\u003c\/strong\u003e, provided the round body (2.17\" diameter × 5.12\" height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eUse a Capacitor Tester — Not a Multimeter:\u003c\/strong\u003e\u003cbr\u003e\nA standard multimeter cannot accurately measure capacitance. Use a dedicated capacitor tester or a multimeter with a capacitance function to confirm the original capacitor reads outside the ±5% tolerance before condemning it. A capacitor reading within tolerance is not the cause of the motor problem — look further before ordering a replacement.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012408795425,"sku":"36-60R3744","price":41.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_HVAC_Capacitor_36-60R3744_Replace_Failed_60_MFD_370_440V_Round_Capacitors.png?v=1783969842"},{"product_id":"rotom-run-capacitor-round-70mfd-370-440v-36-70r3744","title":"Rotom HVAC Run Capacitor 36-70R3744 — Round, 70MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-70R3744 — Round, 70MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-70R3744\u003c\/span\u003e\n    \u003cspan\u003e70 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 4.72”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor or Compressor Not Running? Run Capacitor 36-70R3744 — Restores 70MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor or compressor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors and compressors, the run capacitor provides continuous phase-shift support while the equipment is operating. When it fails, the motor or compressor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in high-capacity condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-70R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 70MFD PSC motor and compressor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-70R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor or compressor circuit is confirmed to require a single 70MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor or compressor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor or compressor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor or compressor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor or compressor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor or compressor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-70R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 70 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.72 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Heavy-duty compact construction; built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e CR70X440R, PRCF70, PRCF70A, TRCF70, 12758, 14258, USA2228\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor or compressor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 70MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 4.72”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eThe 36-70R3744 is a single run capacitor with one capacitance value (70MFD) and two terminals. A dual run capacitor has two values (e.g., 70\/5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor or compressor circuit. Always verify the original capacitor type and rating before ordering. Note: part number 12922 is an 85\/10MFD dual-run capacitor and is not a valid substitute for this 70MFD single run unit.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047430644001,"sku":"36-70R3744","price":49.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-70R3744_Round_70MFD_370_440V.png?v=1784515396"},{"product_id":"rotom-run-capacitor-oval-7-5mfd-370v-36-7-5j370","title":"Rotom HVAC Run Capacitor 36-7.5J370 — Oval, 7.5MFD, 370V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-7.5J370 — Oval, 7.5MFD, 370V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-7.5J370\u003c\/span\u003e\n    \u003cspan\u003e7.5 µF\u003c\/span\u003e\n    \u003cspan\u003e370 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03” × 1.24” × 2.36”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running Properly? Run Capacitor 36-7.5J370 — Restores 7.5MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and auxiliary motor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-7.5J370\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 7.5MFD, 370V PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-7.5J370\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 7.5MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated 370V (not 440V)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-7.5J370\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 7.5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval 370V Equivalents:\u003c\/strong\u003e 12007, 12907, POC7.5A, CR7.5X370\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Consider Upgrading to 370\/440V:\u003c\/strong\u003e\u003cbr\u003eA 440V or 370\/440V oval run capacitor (such as 36-7-370440 or POCF7.5) can replace this 370V unit when capacitance remains exactly 7.5MFD and dimensions are compatible. The higher voltage rating provides additional headroom and is the more common stocked option at HVAC supply houses.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, available height and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 7.5MFD. A replacement rated at 370V, 440V or 370\/440V may be used when its dimensions, terminals and mounting arrangement are compatible. Confirm the oval shape and dimensions (2.03” × 1.24” × 2.36”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e370V vs. 370\/440V — You Can Upgrade:\u003c\/strong\u003e\u003cbr\u003eThis capacitor is rated 370V. A 370\/440V replacement is electrically acceptable and often easier to source. Never go the other direction — do not install a 370V-only capacitor in equipment that originally specifies 440V. When in doubt, read the label on the old capacitor and match the MFD value exactly.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047422288161,"sku":"36-7.5J370","price":13.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-7.5J370_Oval_7.5MFD_370V.png?v=1784514342"},{"product_id":"rotom-run-capacitor-round-80mfd-370-440v-36-80r3744","title":"Rotom HVAC Run Capacitor 36-80R3744 — Round, 80MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-80R3744 — Round, 80MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-80R3744\u003c\/span\u003e\n    \u003cspan\u003e80 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 5.12”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor or Compressor Not Running? Run Capacitor 36-80R3744 — Fix Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor or compressor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors and compressors, the run capacitor provides continuous phase-shift support while the equipment is operating. When it fails, the motor or compressor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in high-capacity condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-80R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 80MFD PSC motor and compressor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-80R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor or compressor circuit is confirmed to require a single 80MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor or compressor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor or compressor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor or compressor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor or compressor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor or compressor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-80R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 80 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.12 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCF80, PRCF80A, TRCF80, PPS80440RD, 45800R, TP80440R, CR80X440R, LCR80X440R, 14259, USA2229\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor or compressor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 80MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 5.12”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eThe 36-80R3744 is a single run capacitor with one capacitance value (80MFD) and two terminals. A dual run capacitor has two values (e.g., 80\/5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor or compressor circuit. Always verify the original capacitor type and rating before ordering a replacement.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047413473569,"sku":"36-80R3744","price":52.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-80R3744_Round_80MFD_370_440V.png?v=1784513913"},{"product_id":"rotom-run-capacitor-oval-10mfd-370v-36-10j370","title":"Rotom HVAC Run Capacitor 36-10J370 — Oval, 10MFD, 370V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-10J370 — Oval, 10MFD, 370V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-10J370\u003c\/span\u003e\n    \u003cspan\u003e10 µF\u003c\/span\u003e\n    \u003cspan\u003e370 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03” × 1.24” × 2.76”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eGTIN 777980007830\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running Properly? Run Capacitor 36-10J370 — Restores 10MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and auxiliary motor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-10J370\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 10MFD, 370V PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eCanadian Part Number: 36-10J370\u003c\/strong\u003e — Higher-voltage substitute recommended by AMRE: 36-10-370440\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 10MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated 370V\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-10J370\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980007830\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 10 µF (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.76 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher-Voltage Substitute:\u003c\/strong\u003e 36-10-370440 (Rotom, 10MFD, 370\/440V, oval) — recommended by AMRE when 36-10J370 is unavailable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval 370V Equivalents:\u003c\/strong\u003e 12008, POC10A, TOC10, CR10X370\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Consider Upgrading to 370\/440V:\u003c\/strong\u003e\u003cbr\u003eA 440V or 370\/440V oval run capacitor (such as 36-10-370440 or POCF10A) can replace this 370V unit when capacitance remains exactly 10MFD and dimensions are compatible. The higher voltage rating provides additional headroom and is the more commonly stocked option at HVAC supply houses.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, available height and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 10MFD. A replacement rated at 370V, 440V or 370\/440V may be used when its dimensions, terminals and mounting arrangement are compatible. Confirm the oval shape and dimensions (2.03” × 1.24” × 2.76”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e370V vs. 370\/440V — You Can Upgrade:\u003c\/strong\u003e\u003cbr\u003eThis capacitor is rated 370V. A 370\/440V replacement is electrically acceptable and often easier to source — AMRE directs customers to 36-10-370440 as the preferred substitute. Never go the other direction: do not install a 370V-only capacitor in equipment that originally specifies 440V. Note that TOC10 (Titan Pro) was discontinued by the manufacturer on June 29, 2026 but remains a valid legacy cross-reference for identification purposes.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048591122721,"sku":"36-10J370","price":14.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-10J370_Oval_10MFD_370V.png?v=1784547374"},{"product_id":"rotom-dual-run-capacitor-oval-20-15mfd-370-440v-36-20-153744","title":"Rotom HVAC Dual Run Capacitor 36-20-153744 — Oval, 20\/15MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIAL ORDER — OEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-20-153744 — Oval, 20\/15MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-20-153744\u003c\/span\u003e\n    \u003cspan\u003e20\/15 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.80” × 1.77” × 3.55”\u003c\/span\u003e\n    \u003cspan\u003eShips 3–5 Business Days\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor or Compressor Not Starting? Dual Run Capacitor 36-20-153744 — Restores 20\/15MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC system hums but won’t start, or a motor circuit is running weakly, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e The dual run capacitor combines two run-capacitor sections in one case, supporting two motor circuits simultaneously. When it fails, one or both circuits lose the electrical support needed to start and run efficiently. \u003cstrong\u003e⚡ Used in applications requiring separate 20MFD and 15MFD run capacitance from a single oval body.\u003c\/strong\u003e \u003cstrong\u003ePart 36-20-153744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 20\/15MFD motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-20-153744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📦 Special Order This Part —\u003c\/strong\u003e Ships in 3–5 business days. Tracking sent once your order ships.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit requires exactly 20\/15MFD dual run capacitance (not 20\/5MFD, 20\/10MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor or compressor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor or compressor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor or compressor hums but won’t start\u003c\/li\u003e\n\u003cli\u003eOne or both motor circuits run at reduced speed or efficiency\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-20-153744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (two sections in one oval case)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 20\/15 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.80 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.77 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.55 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order — Ships in 3–5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval Equivalents:\u003c\/strong\u003e POCFD2015, POCFD2015A, TOCFD2015, CD20+15X440, 12083\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, terminal layout and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 20\/15MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the oval shape and dimensions (2.80” × 1.77” × 3.55”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e20\/15MFD Is an Uncommon Rating — Verify Both Values:\u003c\/strong\u003e\u003cbr\u003eThe 20\/15MFD combination is less common than 20\/5MFD or 20\/10MFD. Both values must match exactly. Note that 12164 (MARS) is a 370V-only capacitor and is not a valid replacement where 440V is required — despite appearing alongside this part in some AllTemp cross-reference listings. Always read the label on the original capacitor and confirm the voltage rating before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048603312417,"sku":"36-20-153744","price":27.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-20-153744_Oval_20_15MFD_370_440V.png?v=1784547962"},{"product_id":"rotom-dual-run-capacitor-oval-20-5mfd-370-440v-36-20-5-3744","title":"Rotom HVAC Dual Run Capacitor 36-20-5-3744 — Oval, 20\/5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-20-5-3744 — Oval, 20\/5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-20-5-3744\u003c\/span\u003e\n    \u003cspan\u003e20\/5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.80” × 1.77” × 3.15”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-20-5-3744 — Fix Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-20-5-3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-20-5-3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 20\/5MFD (not 20\/4MFD, 20\/7.5MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-20-5-3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 20\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.80 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.77 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.15 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval Equivalents:\u003c\/strong\u003e POCFD205, POCFD205A, TOCFD205, 12180, 12880, CD20+5X440, SFCAP20D5440, C4205L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm oval mounting strap fit, cabinet clearance and terminal clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 20\/5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the oval shape and dimensions (2.80” × 1.77” × 3.15”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eOval vs. Round — Shape Matters for Fit:\u003c\/strong\u003e\u003cbr\u003eThe 36-20-5-3744 is an oval dual run capacitor. Round equivalents like 36-205R3744 carry the same 20\/5MFD rating but require a different mounting strap. Both values must match exactly — a 20\/4MFD or 20\/7.5MFD capacitor is not a substitute even if the voltage and shape match. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048591352097,"sku":"36-20-5-3744","price":24.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-20-5-3744_Oval_20_5MFD_370_440V.png?v=1784548175"},{"product_id":"rotom-dual-run-capacitor-round-25-3mfd-370-440v-36-253r3744","title":"Rotom HVAC Dual Run Capacitor 36-253R3744 — Round, 25\/3MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIAL ORDER — OEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-253R3744 — Round, 25\/3MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-253R3744\u003c\/span\u003e\n    \u003cspan\u003e25\/3 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97” × 3.54”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eShips 3–5 Business Days\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-253R3744 — Restores 25\/3MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-253R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-253R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📦 Special Order This Part —\u003c\/strong\u003e Ships in 3–5 business days. Tracking sent once your order ships.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ Original capacitor is rated exactly 25\/3MFD (not 25\/4MFD, 25\/5MFD or any other value)\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-253R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 25\/3 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in (50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.54 in (90 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order — Ships in 3–5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCFD253, PRCFD253A, TRCFD253, LCD25+3X440R, 12353, 12653, 14353, USA2224BA, C4253R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 25\/3MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (1.97” × 3.54”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e25\/3MFD Is an Uncommon Rating — Verify the Fan Value:\u003c\/strong\u003e\u003cbr\u003eThe 3MFD fan section is less common than 4MFD or 5MFD. Both values must match exactly — a 25\/4MFD or 25\/5MFD capacitor is not a substitute even if the voltage and shape match. Always read the label on the old capacitor directly rather than relying on the unit’s model number alone.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048593482017,"sku":"36-253R3744","price":27.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-253R3744_Round_25_3MFD_370_440V.png?v=1784551167"},{"product_id":"rotom-run-capacitor-round-35mfd-370-440v-36-35r3744","title":"Rotom HVAC Run Capacitor 36-35R3744 — Round, 35MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-35R3744 — Round, 35MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-35R3744\u003c\/span\u003e\n    \u003cspan\u003e35 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.00” × 3.94”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running? Run Capacitor 36-35R3744 — Restores 35MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-35R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 35MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-35R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 35MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-35R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.00 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.94 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS35440RD, PRCF35, PRCF35A, TRCF35, 45350R, TP35440R, CR35X440R, LCR35X440R, 12243, 12743, 14243, USA2214, C435R, 25L502, 97F9611, 97F9611BX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 35MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.00” × 3.94”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eThe 36-35R3744 is a single run capacitor with one capacitance value (35MFD) and two terminals. A dual run capacitor has two values (e.g., 35\/5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor circuit. Always verify the original capacitor type and rating before ordering a replacement. Note: 36-35-370R, PRC35 and 12218 are 370V-only and must not be used where 440V is required.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048626577697,"sku":"36-35R3744","price":23.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-35R3744_Round_35MFD_370_440V.png?v=1784551752"},{"product_id":"rotom-run-capacitor-oval-4mfd-370-440v-36-4-370440","title":"Rotom HVAC Run Capacitor 36-4-370440 — Oval, 4MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-4-370440 — Oval, 4MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-4-370440\u003c\/span\u003e\n    \u003cspan\u003e4 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03” × 1.24” × 2.36”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Starting Weak or Not Running? Run Capacitor 36-4-370440 — Fixes Weak Motor Starting \/ Restores 4MFD Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and auxiliary motor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-4-370440\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 4MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-4-370440\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 4MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-4-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 4 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval Equivalents:\u003c\/strong\u003e PPS4440OV, POCF4, POCF4A, TOCF4, 45040H, TP4440, CR4X440, 12028, 12928, 14028\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, available height and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 4MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the oval shape and dimensions (2.03” × 1.24” × 2.36”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e4MFD Is a Common Fan-Circuit Value — Confirm It’s Not Part of a Dual Run:\u003c\/strong\u003e\u003cbr\u003eA 4MFD single run capacitor has two terminals and one capacitance value. If your original capacitor has three terminals (C, FAN, HERM) and two values (e.g., 35\/4MFD or 45\/4MFD), it is a dual run capacitor — not a single run. Installing a single run capacitor in a dual-run circuit will damage the motor. Always read the label on the old capacitor directly before ordering.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53048693522721,"sku":"36-4-370440","price":12.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-4-370440_Oval_4MFD_370_440V.png?v=1784552148"},{"product_id":"rotom-dual-run-capacitor-round-45-5mfd-370-440v-36-455r3744","title":"Rotom HVAC Dual Run Capacitor 36-455R3744 — Round, 45\/5MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{\nposition:relative;\noverflow:hidden;\nbackground:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;\npadding:44px 34px;\nborder-radius:12px;\nmargin:0 0 28px;\ncolor:#fff;\nbox-shadow:0 10px 30px rgba(0,0,0,.25);\n}\n.hero-banner:before{\ncontent:'';\nposition:absolute;\ninset:0;\nbackground:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);\nanimation:pulse 5s infinite;\n}\n.hero-banner\u003e*{\nposition:relative;\nz-index:2;\n}\n.hero-banner h2{\nmargin:0 0 8px;\nfont-size:1.85em;\nfont-weight:900;\nletter-spacing:.2px;\nline-height:1.1;\n}\n.label{\ndisplay:inline-block;\nbackground:#c8a400;\ncolor:#000;\nfont-size:.72em;\nfont-weight:900;\ntext-transform:uppercase;\nletter-spacing:1px;\npadding:5px 12px;\nborder-radius:999px;\nmargin-bottom:12px;\n}\n.hero-specs{\ndisplay:flex;\nflex-wrap:wrap;\ngap:8px;\nmargin-top:15px;\n}\n.hero-specs span{\nbackground:rgba(255,255,255,.14);\nborder:1px solid rgba(255,255,255,.25);\nborder-radius:999px;\npadding:7px 13px;\nfont-size:.82em;\nfont-weight:800;\n}\n.pro-tip{\nposition:relative;\noverflow:hidden;\nbackground:#1a1a2e;\nborder-left:5px solid #c8a400;\npadding:16px 20px;\nborder-radius:8px;\nmargin:24px 0;\ncolor:#f0f0f0;\nfont-size:.95em;\nline-height:1.6;\n}\n.pro-tip strong{\ncolor:#c8a400;\n}\n.upsell-box{\nbackground:#ffecd1;\nborder-left:5px solid #ff9800;\npadding:14px 18px;\nmargin:20px 0;\nborder-radius:8px;\n}\n@keyframes pulse{\n50%{opacity:.85}\n}\n\u003c\/style\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-455R3744 — Round, 45\/5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-455R3744\u003c\/span\u003e\n    \u003cspan\u003e45\/5MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36\" dia × 4.72\" H\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-455R3744\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- H1 --\u003e\n\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-455R3744 — Restore 45\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body — the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-455R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 45\/5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003c!-- IS THIS THE RIGHT PART --\u003e\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eTest the capacitor and related electrical components before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 45\/5MFD — both values must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Terminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates a round body approximately 2.36\" in diameter and 4.72\" in height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, fan motor, compressor, or electrical-supply problems — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-455R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 45\/5DVR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 45\/5MFD \/ 45\/5 µF (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in \/ 60 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.72 in \/ 120 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 777980034577\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- CROSS-REFERENCE NUMBERS --\u003e\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect round replacements (45\/5MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003e\n45\/5DVR (Rotom alternate), TRCFD455 (Titan Pro \/ Packard), PRCFD455 (Packard), PRCFD455A (Titan HD), PPS545440RD (ProParts), PPHD545440RD (ProParts HD), 4JR0545 (DiversiTech), 4JR0545U (DiversiTech HD), 4JR0545-II-EW (FirstChoice), TP455440R (TradePro), TP455440U (TradePro HD), CD45+5X440R (Supco), 12288 (MARS), 12788 (JARD), 14288 (MARS USA), USA2236 (AmRad), P291-4554RS (Totaline \/ Carrier), 97F9851 (Genteq \/ CAPCOM)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — oval shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e\n36-45-5-3744 (Rotom oval), 45\/5DV (Rotom oval alternate), TOCFD455 (Titan Pro), POCFD455 (Packard), POCFD455A (Titan HD), CD45+5X440 (Supco), 4JJ0545 (DiversiTech), 12190 (MARS), 97F9844BX (Genteq), C4455L (Genteq \/ CAPCOM) — same 45\/5MFD and 440V electrical rating; oval case requires confirmation that a different mounting strap and enclosure clearance can be accommodated.\u003c\/p\u003e\n\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003e\nInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units — addressing both at the same service call avoids a repeat visit.\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\n\n\u003c!-- SPECIFICATION COMPATIBILITY --\u003e\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 45\/5MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (2.36\" diameter × 4.72\" height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values — 45MFD and 5MFD Separately:\u003c\/strong\u003e\u003cbr\u003e\nA dual-run capacitor has two independent capacitance values — 45MFD for the compressor circuit and 5MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the ±5% tolerance. If either value reads out of tolerance, replace the entire capacitor — both circuits share the same component body and cannot be serviced independently.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012410892577,"sku":"36-455R3744","price":34.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/36-455R3744.png?v=1784220160"},{"product_id":"rotom-run-capacitor-round-45mfd-370-440v-36-45r3744","title":"Rotom HVAC Run Capacitor 36-45R3744 — Round, 45MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-45R3744 — Round, 45MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-45R3744\u003c\/span\u003e\n    \u003cspan\u003e45 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.00” × 4.33”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running Properly? Run Capacitor 36-45R3744 — Fix Motor Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and compressor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-45R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 45MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-45R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 45MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-45R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 45 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.00 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCF45, PRCF45A, TRCF45, PPS45440RD, 45450R, TP45440R, CR45X440R, 12248, 12748, 14248, USA2216, C445R, 97F9645, 97F9645BX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor and motor windings at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm mounting strap diameter and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 45MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.00” × 4.33”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle Run vs. Dual Run — Know the Difference:\u003c\/strong\u003e\u003cbr\u003eA single run capacitor like the 36-45R3744 has one capacitance value and two terminals. A dual run capacitor has two values (e.g., 45\/5MFD) and three terminals (C, FAN, HERM). Installing the wrong type will damage the motor circuit. Always verify the original capacitor type before ordering a replacement.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047362191649,"sku":"36-45R3744","price":35.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-45R3744_Round_45MFD_370_440V.png?v=1784511571"},{"product_id":"rotom-dual-run-capacitor-round-55-5mfd-370-440v-36-555r3744","title":"Rotom HVAC Dual Run Capacitor 36-555R3744 — Round, 55\/5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-555R3744 — Round, 55\/5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-555R3744\u003c\/span\u003e\n    \u003cspan\u003e55\/5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 5.12”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eGTIN 777980034614\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-555R3744 — Fix Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-555R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-555R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-555R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980034614\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 55\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.12 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS555440RD, PRCFD555, PRCFD555A, TRCFD555, 4JR0555, 4JR0555U, TP555440R, CD55+5X440R, LCD55+5X440R, 12292, 12792, 14292, USA2240, 97F9839, 97F9839BX, C4555R\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 55\/5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 5.12”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eCheck Both Values Before Ordering:\u003c\/strong\u003e\u003cbr\u003eDual run capacitors carry two capacitance ratings — one for the compressor (HERM) and one for the fan (FAN). Both must match exactly. A 50\/5 or 55\/7.5MFD capacitor is not a substitute for a 55\/5MFD unit even if the voltage and shape match. When in doubt, read the label on the old capacitor directly rather than relying on the unit’s model number alone.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047363076385,"sku":"36-555R3744","price":42.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-555R3744_Round_55_5MFD_370_440V.png?v=1784511876"},{"product_id":"rotom-run-capacitor-oval-7-5mfd-370-440v-36-7-370440","title":"Rotom HVAC Run Capacitor 36-7-370440 — Oval, 7.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Run Capacitor 36-7-370440 — Oval, 7.5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-7-370440\u003c\/span\u003e\n    \u003cspan\u003e7.5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eOval — 2.03” × 1.24” × 2.36”\u003c\/span\u003e\n    \u003cspan\u003eSingle Run\u003c\/span\u003e\n    \u003cspan\u003eGTIN 777980032979\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Motor Not Running Properly? Run Capacitor 36-7-370440 — Fix Motor Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your HVAC motor hums but won’t start, runs weakly, or draws excessive current, a failed run capacitor is one of the most common causes.\u003c\/strong\u003e In PSC (permanent split capacitor) motors, the run capacitor provides continuous phase-shift support while the motor is operating. When it fails, the motor loses efficiency, struggles to start, or stops running entirely. \u003cstrong\u003e⚡ Common failure point in condenser fan motors, blower motors, and auxiliary motor circuits.\u003c\/strong\u003e \u003cstrong\u003ePart 36-7-370440\u003c\/strong\u003e is the Rotom OEM replacement that restores proper run capacitance to compatible 7.5MFD PSC motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-7-370440\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Motor circuit is confirmed to require a single 7.5MFD run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Motor windings are not open or shorted\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the motor failing to start or running below rated speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMotor hums but won’t start or start is sluggish\u003c\/li\u003e\n\u003cli\u003eFan or blower runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips thermal overload\u003c\/li\u003e\n\u003cli\u003eUnit draws higher than normal current\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the motor circuit.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the run capacitor restores normal motor operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-7-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/UPC:\u003c\/strong\u003e 777980032979\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single motor-run capacitor (not a dual-run, not a start capacitor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 7.5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Oval Equivalents:\u003c\/strong\u003e POCF7.5, POCF7.5A, POC7.5, TOCF7.5, OCF7.5, CR7.5X440, 45075H, 12031, 14031\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the motor windings and contactor at the same time. A capacitor that has failed due to age or heat stress often indicates the motor itself is approaching end of life. Confirming motor condition during the same service call prevents a repeat failure.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 20 to 45 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal connections exactly to the original wiring. Confirm oval mounting strap fit, available height and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Capacitance must remain exactly 7.5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the oval shape and dimensions (2.03” × 1.24” × 2.36”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eOval vs. Round — Shape Matters for Fit:\u003c\/strong\u003e\u003cbr\u003eThe 36-7-370440 is an oval capacitor. Round equivalents like PRCF7.5 carry the same 7.5MFD rating but require a different mounting strap. If your original bracket is oval, order an oval replacement. If you’re unsure, photograph the original capacitor and bracket before removing it.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047370678561,"sku":"36-7-370440","price":13.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-7-370440_Oval_7.5MFD_370_440V.png?v=1784512659"},{"product_id":"rotom-dual-run-capacitor-round-20-5mfd-370-440v-36-205r3744","title":"Rotom HVAC Dual Run Capacitor 36-205R3744 — Round, 20\/5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIAL ORDER — OEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-205R3744 — Round, 20\/5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-205R3744\u003c\/span\u003e\n    \u003cspan\u003e20\/5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97” × 3.54”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eShips 3–5 Business Days\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-205R3744 — Fix Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is one of the most common causes.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-205R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-205R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📦 Special Order This Part —\u003c\/strong\u003e Ships in 3–5 business days. Tracking sent once your order ships.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-205R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 20\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.54 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order — Ships in 3–5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PPS520440RD, PRCFD205, PRCFD205A, TRCFD205, 4JR0520, TP205440R, CD20+5X440R, LCD20+5X440R, 12780, 14115, USA2222\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 20\/5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (1.97” × 3.54”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eCheck Both Values Before Ordering:\u003c\/strong\u003e\u003cbr\u003eDual run capacitors carry two capacitance ratings — one for the compressor (HERM) and one for the fan (FAN). Both must match exactly. A 20\/3MFD or 20\/7.5MFD capacitor is not a substitute for a 20\/5MFD unit even if the voltage and shape match. When in doubt, read the label on the old capacitor directly rather than relying on the unit’s model number alone.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012411810081,"sku":"36-205R3744","price":23.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-205R3744_Round_20_5MFD_370_440V.png?v=1784513589"},{"product_id":"rotom-dual-run-capacitor-round-40-5mfd-370-440v-36-405r3744","title":"Rotom HVAC Dual Run Capacitor 36-405R3744 - Round, 40\/5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Dual Run Capacitor 36-405R3744 - Restores 40\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-405R3744\u003c\/span\u003e\u003cspan\u003e40\/5MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eRound - 2.36in dia x 4.72in H\u003c\/span\u003e\u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\u003cspan\u003eIn Stock\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-405R3744\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-405R3744 - Restore 40\/5MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body - the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-405R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 40\/5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 40\/5MFD - both values must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eTerminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates a round body approximately 2.36in in diameter and 4.72in in height\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor, compressor, or electrical-supply fault - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-405R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 40\/5MFD \/ 40\/5 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.72 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect round replacements (40\/5MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003ePRCFD405 (Packard), PRCFD405A (Titan HD), TRCFD405 (Titan Pro), PPS540440RD (ProParts standard), PPHD540440RD (ProParts HD), TP405440U (TradePro), 4JR0540 (DiversiTech), CD40+5X440R (Supco), 12286 (MARS), 12786 (JARD\/MARS), USA2235 (AmRad), 97F9838 (Genteq\/Capcom), C4405R (Genteq\/Capcom) - electrical ratings and round shape match; diameter and height vary. Confirm mounting strap diameter, cabinet clearance and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents - oval case (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-40-5-3744 (Rotom, oval, manufacturer-discontinued), POCFD405A (Titan HD, oval), TOCFD405 (Titan Pro, oval) - electrically equivalent; oval case is not a mechanical drop-in for a round mounting bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 40\/5MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (2.36in diameter x 4.72in height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values - 40MFD and 5MFD Separately:\u003c\/strong\u003e\u003cbr\u003eA dual-run capacitor has two independent capacitance values - 40MFD for the compressor circuit and 5MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the plus or minus 5% tolerance. If either value reads out of tolerance, replace the entire capacitor - both circuits share the same component body and cannot be serviced independently.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047248388385,"sku":"36-405R3744","price":33.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-405R3744_Round_40_5MFD_370_440V.png?v=1784499623"},{"product_id":"rotom-dual-run-capacitor-round-25-7-5mfd-370-440v-36-257r3744","title":"Rotom HVAC Dual Run Capacitor 36-257R3744 - Round, 25\/7.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Dual Run Capacitor 36-257R3744 - Restores 25\/7.5MFD Compressor and Fan Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-257R3744\u003c\/span\u003e\u003cspan\u003e25\/7.5MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eRound - 1.97in dia x 4.16in H\u003c\/span\u003e\u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\u003cspan\u003eIn Stock\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-257R3744\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-257R3744 - Restore 25\/7.5MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body - the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-257R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 25\/7.5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 25\/7.5MFD - both values must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eTerminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates a round body approximately 1.97in in diameter and 4.16in in height\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor, compressor, or electrical-supply fault - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-257R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 25\/7.5MFD \/ 25\/7.5 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in (50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.16 in (105 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect round replacements (25\/7.5MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003ePRCFD2575 (Packard), PRCFD2575A (Titan HD), TRCFD2575 (Titan Pro), CD25+7.5X440R (Supco), LCD25+7.5X440R (Supco Linebacker), 12279 (MARS Blue Box), 12779 (JARD\/MARS), 14279 (MARS USA), USA2225B (AmRad), SC2575 (Cool Air Products), 97F9979 (Genteq\/Capcom), 97F9979BX (Genteq\/Capcom), C42575R (Genteq\/Capcom), AM257.5R (Supco USA) - electrical ratings and round shape match; dimensions vary by manufacturer. Confirm mounting-strap diameter, cabinet height and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents - oval case (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003ePOCFD2575A (Titan HD, oval), TOCFD2575 (Titan Pro, oval) - electrically equivalent; oval case is not a mechanical drop-in for a round mounting bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 25\/7.5MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (1.97in diameter x 4.16in height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values - 25MFD and 7.5MFD Separately:\u003c\/strong\u003e\u003cbr\u003eA dual-run capacitor has two independent capacitance values - 25MFD for the compressor circuit and 7.5MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the plus or minus 5% tolerance. If either value reads out of tolerance, replace the entire capacitor - both circuits share the same component body and cannot be serviced independently.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047241867553,"sku":"36-257R3744","price":25.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-257R3744_Round_25_7.5MFD_370_440V.png?v=1784499921"},{"product_id":"rotom-dual-run-capacitor-round-50-5mfd-370-440v-36-505r3744","title":"Rotom HVAC Dual Run Capacitor 36-505R3744 — Round, 50\/5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-505R3744 — Round, 50\/5MFD, 370\/440V\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-505R3744\u003c\/span\u003e\n    \u003cspan\u003e50\/5 µF\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 2.36” × 5.12”\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003eUL \u0026amp; cUL Recognized\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eAC Not Starting or Fan Not Spinning? Dual Run Capacitor 36-505R3744 — Fix Starting Failure Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eIf your air conditioner hums but won’t start, or the condenser fan spins slowly or only when manually pushed, a failed dual run capacitor is the most common cause.\u003c\/strong\u003e In most HVAC systems, the dual run capacitor supports both the compressor and the condenser fan motor from a single component. When it fails, one or both circuits lose the electrical boost needed to start and run. \u003cstrong\u003e⚡ Common failure point in residential central air and heat pump systems.\u003c\/strong\u003e \u003cstrong\u003ePart 36-505R3744\u003c\/strong\u003e is the Rotom OEM replacement that restores proper starting torque and run efficiency to both motor circuits.\u003c\/p\u003e\n\n\u003cp\u003e🇺🇸 \u003cstrong\u003eMatching U.S. Part Number: 36-505R3744\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Unit powers on and the contactor is pulling in\u003c\/li\u003e\n\u003cli\u003e✔ Electrical supply to the unit is confirmed OK\u003c\/li\u003e\n\u003cli\u003e✔ Compressor or condenser fan motor is not seized\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is the compressor or fan failing to start or running weakly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAC hums but compressor won’t start\u003c\/li\u003e\n\u003cli\u003eCondenser fan spins slowly or only when manually pushed\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eHigher than normal energy bills with reduced cooling output\u003c\/li\u003e\n\u003cli\u003eCapacitor is visibly bulged, leaking, or measures out of spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing the dual run capacitor restores normal compressor and fan operation immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-505R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual motor-run capacitor (compressor + condenser fan)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 50\/5 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 370\/440 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.12 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in pressure interrupter; UL and cUL recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/OEM:\u003c\/strong\u003e Rotom \/ AllTemp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Round Equivalents:\u003c\/strong\u003e PRCFD505, PRCFD505A, TRCFD505, 4JR0550, CD50+5X440R, LCD50+5X440R, 12290, 12790, 14290, USA2237\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the contactor at the same time. A worn or pitted contactor is a common companion failure in systems where the capacitor has failed — replacing both during the same service call prevents a repeat call-back.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Moderate — 30 to 60 minutes.\u003c\/strong\u003e Disconnect and lock out power to the unit before opening the electrical compartment. Capacitors retain a hazardous charge after power is removed — discharge safely before handling. Match the terminal labels (C, FAN, HERM) exactly to the original wiring. Confirm mounting strap fit and cabinet clearance before installing — dimensions vary between equivalent brands. Diagnosis and replacement should be completed by a qualified HVAC technician.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eCompatibility for this capacitor is specification-based. Both capacitance values must remain exactly 50\/5MFD, and the replacement voltage must equal or exceed the original equipment requirement. Confirm the round shape and dimensions (2.36” × 5.12”) fit the mounting strap and cabinet clearance before ordering. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eCheck Both Values Before Ordering:\u003c\/strong\u003e\u003cbr\u003eDual run capacitors carry two capacitance ratings — one for the compressor (HERM) and one for the fan (FAN). Both must match exactly. A 45\/5 or 50\/7.5 capacitor is not a substitute for a 50\/5MFD unit even if the voltage and shape match. When in doubt, read the label on the old capacitor directly rather than relying on the unit’s model number alone.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047339090209,"sku":"36-505R3744","price":39.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-505R3744_Round_50_5MFD_370_440V.png?v=1784510282"},{"product_id":"rotom-run-capacitor-oval-6mfd-370-440v-36-6-370440","title":"Rotom HVAC Run Capacitor 36-6-370440 - Oval, 6MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.special-order-box{background:#fff3cd;border-left:5px solid #e6a817;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Run Capacitor 36-6-370440 - Restores 6MFD Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-6-370440\u003c\/span\u003e\u003cspan\u003e6MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eOval - 2.03in W x 1.24in D x 2.36in H\u003c\/span\u003e\u003cspan\u003eSpecial Order\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-6-370440\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Slowly? Rotom Run Capacitor 36-6-370440 - Restore 6MFD Motor Run Capacitance\u003c\/h1\u003e\u003cdiv class=\"special-order-box\"\u003e\n\u003cstrong\u003eSpecial Order Item:\u003c\/strong\u003e Ships in 3-5 business days. Tracking is sent once the order ships. Confirm the complete capacitor specifications before ordering.\u003c\/div\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of fan motor or blower motor starting and running problems in HVAC systems.\u003c\/strong\u003e The single-value run capacitor provides continuous phase-shift support to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC fan motors and blower motor applications.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-6-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 6MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 6MFD - capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eYour application uses a single-value oval run capacitor - not a dual-run capacitor and not a start capacitor\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates an oval body approximately 2.03in wide, 1.24in deep and 2.36in high\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFan or blower motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts slowly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, relays, contactors, motor winding failure, or electrical-supply faults - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-6-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 6MFD \/ 6 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.36 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Special Order - ships in 3-5 business days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect oval replacements (6MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e12030 (MARS Blue Box), 12930 (JARD \/ MARS), 14030 (MARS USA), POCF6A (Titan HD), TOCF6 (Titan Pro), CR6X440 (Supco), 45060H (DiversiTech), OCF6, P291-0604 (Totaline), USA2030 (AmRad) - capacitance, voltage class and oval shape match; case height varies. Rotom measures approximately 2.36in high; some alternatives range from approximately 2.06 to 3in high. Confirm mounting strap, terminal clearance and available cabinet height before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalent - round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-6R3744 (Rotom round, 6MFD, 370\/440V, approximately 1.65in dia x 2.37in H) - electrically equivalent; round case is not a mechanical drop-in for an oval mounting bracket. A different strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires an \u003cstrong\u003eoval single-value run capacitor rated at exactly 6MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.03in wide x 1.24in deep x 2.36in high) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle-Run vs. Dual-Run - Confirm Before Ordering:\u003c\/strong\u003e\u003cbr\u003eA single-value run capacitor like 36-6-370440 has two terminals and supports one motor circuit only. If your original capacitor has three terminals (C, FAN, HERM) and two capacitance values printed on the label, you need a dual-run capacitor instead. Check the label carefully before ordering.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53047209787681,"sku":"36-6-370440","price":12.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-6-370440_Oval_6MFD_370_440V.png?v=1784496288"},{"product_id":"rotom-run-capacitor-oval-12-5mfd-370-440v-36-12-370440","title":"Rotom HVAC Motor Run Capacitor 36-12-370440 — Oval, 12.5MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Motor Run Capacitor 36-12-370440 — Restores 12.5MFD Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-12-370440\u003c\/span\u003e\u003cspan\u003eAlt: 12.5DV\u003c\/span\u003e\u003cspan\u003e12.5MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eOval — 2.03in W x 1.24in D x 3.15in H\u003c\/span\u003e\u003cspan\u003eQuick-Connect Terminals\u003c\/span\u003e\u003cspan\u003e✅ In Stock\u003c\/span\u003e\u003cspan\u003e🇺🇸 U.S. Part#: 36-12-370440\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Slowly? Rotom Motor Run Capacitor 36-12-370440 — Restore 12.5MFD Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of fan motor or blower motor starting and running problems in HVAC systems.\u003c\/strong\u003e The single-value run capacitor maintains the phase shift needed to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run hot, or shut off on thermal overload.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC fan motors, blower motors, and condenser fan applications.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-12-370440\u003c\/strong\u003e (also known as Rotom alternate number \u003cstrong\u003e12.5DV\u003c\/strong\u003e) is the Rotom specification-based replacement rated at 12.5MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 12.5MFD — capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Your application uses a single-value oval run capacitor (not a dual-run capacitor)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates an oval body approximately 2.03in wide, 1.24in deep and 3.15in high\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we will confirm before you order.\u003c\/p\u003e\u003ch3\u003e🔧 Common Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFan or blower motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts slowly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor winding failure, or electrical-supply problems — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-12-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Rotom Number:\u003c\/strong\u003e 12.5DV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 12.5MFD \/ 12.5 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 3.15 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e Quick-connect blade terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect oval replacements (12.5MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e12.5DV (Rotom alternate), TOCF12.5 (Titan Pro), POCF12.5 (Packard), POCF12.5A (Titan HD), CR12.5X440 (Supco), 12033 (MARS Blue Box), 14033 (MARS USA), P291-1254 (Totaline \/ Carrier), 97F5388 (Genteq\/CAPCOM), 97F5388BX (Genteq\/CAPCOM), C412L (Genteq\/CAPCOM), 325P12DH44A26A4Z (JARD\/NGM) — electrical ratings and oval shape match; case height varies by manufacturer. Confirm mounting strap, cabinet clearance and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents — round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-12R3744 (Rotom round), 12.5DVR (Rotom alternate round), TRCF12.5 (Titan Pro), PRCF12.5 (Packard), PRCF12.5A (Titan HD), CR12.5X440R (Supco), 325P12DH44M20A4Z (JARD\/NGM), 43-25136-26 (Rheem\/Protech), 43-TL12004-R (TrueLine), 97F5001 (Genteq\/CAPCOM), C412R (Genteq\/CAPCOM) — electrically equivalent; round case is not a mechanical drop-in for an oval bracket. The Rotom round equivalent (36-12R3744) measures approximately 1.65in dia x 2.78in H. A different mounting strap may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units — addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires an \u003cstrong\u003eoval single-value run capacitor rated at exactly 12.5MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.03in wide x 1.24in deep x 3.15in high) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle-Run vs. Dual-Run — Confirm Before Ordering:\u003c\/strong\u003e\u003cbr\u003eA single-value run capacitor like 36-12-370440 has two terminals and supports one motor circuit only. If your original capacitor has three terminals (C, FAN, HERM) and two capacitance values printed on the label, you need a dual-run capacitor instead. Check the label carefully before ordering.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003e🔗 \u003cstrong\u003eBrowse All HVAC Capacitors:\u003c\/strong\u003e Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e — single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53046878273825,"sku":"36-12-370440","price":16.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-12-370440_Oval_12.5MFD_370_440V.png?v=1784481577"},{"product_id":"rotom-run-capacitor-oval-50mfd-370-440v-36-50-370440","title":"Rotom HVAC Run Capacitor 36-50-370440 - Oval, 50MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Run Capacitor 36-50-370440 - Restores 50MFD Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-50-370440\u003c\/span\u003e\u003cspan\u003e50MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eOval - 2.80in W x 1.77in D x 4.33in H\u003c\/span\u003e\u003cspan\u003eIn Stock\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-50-370440\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Slowly? Rotom Run Capacitor 36-50-370440 - Restore 50MFD Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of compressor, blower motor or condenser-fan motor starting and running problems in HVAC systems.\u003c\/strong\u003e The single-value run capacitor provides continuous phase-shift support to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run intermittently, or overheat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC compressors, blower motors and condenser-fan motors.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-50-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 50MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 50MFD - capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eYour application uses a single-value oval run capacitor - not a dual-run capacitor and not a start capacitor\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates an oval body approximately 2.80in wide, 1.77in deep and 4.33in high\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompressor, blower or condenser-fan motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts slowly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot, trips on thermal overload, or shuts off intermittently\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, contactors, relays, motor winding failure, or electrical-supply faults - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-50-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 50MFD \/ 50 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.80 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.77 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect oval replacements (50MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003ePOC50 (Packard), 12049 (MARS), CR50X440 (Supco), 45500HU (DiversiTech) - capacitance, voltage class and oval configuration match; case dimensions may differ slightly by manufacturer. Confirm mounting strap, available height and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalent - round shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e36-50R3744 (Rotom round, 50MFD, 370\/440V) - electrically equivalent; round case is not a mechanical drop-in for an oval mounting bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires an \u003cstrong\u003eoval single-value run capacitor rated at exactly 50MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.80in wide x 1.77in deep x 4.33in high) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eSingle-Run vs. Dual-Run - Confirm Before Ordering:\u003c\/strong\u003e\u003cbr\u003eA single-value run capacitor like 36-50-370440 has two terminals and supports one motor circuit only. If your original capacitor has three terminals (C, FAN, HERM) and two capacitance values printed on the label, you need a dual-run capacitor instead. A 50MFD single-run capacitor is commonly used for compressor-only applications where the fan motor has its own separate capacitor. Check the label carefully before ordering.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53046902227233,"sku":"36-50-370440","price":36.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-50-370440_Oval_50MFD_370_440V.png?v=1784482143"},{"product_id":"rotom-run-capacitor-oval-2mfd-370-440v-36-2-370440","title":"Rotom HVAC Run Capacitor 36-2-370440 - Oval, 2MFD, 370\/440V","description":"\u003cstyle\u003e.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}.hero-banner\u003e*{position:relative;z-index:2}.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}.pro-tip strong{color:#c8a400}.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}@keyframes pulse{50%{opacity:.85}}\u003c\/style\u003e\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n\u003ch2\u003eRotom HVAC Run Capacitor 36-2-370440 - Restores 2MFD Motor Run Capacitance\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 36-2-370440\u003c\/span\u003e\u003cspan\u003e2MFD\u003c\/span\u003e\u003cspan\u003e370\/440 VAC\u003c\/span\u003e\u003cspan\u003eOval - 2.03in W x 1.24in D x 1.58in H\u003c\/span\u003e\u003cspan\u003eIn Stock\u003c\/span\u003e\u003cspan\u003eU.S. Part#: 36-2-370440\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch1\u003eHVAC Motor Not Starting or Running Slowly? Rotom Run Capacitor 36-2-370440 - Restore 2MFD Motor Run Capacitance\u003c\/h1\u003e\u003cp\u003e\u003cstrong\u003eA defective motor-run capacitor is one possible cause of fan motor or blower motor starting and running problems in HVAC systems.\u003c\/strong\u003e The single-value run capacitor maintains the phase shift needed to keep the motor running efficiently. When it fails, the motor may hum, struggle to reach operating speed, run hot, or shut off on thermal overload.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon service component in residential and light-commercial HVAC fan motors and blower motor applications.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart 36-2-370440\u003c\/strong\u003e is the Rotom specification-based replacement rated at 2MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\u003ch3\u003eIs This the Right Part?\u003c\/h3\u003e\u003cp\u003eConfirm MFD, Voltage, Shape and Dimensions before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYour original capacitor is rated exactly 2MFD - capacitance must match exactly\u003c\/li\u003e\n\u003cli\u003eYour original capacitor is rated 370V or 440V - a 440V replacement may replace a 370V original; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003eYour application uses a single-value oval run capacitor - not a dual-run capacitor and not a start capacitor\u003c\/li\u003e\n\u003cli\u003eYour mounting space accommodates an oval body approximately 2.03in wide, 1.24in deep and 1.58in high\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e - we will confirm before you order.\u003c\/p\u003e\u003ch3\u003eCommon Symptoms of a Failed Motor-Run Capacitor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFan or blower motor hums but fails to start\u003c\/li\u003e\n\u003cli\u003eMotor starts slowly or struggles to reach full operating speed\u003c\/li\u003e\n\u003cli\u003eMotor runs hot or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor winding failure, or electrical-supply problems - confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-2-370440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp - New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oval Single-Value HVAC Motor-Run Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 2MFD \/ 2 uF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.03 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 1.24 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.58 in (compact - verify available mounting height)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based - match capacitance, voltage, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Replaces These Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDirect oval replacements (2MFD, 370\/440V, oval):\u003c\/strong\u003e\u003cbr\u003e12026 (MARS Blue Box), 12926 (MARS\/JARD), 14026 (MARS USA), POCF2A (Titan HD), POCF2 (Packard\/Titan), TOCF2 (Titan Pro), CR2X440 (Supco), 45020H (DiversiTech), 27L1021 (Genteq\/Capcom), 27L1021BX (Genteq\/Capcom), C402 (Capcom\/Genteq), C402L (Capcom\/Genteq), OCF2 - electrical rating and oval configuration match; case height varies. The Rotom case is approximately 1.58in high; some equivalents are 2.0 to 3.0in high. Confirm mounting strap size, available height and terminal clearance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eElectrical equivalents - different case shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003e14102 (MARS USA, round), 36-2S440 (Rotom, square plastic, 250-440V), 12382 (MARS mini-split, square, 450V) - electrically equivalent; not mechanical drop-in replacements for the original oval bracket. A replacement mounting method may be required. Do not leave a capacitor unsecured inside the equipment.\u003c\/p\u003e\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003eRecommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a run capacitor in aging HVAC units - addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced - Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Connect the replacement to the same terminals and confirm all connections are secure before restoring power and testing motor operation.\u003c\/p\u003e\u003ch3\u003eSpecification Compatibility\u003c\/h3\u003e\u003cp\u003eThis capacitor is compatible with any HVAC motor application that requires an \u003cstrong\u003eoval single-value run capacitor rated at exactly 2MFD and 370V or 440V\u003c\/strong\u003e, provided the oval body (2.03in wide x 1.24in deep x 1.58in high) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit - not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\u003ch3\u003ePro Tip\u003c\/h3\u003e\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eCheck Case Height Before Ordering:\u003c\/strong\u003e\u003cbr\u003eAt 1.58in high, the Rotom 36-2-370440 is one of the more compact 2MFD oval capacitors available. If ordering a cross-reference equivalent from another brand, verify the case height against your available mounting space - some 2MFD oval capacitors from other manufacturers are 2.0 to 3.0in high and may not fit the original bracket without modification.\u003c\/div\u003e\u003cdiv class=\"bidir-box\"\u003eBrowse All HVAC Capacitors: Looking for a different MFD rating or capacitor type? Browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection at XPart Supply\u003c\/a\u003e - single-run, dual-run, round and oval capacitors in stock and available by special order.\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"OEM","offer_id":53046951641377,"sku":"36-2-370440","price":14.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Run_Capacitor_36-2-370440_Oval_2MFD_370_440V.png?v=1784482985"},{"product_id":"rotom-dual-run-capacitor-round-30-3mfd-370-440v-36-303r3744","title":"Rotom HVAC Dual Run Capacitor 36-303R3744 — Round, 30\/3MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}\n.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}\n.hero-banner\u003e*{position:relative;z-index:2}\n.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}\n.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}\n.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}\n.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}\n.pro-tip strong{color:#c8a400}\n.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}\n.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}\n.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}\n@keyframes pulse{50%{opacity:.85}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-303R3744 — Restores 30\/3MFD Compressor and Fan Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-303R3744\u003c\/span\u003e\n    \u003cspan\u003e30\/3MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97\" dia × 4.13\" H\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003e✅ In Stock\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-303R3744\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-303R3744 — Restore 30\/3MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body — the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-303R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 30\/3MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the complete capacitor specifications and mounting space before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 30\/3MFD — both values must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Terminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates a round body approximately 1.97\" in diameter and 4.13\" in height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor, compressor, or electrical-supply fault — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-303R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 30\/3MFD \/ 30\/3 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.13 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect round replacements (30\/3MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003eTRCFD303 (Titan Pro), PRCFD303 (Packard), PRCFD303A (Titan HD), PPHD330440RD (ProParts HD), TP303440U (TradePro HD), CD30+3X440R (Supco), LCD30+3X440R (Supco Linebacker), 12126 (MARS), 12826 (JARD), 14126 (MARS USA) — electrical ratings and round shape match; case diameter and height vary between manufacturers. Confirm mounting strap, cabinet clearance and terminal clearance before ordering.\u003c\/p\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units — addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 30\/3MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (1.97\" diameter × 4.13\" height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values — 30MFD and 3MFD Separately:\u003c\/strong\u003e\u003cbr\u003eA dual-run capacitor has two independent capacitance values — 30MFD for the compressor circuit and 3MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the ±5% tolerance. If either value reads out of tolerance, replace the entire capacitor — both circuits share the same component body and cannot be serviced independently.\u003c\/div\u003e\n\n\u003cdiv class=\"bidir-box\"\u003e🔗 \u003cstrong\u003eBrowse All Rotom Dual Run Capacitors:\u003c\/strong\u003e Looking for a different MFD rating? View the \u003ca href=\"\/pages\/hvac-dual-run-capacitors\"\u003eHVAC Dual Run Capacitors guide\u003c\/a\u003e — round and oval, 370\/440V, 15\/3MFD to 60\/10MFD. Or browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012413612321,"sku":"36-303R3744","price":26.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-303R3744_Round_30_3MFD_370_440V.png?v=1784429623"},{"product_id":"rotom-dual-run-capacitor-round-35-3mfd-370-440v-36-353r3744","title":"Rotom HVAC Dual Run Capacitor 36-353R3744 — Round, 35\/3MFD, 370\/440V","description":"\u003cstyle\u003e\n.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}\n.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}\n.hero-banner\u003e*{position:relative;z-index:2}\n.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}\n.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}\n.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}\n.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}\n.pro-tip strong{color:#c8a400}\n.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}\n.bidir-box{background:#f4f6f8;border-left:4px solid #c8a400;padding:12px 18px;border-radius:6px;margin:28px 0 0;font-size:.9em;color:#333}\n.bidir-box a{color:#1a6b3a;font-weight:600;text-decoration:none}\n@keyframes pulse{50%{opacity:.85}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eSPECIFICATION-BASED REPLACEMENT\u003c\/div\u003e\n  \u003ch2\u003eRotom HVAC Dual Run Capacitor 36-353R3744 — Restores 35\/3MFD Compressor and Fan Motor Run Capacitance\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# 36-353R3744\u003c\/span\u003e\n    \u003cspan\u003e35\/3MFD\u003c\/span\u003e\n    \u003cspan\u003e370\/440 VAC\u003c\/span\u003e\n    \u003cspan\u003eRound — 1.97\" dia × 4.33\" H\u003c\/span\u003e\n    \u003cspan\u003eC \/ FAN \/ HERM\u003c\/span\u003e\n    \u003cspan\u003e✅ In Stock\u003c\/span\u003e\n    \u003cspan\u003e🇺🇸 U.S. Part#: 36-353R3744\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eHVAC Compressor or Fan Not Starting? Rotom Dual Run Capacitor 36-353R3744 — Restore 35\/3MFD Compressor and Fan Motor Run Capacitance\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eA defective dual-run capacitor is one possible cause of compressor or condenser-fan starting and running problems in HVAC systems.\u003c\/strong\u003e The dual-run capacitor supports two motor circuits from one body — the compressor through the HERM terminal and the condenser-fan motor through the FAN terminal, with C as the shared common connection. When it fails, one or both motors may hum, struggle to start, operate intermittently, or overheat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚡ Common service component in residential and light-commercial HVAC condensing units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart 36-353R3744\u003c\/strong\u003e is the Rotom specification-based replacement rated at 35\/3MFD and 370\/440 VAC that may restore proper motor-run support when testing confirms the original capacitor is defective and no related motor or electrical fault remains.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eConfirm the complete capacitor specifications and mounting space before ordering. This is the correct specification match if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Your original capacitor is rated exactly 35\/3MFD — both values must match exactly\u003c\/li\u003e\n\u003cli\u003e✔ Your original capacitor is rated 370V or 440V — a 440V replacement may replace a 370V original when capacitance matches; the reverse is not permitted\u003c\/li\u003e\n\u003cli\u003e✔ Terminal arrangement is C \/ FAN \/ HERM (three-terminal dual-run)\u003c\/li\u003e\n\u003cli\u003e✔ Your mounting space accommodates a round body approximately 1.97\" in diameter and 4.33\" in height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your capacitor label specs\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms of a Failed Dual-Run Capacitor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor hums but fails to start or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eCondenser fan motor struggles to start or runs at reduced speed\u003c\/li\u003e\n\u003cli\u003eHVAC system short-cycles or shuts off shortly after starting\u003c\/li\u003e\n\u003cli\u003eCapacitor body visibly bulged, leaking, or reads out-of-tolerance on a capacitance meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match and capacitor testing confirms a defective reading, this is a likely failed component. Similar symptoms may also result from wiring, a contactor, motor, compressor, or electrical-supply fault — confirm the capacitor is the root cause before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 36-353R3744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rotom \/ AllTemp — New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Round Dual-Run HVAC Capacitor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e 35\/3MFD \/ 35\/3 µF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 370\/440 VAC (dual-voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1.97 in \/ 50 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4.33 in \/ 110 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Arrangement:\u003c\/strong\u003e C \/ FAN \/ HERM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Built-in interrupter, UL and cUL Recognized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specification-based — match both capacitance values, voltage, terminal arrangement, shape, and dimensions to original\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔄 Also Replaces These Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect round replacements (35\/3MFD, 370\/440V, round):\u003c\/strong\u003e\u003cbr\u003eTRCFD353 (Titan Pro), PRCFD353 (Packard), PRCFD353A (Titan HD), PPHD335440RD (ProParts HD), TP353440U (TradePro HD), 4JR0335 (DiversiTech), CD35+3X440R (Supco), 12077 (MARS Blue Box), 12977 (JARD \/ MARS), 14077 (MARS USA) — electrical ratings and round shape match; case dimensions vary among manufacturers. Confirm mounting strap diameter, capacitor height and terminal clearance before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical equivalents — oval shape (confirm mounting fit before ordering):\u003c\/strong\u003e\u003cbr\u003eTOCFD353 (Titan Pro, oval), POCFD353A (Titan HD, oval), 12085 (MARS Blue Box, oval), 12985 (JARD \/ MARS, oval), C4353L (Genteq \/ CAPCOM, oval) — electrically equivalent; oval case is not a mechanical drop-in for a round bracket. A different mounting strap or bracket may be required.\u003c\/p\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Servicing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003econtactor\u003c\/strong\u003e while the unit is open and replace it only when testing or visible damage (pitting, burning) confirms it is defective. A worn contactor is a common co-failure with a capacitor in aging condensing units — addressing both at the same service call avoids a repeat visit.\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — Qualified HVAC Technician Required.\u003c\/strong\u003e Disconnect and lock out all power to the condensing unit before opening the electrical compartment. HVAC capacitor diagnosis and replacement should be completed by a qualified technician. Photograph the original wiring before disconnecting. Note terminal labelling (C, FAN, HERM), connect the replacement to the same terminals, and confirm all connections are secure before restoring power and testing compressor and fan operation.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Specification Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis capacitor is compatible with any HVAC condensing unit that requires a \u003cstrong\u003eround dual-run capacitor rated at exactly 35\/3MFD and 370V or 440V\u003c\/strong\u003e with a C \/ FAN \/ HERM terminal arrangement, provided the round body (1.97\" diameter × 4.33\" height) fits the existing mounting bracket. Compatibility is determined by electrical specification and physical fit — not by equipment model number. \u003ca href=\"\/pages\/contact\"\u003eContact us with your original capacitor label\u003c\/a\u003e before ordering if you are unsure.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eTest Both Values — 35MFD and 3MFD Separately:\u003c\/strong\u003e\u003cbr\u003eA dual-run capacitor has two independent capacitance values — 35MFD for the compressor circuit and 3MFD for the fan circuit. Use a dedicated capacitor tester to check both values against the ±5% tolerance. If either value reads out of tolerance, replace the entire capacitor — both circuits share the same component body and cannot be serviced independently.\u003c\/div\u003e\n\n\u003cdiv class=\"bidir-box\"\u003e🔗 \u003cstrong\u003eBrowse All Rotom Dual Run Capacitors:\u003c\/strong\u003e Looking for a different MFD rating? View the \u003ca href=\"\/pages\/hvac-dual-run-capacitors\"\u003eHVAC Dual Run Capacitors guide\u003c\/a\u003e — round and oval, 370\/440V, 15\/3MFD to 60\/10MFD. Or browse the full \u003ca href=\"\/collections\/hvac-capacitors\"\u003eHVAC Capacitors collection\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"Rotom","offers":[{"title":"Default Title","offer_id":53012413743393,"sku":"36-353R3744","price":27.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Rotom_Dual_Run_Capacitor_36-353R3744_Round_35_3MFD_370_440V..png?v=1784428738"}],"url":"https:\/\/xpartsupply.com\/collections\/hvac.oembed?page=18","provider":"XPart Supply Ltd.","version":"1.0","type":"link"}