Microwave Not Venting Properly? Grease Filter 5230W1A012B – Restore Airflow Fast
A clogged or damaged grease filter is the #1 cause of poor ventilation and grease buildup in LG over-the-range microwaves. In most LG and Kenmore microwaves, the grease filter sits beneath the unit and captures airborne grease from the cooktop below. When it fails or becomes saturated, exhaust airflow drops sharply, grease accumulates on internal components, and odours linger in the kitchen. ⚡ Common wear item in LG-built over-the-range microwaves — typically replaced every 6–12 months. Part 5230W1A012B is the genuine OEM replacement that restores full exhaust performance and protects internal fan and duct components from grease contamination.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ Your microwave powers on and runs normally
- ✔ The fan and light functions work correctly
- ✔ Electrical supply to the unit is confirmed OK
- ✔ ONLY problem is reduced airflow, grease buildup, or a visibly dirty/damaged filter
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- Reduced or weak exhaust airflow when vent fan is running
- Visible grease buildup or discolouration on the filter mesh
- Persistent cooking odours that don't clear after venting
- Filter is torn, warped, or missing entirely
✔ If these symptoms match, the grease filter is the most likely failed component in the ventilation system.
✔ In most cases, replacing this grease filter restores normal exhaust performance immediately.
📦 Part Details
- Part Number: 5230W1A012B
- Type: Mesh grease filter for over-the-range microwave ventilation systems
- Replaces: 5230W1A012A, 5230W1A012B
- Brands: LG, Kenmore
If your microwave also has a charcoal odour filter, replace it at the same time — both filters work together to manage exhaust air quality, and replacing only one leaves the system partially compromised.
⚙️ Installation
Skill Level: EASY — 5 minutes or less. Disconnect power before servicing. Slide or unclip the old filter from the bottom grille of the microwave, align the new filter 5230W1A012B in the same slot, and press or clip it into place. No tools required in most models.
✓ Compatible Models
Confirmed compatible with LG LMV1762ST, LMV2031ST, LMVM2033ST plus additional LG and Kenmore over-the-range microwave models. Contact us to verify your model number before ordering.
💡 Pro Tip
LG over-the-range microwaves use both a grease filter and a charcoal/odour filter. If you're already pulling the unit down to service it, swap both at once — the charcoal filter is equally inexpensive and often just as overdue. Customers who replace both report noticeably better kitchen air quality and avoid a second service call within months.
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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