WP12729127 Whirlpool Refrigerator Defrost Heater – Genuine OEM Replacement
If your Whirlpool refrigerator has excessive frost on the evaporator coils, warm temperatures in the fresh food section, or reduced airflow from the vents, a failed defrost heater is the most common cause. In Whirlpool-family frost-free refrigerators, the defrost heater cycles on periodically to melt frost off the evaporator coils — keeping airflow clear and temperatures stable. When it burns out, frost accumulates unchecked, blocking the evaporator fan and starving the fresh food compartment of cold air. ⚡ Common failure point in Whirlpool, KitchenAid, and Kenmore frost-free refrigerators. Part WP12729127 is the genuine OEM replacement heater that restores the automatic defrost cycle and normal cooling immediately.
Refrigerator WP12729127
Is This the Right Part?
Confirm the complete model number before ordering. Similar parts may use different connectors, dimensions, hose positions, electrical ratings, or mounting points.
- ✔ Freezer section is cold but fresh food compartment is warm
- ✔ Evaporator coils are visibly frosted over or completely iced up
- ✔ Defrost thermostat and defrost timer/control board have been tested and are functional
- ✔ ONLY problem is heater element not energizing during the defrost cycle
- Fresh food compartment warm while freezer stays cold — most common complaint
- Thick frost or solid ice buildup on the back wall of the freezer
- Reduced or no airflow from fresh food vents
- Refrigerator runs constantly but can’t maintain temperature
- Evaporator fan running but no cold air reaching the fresh food section
- Defrost cycle runs but frost does not melt off the coils
- Part Number: WP12729127
- Type: Refrigerator Defrost Heater — glass-encased resistance heater that melts frost from evaporator coils during the automatic defrost cycle
- Brands: Whirlpool, KitchenAid, Kenmore
If the evaporator coils are completely iced over, manually defrost the freezer with a hair dryer or by leaving the doors open for several hours before attempting the repair. Trying to remove the evaporator panel with the coils frozen solid risks cracking the panel and damaging the refrigerant lines. A clean defrost first makes the job faster and safer.
Part Details
Use a qualified technician when diagnosis or installation is outside your experience. Gas parts should be installed by a licensed technician.
✅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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