Customer Questions and Answers for Defrost Heater Assembly by Whirlpool

The Defrost Heater Assembly is an OEM replacement part for Whirlpool refrigerators. Located behind the freezer walls, it prevents ice buildup during automatic defrost cycles. Consistent performance is needed to maintain ideal temperatures. The defrost thermostat is included in the assembly.

Causes of a bad defrost heater assembly can include overheating from being covered in frost, corrosion from moist environments, or broken filaments due to vibration.

Symptoms include: 

• Ice accumulating on freezer walls instead of melting away
• Refrigerator failing to properly defrost 
• Fault codes displayed related to defrost functions

Compatible with KitchenAid, Jenn-Air, and other brands, it ensures prolonged efficiency.