The Defrost Heater Assembly is an OEM part for GE refrigerators. This component is crucial for preventing frost buildup on the evaporator coils by periodically melting any ice that accumulates. It ensures that the refrigerator operates efficiently and maintains the proper temperature. Causes of a bad defrost heater assembly can include electrical failures, wear and tear over time, or damage to the heater element. Continuous cycling of the heater can also lead to deterioration of its components. Symptoms of a bad defrost heater assembly include: Frost buildup on the evaporator coils The refrigerator not maintaining a consistent temperature Increased energy consumption The refrigerator running continuously or for extended periods This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.WR51X10029 (AP2071521) replaces 880031, AH303760, EA303760, PS303760.