This DIY repair guide gives step-by-step instructions for replacing a defrost heater in a top-freezer refrigerator. The defrost heater melts frost from the freezer's evaporator fins. If the heater fails, frost builds up on the evaporator, resulting in warm freezer temperatures. If your defrost heater is defective, replace the heater with a manufacturer-approved refrigerator part.
This basic repair procedure works for Kenmore, Frigidaire, Whirlpool, KitchenAid, Maytag, Amana, GE, Samsung, LG, Gibson, Crosley and Haier top-freezer refrigerators.