The Whirlpool W11546610 Refrigerator Defrost Heater provides heat to remove frost buildup from the evaporator area during the automatic defrost cycle. Designed for compatible refrigerator models, this electrical heating element is positioned near the evaporator coil and activates when the defrost system sends power to it. As the heater warms, it melts accumulated frost from the coil, ... https://www.hnkparts.com/w11546610-whirlpool-heater