The Traulsen 329-60021-50 Refrigerator Defrost Heater works to stop ice formation by warming up the evaporator coil during defrost mode. The heater component keeps the refrigerator running efficiently by stopping frost buildup that blocks air movement. The heater operates reliably at its rated power of 115V/750W. This heater unit installs quickly which makes it suitable for fixing or replacing refrigeration system components. This defrost heater works in all types of refrigeration units to make them run better and prevent disruptions in cooling.