Lennox 14W86 Defrost Thermostat

The Lennox 14W86 Defrost Thermostat is an essential part of Lennox HVAC systems particularly those of refrigerator and freezer types. This small but essential device ensures the checking of temperature within the appliance and controls the process of defrosting. When the temperature on the evaporator coil falls to a certain level, the defrost thermostat turns on the defrost heater. This heater also removes any frost on the coils so that airflow is not restricted and cooling potential is not lessened.