Lennox 88K30 70/42F Defrost Thermostat /Sensor

The Lennox 88K30 is a Defrost Thermostat Sensor 70-42F, which is an essential part of HVAC systems especially the heat pumps for defrosting control. This is because it incorporates an outside temperature sensor that sets the defrost process when the temperature goes below 42 degrees F. This guarantees proper defrosting of the outdoor coil by turning on the defrost heater as and when it corrects ice buildup, for performance efficiency. That is designed to be used with heat pumps and helps to mitigate frost-related issues such as lower heating output and almost certain compressor damage.