Lennox 72L27 Thermostat 320788-703 Manufactured by Ranco (part number

Manufactured by Ranco (part number V12-4220T0-2CA)

Working in the field

What is the maximum temperature the sensor can withstand

Does the valve ship in the open or closed position

Lennox 72L27 Thermostat 320788-703 Manufactured by Ranco (part numberThe Lennox 72L27 Defrost Thermostat is a critical safety and performance component designed for precise temperature regulation in Lennox heat pump systems. This heavy duty bimetal defrost sensor functions by monitoring coil temperatures and initiating the defrost cycle once frost accumulation reaches specific thresholds, typically closing at 42F and opening at 75F. Engineered for longevity in harsh outdoor environments, the 72L27 ensures the outdoor