or a hairline crack in the ceramic insulator

it is strictly designed for 50PQ series units and specific Bryant/Payne crossovers

5" x 4" mounting dimensions

ensuring seamless valve stem and orifice alignment during reassembly

Lennox 65W84 Switch 320720-756 or a hairline crack inThe Lennox 65W84 Thermostat Switch Freezestat is a critical safety component designed for freeze protection in residential and commercial HVAC applications. As a genuine OEM Lennox replacement part, this SPST (Single Pole Single Throw) switch monitors evaporator coil temperatures to prevent ice accumulation and potential compressor damage. Engineered for precision, the 65W84 activates by opening the circuit at 29F to interrupt cooling and closes at