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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
This Johnson Controls pneumatic thermostat is sold as the internal mechanism only
replacing with an OEM 311213-403 restores factory-spec durability
Serviceable Design: Modular approach allows for easy replacement of internal components without removing the entire body
Technicians will find the adjustable superheat setting critical for fine-tuning system efficiency across varying evaporator loads
Lennox 65W84 Switch 319825-402 This Johnson Controls pneumatic thermostatThe 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