Lennox 57W79 Pressure Switch Broad Compatibility: Direct replacement for

Broad Compatibility: Direct replacement for Rheem

Will this work as a door interlock switch

Robertshaw

Durable Construction: Manufactured from high-grade metal to withstand the thermal stress of continuous pilot operation in liquid propane systems

Lennox 57W79 Pressure Switch Broad Compatibility: Direct replacement forThe Lennox 57W79 Pressure Switch is a critical OEM safety component engineered for precise inducer draft monitoring in Lennox gas furnaces. Calibrated to a 0. 70" WC activation setpoint, this green pressure switch ensures the combustion blower is establishing sufficient static pressure before allowing the ignition sequence to proceed. As a direct furnace pressure switch replacement, it resolves common fault codes related to airflow verification and