Lennox 36W49 Pressure Switch 326058-755 which often indicates stem scoring

which often indicates stem scoring or deformation

it is typically factory-set at 25 psi

and Payne gas-fired furnaces and water heaters

it indicates an underlying thermal issue that must be diagnosed and repaired

Lennox 36W49 Pressure Switch 326058-755 which often indicates stem scoringThe Lennox 36W49 Pressure Switch is a critical safety component designed for specific Lennox furnace models to monitor the negative pressure generated by the inducer motor. This SPST furnace pressure switch is factory calibrated to a 0. 55" WC set point, ensuring the combustion process only initiates when proper venting and drafting are established. Constructed with a durable diaphragm and high grade electrical contacts, this direct replacement