helping technicians prevent acid formation and compressor motor burnout

reducing the need for additional capillary tubes or complex bracketry

this is the current manufacturer-specified replacement for the B1037485

Optimized Drainage: Smooth internal radius reduces surface tension to prevent condensate backup

Lennox 63W57 Pressure Switch Els PW 17895 helping technicians prevent acid formationThe Lennox 63W57 Pressure Switch is a critical genuine OEM component engineered for precise furnace diagnostic monitoring. This SPST furnace pressure switch is factory calibrated with a 0. 55 . 95" WC pressure rating, ensuring the inducer motor provides sufficient draft for safe combustion. As a direct replacement for Lennox 56M22, the 63W57 eliminates compatibility guesswork during emergency service calls. It functions as a safety interlock,