York S1-1PS0309 Pressure Switch Els PW 17895 Ensure the arrow points toward

Ensure the arrow points toward the expansion device (TXV/piston)

This kit is specifically designed for non-condensing

electric heat elements

it ensures direct compatibility with existing logic boards without the scaling errors often found in generic sensors

York S1-1PS0309 Pressure Switch Els PW 17895 Ensure the arrow points towardThe York S1 1PS0309 Pressure Switch is an OEM specified safety component engineered for high altitude gas furnace installations. This SPST pressure switch is calibrated to a fixed setpoint of 0. 90" WC (water column), ensuring the inducer motor maintains the critical vacuum thresholds necessary for safe flue gas venting in low density air environments. Designed for precise atmospheric monitoring, this switch replaces standard units to prevent nuisance