York S1-2940-3151 Pressure Switch Els PW 17895 ensuring the pressure drop across

ensuring the pressure drop across the liquid line and evaporator remains within strict factory tolerances

this transformer simplifies wiring while meeting strict safety standards for general-purpose industrial use

preventing leakage and ghost energy consumption in hydronic systems

maintaining consistent system CFM

large-gauge copper tubing

York S1-2940-3151 Pressure Switch Els PW 17895 ensuring the pressure drop acrossThe York S1 2940 3151 Pressure Switch is a critical safety component designed for specific York, Luxaire, and Coleman gas fired furnaces. Calibrated to a . 3" WC set point, this SPST (Single Pole Single Throw) normally open switch monitors the pressure differential created by the inducer motor to ensure proper venting before the ignition sequence begins. It serves as a direct OEM replacement for older York furnace pressure switches, maintaining the