York S1-2940-3151 Pressure Switch Els PW 17895 the BQC-AA designation specifically denotes

the BQC-AA designation specifically denotes the port sizing and capacity range within the BQ valve family

ensuring that every interface is sealed against vacuum leaks and oil migration

Always match the OEM Lennox 20J83 specs

The Wayne Combustion 62391-002 Electrode F/HSG is a critical oil burner ignition component engineered specifically for technical compatibility with HSG Series housings

OEM Compatibility: Direct fit for York

York S1-2940-3151 Pressure Switch Els PW 17895 the BQC-AA designation specifically denotesThe 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