For contractors handling field repairs

making it a primary choice for technicians conducting field replacements

maintaining a leak-proof seal on critical boiler water feeders is non-negotiable

preventing rapid cycling and protecting the burner assembly from thermal fatigue

47-24006-09

York S1-024-40873-000 Pressure Switch For contractors handling field repairsThe York S1 024 40873 000 Pressure Switch is a critical safety component engineered for precise airflow monitoring in modern HVAC systems. Designed with a 0. 85" WC setpoint, this SPNO (Single Pole Normally Open) switch utilizes a "Close On Fall" logic to confirm the inducer motor is moving exhaust gases safely through the vent system. As a direct OEM replacement for S1 024 35786 000, it ensures factory spec calibration and timing for sequence of