Description
Maintain safe and efficient operation of your HVAC or furnace system with the genuine ¬OEM York S1-024-39716-000 Pressure Switch. Engineered to monitor negative pressure (vacuum) in ventilation and combustion circuits, this reliable switch ensures your system only operates under correct airflow and draft conditions — reducing risk of malfunction, back-drafting, or unsafe operation.
Key Features
- OEM-certified part: Designed and manufactured by York — ensures perfect fit, reliable operation, and compatibility with select York-built furnaces, boilers, or air-handling units.
- Precision pressure setting: Calibrated to trigger at –0.20″ WC (water-column) — ideal for low-flow gas furnaces, boilers, and other HVAC units that rely on negative-pressure detection for safe ignition or blower control.
- Safety & performance: Activates or interrupts electrical control circuitry based on air-pressure conditions — helping prevent dangerous combustion when venting or airflow is inadequate.
- Compact and easy to install: Compact switch body and standard HVAC connections enable straightforward replacement for technicians or experienced DIYers.






