York S1-024-35776-000 Pressure Switch

As a seasoned technician, you know that a failed inducer draft is the most common cause of no-heat calls. The York S1-024-35776-000 Pressure Switch is the genuine OEM replacement specifically calibrated for York, Coleman, and Luxaire gas furnaces. This air pressure sensor features a Single Pole Normally Open (SPNO) configuration and is engineered with a precise -.40" WC setpoint that closes on pressure fall. It serves as a critical safety limit, verifying that the inducer motor is pulling the necessary vacuum to exhaust flue gases safely before the ignition sequence begins. Designed for high-cycle reliability in residential and light commercial equipment, this Source1 pressure control replaces legacy part numbers 024-35776-000 and ensures your combustion system maintains its AHRI-rated efficiency without nuisance trips.

Key Maintenance Benefits:

• Precision Calibration: Factory-set at -.40" WC to ensure the combustion blower is operating at the correct RPM and vacuum pressure.
• OEM Reliability: Direct fit for multiple York, Coleman, and Luxaire furnace models, including the GG9S and MG9S series.
• Safety Optimized: The SPNO close on fall logic prevents gas valve activation if the venting system is obstructed or the draft is insufficient.
• Contactor-Grade Construction: Built to withstand the high-temperature environment of the furnace burner vestibule.
• Prop 65 Compliance: Contains necessary California state safety warnings regarding material composition.

Common Contractor Questions:

What are the symptoms of a faulty S1-024-35776-000 switch?
If the furnace inducer motor runs but the igniter never glows, the pressure switch is likely stuck open or failing to sense the -.40" WC vacuum. Use a manometer to verify the draft before replacing the switch.

Will this switch replace a dual-port vacuum sensor?
This model is a single-port air pressure switch. If your unit requires a dual-port differential switch, verify the specific WC rating and part number to ensure proper safety circuit integration.

Is this compatible with 80% and 90%+ AFUE units?
Yes, this genuine York furnace part is commonly found in both standard and high-efficiency condensing units. Always cross-reference your specific model's parts list to confirm the -.40" WC requirement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.