York S1-024-35271-000 Pressure Switch

The York S1-024-35271-000 Pressure Switch is a critical safety component designed for precise HVAC airflow monitoring in residential and light commercial equipment. This genuine York OEM part features a single pole, normally open (SPNO) contact configuration, engineered specifically for a close-on-fall switching action. Bench-rated at -0.5" WC, this switch ensures that your inducer motor or blower is generating the necessary static pressure before allowing the ignition sequence to proceed. As a direct furnace pressure switch replacement, it is frequently utilized across York, Coleman, and Luxaire platforms to maintain system integrity. Its compact design allows for straightforward integration into existing furnace cabinets or air handler control panels, providing a reliable solution for technicians troubleshooting pressure faults or intermittent combustion issues. By utilizing original factory specifications, this component helps prevent unsafe operation due to venting obstructions or fan failure.

Key Benefits:

• Direct OEM Compatibility: Verified as a drop-in replacement for York, Coleman, and Luxaire units using part number 024-35271-000.
• Precision Calibration: Factory-set for -0.5" WC (water column) to ensure accurate detection of vacuum or pressure drops.
• Switch Configuration: Reliable SPNO contacts provide clear signals to the integrated furnace control board.
• Enhanced System Safety: Prevents furnace ignition during loss of airflow or venting malfunctions.
• Durable Construction: Built for the high-temperature environment of furnace burner compartments.

Common Questions:

What causes a -0.5" WC pressure switch to stay open?
If the York S1-024-35271-000 fails to close, check for a restricted venting system, a failing inducer motor, or clogged pressure tap ports. Ensure the tubing is not cracked or saturated with condensate.

Can I use this switch in a universal HVAC application?
While technically an air pressure switch, it is calibrated specifically for systems requiring a close-on-fall action at a setpoint of -0.5" WC. Always verify that the WC rating and contact state match the manufacturer's original requirements.

How do I test the SPNO continuity on this part?
With the system off, the contacts should be open. Apply the rated vacuum while checking continuity across the terminals; the switch should close once the -0.5" WC threshold is reached.

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.