York S1-024-35276-000 Pressure Switch

The York S1-024-35276-000 Pressure Switch is a critical safety component designed for precise pressure monitoring in PT8 2-Stage Downflow/Horizontal Natural Gas Furnaces. This SPNO Pressure Switch (Single Pole Normally Open) is engineered to sense the static pressure generated by the inducer motor, ensuring that the exhaust path is clear and the combustion blower is performing at a sufficient RPM before allowing the ignition sequence to proceed. As a genuine HVAC OEM replacement part, it provides exact calibration for York, Coleman, and Luxaire systems, maintaining the narrow differential required for multi-stage heating equipment.

For service technicians, the S1-024-35276-000 offers a direct-fit solution that eliminates the troubleshooting headaches of universal alternatives. With setpoints typically rated around -0.15/-0.35" WC (water column), this atmospheric sensing device is built to withstand the high-cycle demands of modern furnace draft inducer circuits. Utilizing a York pressure control switch ensures that your HVAC system safety protocols remain intact, preventing the dangerous buildup of flue gases and ensuring optimal fuel efficiency during both low and high-fire operation cycles.

• Precision Calibration: Factory-set for 2-stage York furnace systems to ensure accurate draft detection and reliable ignition.
• Direct OEM Compatibility: Specifically designed to replace faulty switches in York, Coleman, and Luxaire furnaces without modification.
• SPNO Configuration: Reliable Single Pole Normally Open switching logic for seamless integration with the furnace control board.
• Durable Construction: High-grade diaphragm material provides consistent performance under varying temperature and moisture conditions.
• Enhanced System Safety: Critical for monitoring flue draft to prevent incomplete combustion or carbon monoxide leakage.

What are the symptoms of a failing furnace pressure switch?
A faulty switch often causes the furnace to cycle or fail to ignite, frequently displaying a "3-flash" or "Open Pressure Switch" error code on the control board despite the inducer motor running. Verification with a manometer is recommended to confirm if the inducer is pulling enough vacuum or if the switch has failed internally.

Will this pressure switch work with any 2-stage natural gas furnace?
While this part is common in PT8 series equipment, pressure switches are calibrated to specific WC (Water Column) ratings. You must match the part number S1-024-35276-000 exactly to ensure the furnace operates within the manufacturer's specified safety parameters.

Does this switch require professional installation?
Yes, adjusting or replacing safety controls should be performed by a licensed HVAC technician to ensure correct vacuum line routing and electrical termination, as improper installation can lead to equipment damage or safety hazards.

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.