York S1-024-35707-000 Pressure Switch

The York S1-024-35707-000 Pressure Switch is a critical safety component designed for precise furnace pressure switch testing and operation within York, Luxaire, and Coleman HVAC systems. This SPNO (Single Pole Normally Open) air pressure sensing switch is factory-calibrated to a .20" WC setpoint, ensuring the inducer motor establishes a proper draft before allowing the ignition sequence to proceed. Engineered for high-reliability in residential heating applications, this HVAC draft inducer switch monitors differential pressure to prevent unsafe combustion conditions caused by blocked flues or failing motors. The compact design allows for direct replacement in York furnace parts lineups, maintaining OEM specifications for diaphragm sensitivity and electrical contact integrity. For technicians performing furnace pressure switch troubleshooting, this component ensures the system adheres to strict safety protocols by verifying airflow vacuum levels. Utilizing a durable housing and precise calibration, it replaces multiple legacy part numbers to restore efficient system performance and prevent nuisance pressure switch lockout codes.

Key Benefits for Technicians

• Precision Calibration: Pre-set to .20" WC for accurate sensing of low-pressure thresholds in high-efficiency systems.
• OEM Compatibility: Exact York S1-024-35707-000 replacement ensures proper fitment and terminal alignment without field modifications.
• Reliable Switching: SPNO contact configuration provides consistent signals to the integrated furnace control board.
• Critical Safety Integration: Monitors inducer draft to prevent the operation of the burner under restricted airflow conditions.

Common Installation Questions

What causes a pressure switch to stay open?
An open switch usually indicates a blocked vent pipe, a failing inducer motor, or a cracked heat exchanger. Always check for obstructions in the flue or moisture buildup in the pressure tubing before replacing the switch.

Can this switch be used in horizontal furnace orientations?
Yes, provided the switch is mounted according to the manufacturer's orientation requirements to prevent moisture from collecting on the diaphragm.

Does this switch include the mounting bracket?
This part features the standard integrated mounting flange consistent with York replacement parts for streamlined installation on the inducer housing or furnace cabinet.

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.