York S1-024-35780-000 Pressure Switch

The York S1-024-35780-000 Pressure Switch is a critical safety component designed for precise HVAC draft inducer motor monitoring. This SPNO (Single Pole Normally Open) switch features a fixed set point of 1.0" WC (Water Column), engineered to close on a fall in pressure. As an authentic OEM York replacement part, it ensures exact calibration for residential furnaces and package units, maintaining the necessary pressure differential for safe combustion cycles. Technicians prioritize this furnace air pressure switch for its reliability in detecting venting obstructions or blower failures. Integrating this component into your HVAC preventative maintenance routine ensures the system adheres to original manufacturer specifications, preventing nuisance trips and ensuring consistent ignition sequences. The robust diaphragm construction handles standard differential pressure switch duties within high-efficiency heating systems, providing a durable solution for York furnace repair and system troubleshooting.

Key Benefits

• Precise Calibration: Factory-set at 1.0" WC to ensure furnace safety circuit integrity.
• SPNO Configuration: Reliable Close On Fall operation designed for specific York and Coleman sequences.
• Direct OEM Fit: Eliminates the need for universal mounting brackets or port adapters, reducing installation time.
• Durable Diaphragm: Engineered to withstand the thermal cycles of high-efficiency condensing furnaces.

Common Questions

How do I verify if the S1-024-35780-000 is the correct switch for my unit?
Confirm the pressure rating on the existing switch label matches 1.0" WC and verify the part number in the equipment's technical guide. This switch is a specific SPNO pressure switch and is not a universal substitute for switches with different set points.

What causes a furnace pressure switch to stay open?
Common issues include a restricted flue pipe, a failing inducer motor, cracked pressure tubing, or a compromised diaphragm within the switch itself. Always check for 1.0" WC of actual vacuum using a manometer before replacing the component.

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 accumulation in the pressure switch ports.

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.