York S1-024-35263-000 Pressure Switch

The York S1-024-35263-000 Pressure Switch is a critical safety component engineered for HVAC furnace systems, specifically designed to monitor induced draft and ensure the inducer motor is creating sufficient negative pressure before the ignition sequence begins. This genuine OEM part serves as a direct upgrade for various York, Coleman, and Luxaire furnace models, featuring a precise -1.45" WC (Water Column) trip point to maintain airtight safety standards and prevent hazardous exhaust leaks. Utilizing a Single-Pole Single-Throw (SPST), normally open (SPNO) electrical configuration, the switch closes on a fall in pressure, completing the circuit to the control board once the appropriate vacuum is established through the 1/4 inch barbed connection.

For technicians troubleshooting a furnace not igniting, this 024-35263-000 pressure switch is a 1-pole solution that replaces legacy part numbers including 209A18. Its barbed hose port allows for a secure, leak-free fit to existing silicone or rubber tubing. Rated for 15 amps at 125/250 VAC, this air pressure switch provides the high-reliability response required for residential gas furnaces, ensuring the combustion process only occurs when the flue is properly evacuated.

• OEM Precision: Guaranteed compatibility with York, Coleman, and Luxaire equipment to eliminate mounting and wiring guesswork.
• Safety Monitoring: Prevents furnace ignition if a clogged vent or failed inducer is detected, protecting against carbon monoxide rollout.
• Standardized Fit: Features 1/4" barbed connections and two electrical terminals for seamless integration with universal wiring harnesses.
• Durable Construction: Built with a high-strength diaphragm to withstand constant cycling and temperature fluctuations within the furnace cabinet.

• How do I test if my pressure switch is failed? Use a manometer to verify the inducer is pulling at least -1.45" WC. If the vacuum is correct but the SPST switch shows an open circuit with a multimeter, the internal diaphragm or contacts have likely failed.
• Will this switch work if my inducer motor is running? Yes, the inducer must be operational to create the suction required to close the switch. If the inducer is weak or the vent pipe is obstructed, the switch will remain open as a safety precaution.
• What does the -1.45" WC rating mean? This is the specific pressure threshold at which the switch activates. Using a switch with a different rating than the original can lead to frequent short cycling or dangerous operation.

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.