York S1-024-35929-000 Pressure Switch

The York S1-024-35929-000 Pressure Switch is a critical safety component designed for precise HVAC airflow monitoring in high-efficiency systems. Calibrated to a 0.15" WC set point, this SPNO (Single Pole Normally Open) switch is engineered to close on a fall in pressure, ensuring the draft inducer has established a proper vacuum before allowing the ignition sequence to proceed. As the direct replacement for 024-35812-000, this OEM part maintains factory-spec timing and sensitivity, which is vital for preventing nuisance lockout codes in modulating gas furnaces and air handlers.

Field technicians often encounter "pressure switch stuck open" errors due to failing diaphragms or scaled-out draft inducer assemblies. Replacing with the S1-024-35929-000 furnace pressure switch restoration of the combustion safety circuit and ensures the system operates within its original efficiency parameters. The compact mounting footprint and standard 3/16" or 1/4" hose connections facilitate a fast swap during service calls. When diagnosing venting issues, verified .15 inches of water column activation is mandatory to meet York OEM specifications and maintain safe combustion cycles.

• OEM Compatibility: Serves as the factory-authorized direct replacement for 024-35812-000, eliminating fitment guesswork.
• Precision Calibration: Factory-set at 0.15" WC to ensure accurate draft inducer pressure sensing and safety circuit integrity.
• SPNO Logic: Features a Single Pole Normally Open configuration that closes on fall, essential for modern York HVAC safety.
• Durable Construction: Built to withstand the high-temperature environment of the inducer motor housing.
• Versatile Application: Primarily used in modulating furnace units where precise incremental pressure signals are required.

• Will this fix a "Pressure Switch Stuck Open" error? If the inducer is pulling a proper vacuum but the circuit remains open, this 0.15" WC pressure switch is the standard solution to restore operation.
• Can I use this for non-modulating furnaces? This part is specifically calibrated for modulating units; always verify the WC set point on the existing switch label before installation.
• Does this include the vacuum tubing? This is the switch assembly only; it is recommended to inspect and reuse or replace existing silicone vacuum hoses to ensure no leaks.

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.