Description
The York S1-024-35707-000 is an OEM replacement Single Pole Normally Open (SPNO) pressure switch engineered to exacting York specifications. Calibrated to a 0.20″ water column (WC) setpoint, this switch is designed to verify proper combustion air pressure and draft inducer operation before allowing furnace ignition to proceed — a critical safety function in modern gas furnace systems.
How It Works
As a normally open (NO) device, this pressure switch remains open at rest and closes only when the sensed negative pressure meets or exceeds the 0.20″ WC threshold. This confirms that the draft inducer motor is running and the flue pathway is clear, protecting against unsafe combustion conditions and potential carbon monoxide hazards.
Key Features
- OEM York replacement part — direct fit for compatible York equipment
- Single Pole Normally Open (SPNO) configuration
- 0.20″ water column (WC) pressure setpoint
- Monitors draft inducer operation and combustion air proving
- Helps prevent ignition under unsafe flue or venting conditions
- Precision-calibrated for reliable, repeatable switching performance
- Durable construction built to withstand the demands of residential and light commercial HVAC environments
Application
This pressure switch is a direct OEM replacement for select York gas furnace models. Always verify compatibility with your specific unit’s model and serial number before installation. Consult the equipment service manual for wiring diagrams and setpoint verification procedures.
Why Choose OEM York Parts?
Using genuine York replacement components ensures proper fit, function, and system safety. OEM parts maintain the integrity of the original equipment design and help protect equipment warranties.
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