Description
The York S1-024-35271-000 is a genuine OEM air/pressure switch designed for HVAC and furnace systems, engineered to monitor airflow and pressure conditions — helping ensure safe and efficient operation of heating, cooling, and ventilation equipment. It’s built to meet original manufacturer specifications and is widely used as a direct replacement part in York, Coleman, and Luxaire furnace and air-handler units.
Key Features
- Genuine OEM Part – Manufactured by York to match original system specifications for reliable, long-term performance.
- Air / Pressure Switch Functionality – Monitors air pressure (or vacuum) in HVAC systems to help verify correct airflow before allowing system operation.
- SPNO (Single Pole, Normally Open) Contact Configuration – Switch is “normally open,” closing when pressure drops to trigger system response.
- Close-On-Fall at –0.5″ WC – Activates when pressure falls to –0.50 inches water column (WC), making it ideal for detecting loss of airflow or vacuum drop.
- Airflow & Safety Control – Helps ensure inducer motors or fans are operating properly; prevents furnace ignition or system operation when airflow conditions are unsafe.
- Direct Replacement / Fit for Many Units – Compatible as a drop-in replacement for many York, Coleman, and Luxaire air-handlers, furnaces, and HVAC systems that use part number 024-35271-000.
- Compact & Easy to Install – Compact form factor suitable for installation in furnace cabinets, air handlers, or duct control panels, simplifying maintenance or repair tasks.






