York S1-024-35286-000 Pressure Switch

The York S1-024-35286-000 Pressure Switch is a critical OEM replacement component designed for precision monitoring of combustion and ventilation air pressure within HVAC systems. This SPNO (Single Pole Normally Open) switch is factory-calibrated to a -.9" WC (Water Column) setpoint, ensuring the control circuit closes only when the appropriate vacuum or draft is established. Engineered for high-reliability applications, this close on fall pressure switch effectively prevents ignition sequences if the inducer motor fails to produce sufficient airflow or if there is a restriction in the venting system.

For technicians servicing York, Coleman, or Luxaire equipment, this furnace pressure switch serves as a direct functional replacement for legacy part number 024-35286-000. Its compact form factor and standard wiring terminals facilitate rapid field installation, minimizing system downtime. By maintaining the integrity of the HVAC safety circuit, the York S1-024-35286-000 ensures that gas valves and ignition components only engage under safe, optimal draft conditions, protecting both the equipment and the structure from improper combustion cycles.

Key Benefits

• OEM Precision Calibration: Set to exactly -.9" WC for accurate sensing of inducer motor draft and venting pressure.
• Standard SPNO Logic: Features a Single Pole Normally Open configuration that reliably closes on a fall in pressure to complete the control loop.
• Broad Compatibility: A genuine York replacement part suitable for a wide range of furnace and air handling units requiring specific vacuum activation.
• Rugged Construction: Built to withstand the temperature fluctuations and vibration common in furnace burner compartments.

Common Questions

• What does "Close On Fall" mean for this switch? It indicates that the electrical contacts will close (connecting the circuit) when the negative pressure (vacuum) reaches the specified setpoint of -.9" WC, signifying sufficient airflow has been achieved.
• Can I use this switch as a substitute for a higher or lower WC rating? No. Pressure switches must match the manufacturer’s specified WC rating to ensure the system operates safely and avoids nuisance tripping or hazardous combustion.
• Is this switch compatible with 2-hose or 1-hose systems? The S1-024-35286-000 is designed to replace specific York OEM switches; always verify your existing hose configuration and terminal locations before installation.

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.