York S1-024-25808-702 Pressure Switch

The York S1-024-25808-702 Pressure Switch is a critical safety component designed for precise vent pressure monitoring in residential and commercial York HVAC systems. Engineered as a SPST (Single Pole Single Throw) normally open switch, this unit features a factory-calibrated set point of -0.60" WC. It serves as an essential watchdog for the combustion process, ensuring the draft inducer motor is moving sufficient air across the heat exchanger before allowing the ignition sequence to proceed. This genuine OEM replacement for the 024-25808-002 ensures a perfect fit and maintains the original safety ratings of your furnace or gas-fired equipment.

For field technicians, the York S1-024-25808-702 offers a simplified installation with its standard 1/4" barbed connection, allowing for a secure seal with existing vacuum tubing. Its robust internal diaphragm is built to withstand high-cycle operations, preventing common nuisance trips often found with generic aftermarket switches. Using an authentic York replacement part preserves the system's operational integrity, reduces the risk of carbon monoxide hazards due to venting failure, and avoids the compatibility issues associated with universal pressure controls.

Key Benefits for Contractors

• Direct OEM Compatibility: Engineered specifically for York systems to ensure accurate -0.60" water column sensing without readjustment.
• Enhanced Safety Logic: Reliable SPST switching prevents ignition if the draft inducer or venting system is obstructed.
• Simplified Service: Heavy-duty 1/4" barbed vacuum port and standard spade terminals allow for rapid, "drop-in" replacement during service calls.
• Long-Term Reliability: High-grade materials resist fatigue and environmental stress, ensuring stable performance in gas-fired heating environments.
• Fault Protection: Actively monitors for negative pressure drops to prevent hazardous combustion conditions and equipment overheating.

Common Questions About the S1-024-25808-702

Can I use this switch if my old part number is 024-25808-002?
Yes, the York S1-024-25808-702 is the direct OEM replacement for the legacy 024-25808-002 part number, featuring identical specifications and mounting footprints.

What are the symptoms of a failing pressure switch?
Common indicators include the furnace inducer motor running continuously without ignition, "pressure switch stuck open" fault codes on the control board, or the system short-cycling during the startup phase.

Is the set point adjustable on this model?
No, this unit is factory-calibrated at -0.60" WC to meet specific York safety requirements. Attempting to adjust the set point on a fixed-pressure switch can compromise system safety.

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.