Reznor 112107 Pressure Switch

The Reznor 112107 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high-efficiency heating systems. This SPST pressure switch features a 1/4" barb connection, ensuring a reliable interface with sensing lines to detect proper blower operation. Engineered for compatibility with specific Reznor unit heaters and power-vented equipment, it monitors the pressure differential across the heat exchanger, preventing ignition if a flue blockage or inducer failure occurs. As an OEM-spec HVAC air pressure switch, it maintains tight calibration tolerances essential for the sequence of operation in industrial and commercial forced-air units. When troubleshooting a furnace pressure switch failure, verify that the diaphragm actuation matches the factory-set inches of water column (WC) to ensure system reliability and code compliance.

• Direct OEM Replacement: Designed specifically for Reznor heating systems to ensure seamless mechanical and electrical integration.
• Enhanced Durability: Robust diaphragm construction resists cyclic fatigue and ensures accurate pressure switch calibration over the life of the equipment.
• Precise Sensing: The 1/4" hose barb provides a secure, leak-proof seal for vacuum or positive pressure monitoring.
• System Protection: Critical safety interlock that prevents the burner from firing under unsafe venting conditions.

What are the symptoms of a faulty Reznor pressure switch?
Common indicators include the inducer motor running continuously without ignition or receiving a pressure switch stuck open fault code on the ignition control board.

Can I use a generic adjustable switch instead of the 112107?
For HVAC part compatibility, it is always recommended to use the specified OEM pressure switch to match the exact set point required for safe flue gas venting.

How do I test this pressure switch during a service call?
Use a multimeter to check for continuity across the SPST terminals and a manometer to verify the switch closes at the manufacturer's specified pressure rating.

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.