773-366

Ensure the safety and efficiency of your heating system with this high-performance air pressure switch. Specifically designed for HVAC applications, this air proving switch monitors the negative pressure created by the inducer fan to confirm proper venting before allowing the furnace to ignite. Rated at a precise 0.85" WC (Water Column), it serves as a critical fail-safe, preventing the operation of the heating unit if a blockage or mechanical failure is detected in the exhaust system. This replacement component is essential for troubleshooting furnace startup issues and maintaining reliable indoor climate control in residential or commercial settings.
Type: Air Pressure Switch
Size: Standard
Application: Used in forced-air furnaces and HVAC systems to monitor combustion air flow and inducer motor performance.
Specifications: Pressure Rating: 0.85" WC (Water Column); Function: Air Proving/Safety Cut-off; Compatibility: York and ETC-style heating units.