773-259

This genuine replacement air pressure switch is a vital safety component for high-efficiency gas furnaces. Designed for specific heating systems, this air proving switch monitors the internal vacuum created by the inducer motor to ensure proper venting of combustion gases before the ignition cycle begins. If the system detects inadequate airflow or a blockage in the flue, the switch remains open, preventing the furnace from firing and ensuring home safety. This vacuum switch is essential for troubleshooting common HVAC issues such as a furnace failing to ignite or a system stuck in a startup loop. Built for precision and durability, it features a calibrated setpoint of -0.10" WC to maintain peak performance and reliable heating during cold weather.
Type: Air Pressure Switch
Size: Compact
Application: Used in residential gas furnaces and HVAC heating units to verify proper inducer blower operation and flue gas venting.
Specifications: Pressure Setting: -0.10" WC; Type: Air Proving/Vacuum Switch; Circuit: Normally Open (N/O)