773-309

This Goodman Pressure Switch is a vital safety component designed for modern gas furnaces and HVAC systems. As an essential air proving switch, its primary function is to monitor the negative pressure generated by the draft inducer motor, ensuring that combustion gases are safely exhausted through the vent pipe. Rated at -1.50" WC (Water Column), this vacuum switch acts as a safeguard, preventing the furnace from entering the ignition cycle if it detects insufficient airflow or a blocked flue. Homeowners and technicians frequently seek this part when troubleshooting furnace startup failures or safety circuit interruptions. Built for reliability and precision, this switch ensures your heating system operates efficiently and safely during the cold season.
Type: Air Pressure Switch
Size: Small
Application: Commonly used in residential gas-fired furnaces and forced-air heating systems to verify proper venting and inducer blower operation.
Specifications: Pressure Rating: -1.50" WC; Type: Vacuum/Differential Pressure; Function: Normally Open Safety Interlock