773-106

This American Standard/Trane Air Pressure Switch is a critical safety component designed for high-efficiency gas furnaces and HVAC systems. As an essential air proving switch, it monitors the negative pressure created by the draft inducer motor to verify that the venting system is clear and operational before allowing the ignition process to begin. Calibrated to a 1.29" WC (Water Column) set point, this switch protects your home by preventing the furnace from running if hazardous exhaust conditions or venting obstructions are detected. It is a reliable replacement part for troubleshooting heating systems that fail to ignite or shut down prematurely due to airflow issues, ensuring your heating equipment operates at peak safety and efficiency.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Used in residential gas furnaces and forced-air heating systems to monitor inducer motor performance and flue venting safety.
Specifications: 1.29" WC (Water Column) pressure rating; Air proving safety function; Compatible with select heating and cooling units.