773-262

This high-performance two-stage air pressure switch is a critical safety component designed for high-efficiency gas furnaces. As an essential air proving switch, it monitors the pressure differential created by the inducer draft motor to ensure that the combustion process has proper venting and airflow before allowing the furnace to ignite. Specifically engineered for dual-stage heating systems, this switch features two precise setpoints to accommodate different firing rates, ensuring the HVAC system operates safely and efficiently. If your furnace is experiencing ignition failure or displaying pressure switch-related error codes, replacing a faulty switch is vital for restoring reliable climate control and home safety.
Type: Air Pressure Switch
Size: Small
Application: High-efficiency dual-stage gas furnaces and HVAC heating systems using induced draft blowers.
Specifications: Two-stage operation; Low-stage setpoint: -0.17" WC; High-stage setpoint: -0.7" WC; Safety-critical air proving functionality.