773-024

This premium 2-stage air pressure switch is a critical safety component designed for high-efficiency gas furnaces and multi-stage HVAC systems. As an air-proving switch, it monitors the pressure differential created by the draft inducer motor to ensure the exhaust system is venting properly before allowing the ignition process to proceed. Featuring dual set points of -0.45" WC and -0.81" WC, it is specifically engineered to handle the varying airflow requirements of two-stage heating cycles. This component is essential for resolving furnace lockout issues, ignition failures, or pressure switch error codes, ensuring your residential heating system operates at peak safety and efficiency.
Type: Air Pressure Switch
Size: Small
Application: Used in multi-stage residential gas furnaces and high-efficiency heating units to monitor venting pressure and ensure safe combustion airflow.
Specifications: Two-stage operation; Low-stage set point: -0.45" WC; High-stage set point: -0.81" WC; Dual-diaphragm sensing; Snap-action electrical contacts.