773-205

This premium air pressure switch is a vital safety component for residential and commercial HVAC systems, specifically designed to monitor and prove proper airflow within a furnace's combustion chamber. As an essential air-proving sensor, it ensures that the inducer motor is generating sufficient draft to vent combustion gases safely before allowing the ignition sequence to begin. A failing pressure switch can cause furnace lockout or intermittent heating failures; replacing it with this high-precision 0.10" WC (Water Column) switch restores reliable operation and ensures your heating system meets safety standards. Engineered for durability and responsive performance, this switch helps prevent the accumulation of dangerous gases, making it a critical repair part for maintaining indoor air quality and heating efficiency.
Type: Air Pressure Switch
Size: Compact
Application: Forced-air furnaces, inducer motor draft sensing, and HVAC heating system safety monitoring.
Specifications: Pressure Setting: 0.10" WC (Water Column); Function: Air Proving and Safety Interlock; Type: Diaphragm-actuated sensing.