773-208

This professional-grade dual pressure switch is a critical safety and performance component designed for high-efficiency, multi-stage gas furnaces. Functioning as an air-proving switch, it monitors the pressure generated by the draft inducer motor to ensure the system is venting correctly before allowing the heating cycle to begin. This dual-stage design is specifically engineered to handle both high-fire and low-fire operation modes, providing precise sensing for modern multi-stage HVAC systems. By detecting pressure fluctuations, it protects your home by preventing the furnace from operating under unsafe conditions, such as blocked vents or inducer motor failure. This part is ideal for HVAC technicians and homeowners looking to restore reliable operation and safety to their residential heating equipment.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: High-efficiency multi-stage gas furnaces, residential HVAC systems, and draft inducer motor air-proving applications.
Specifications: Dual Stage Functionality; High Fire Break: 0.27" WC (0.42" WC Max); Low Fire Break: 0.14" WC (0.33" WC Max)