773-357

This premium air pressure switch is a vital safety component for residential furnace and HVAC systems. Designed as a dual-port air proving switch, it accurately monitors the pressure differential produced by the draft inducer motor to ensure exhaust gases are being properly vented. With a precise 0.40" WC (Water Column) set point and a Single Pole Single Throw (SPST) configuration, this switch prevents the ignition sequence if unsafe venting conditions are detected. If your heating system is experiencing ignition failure or intermittent shut-offs, replacing a worn or faulty pressure switch can restore reliable performance and ensure safe operation. This high-quality replacement part is engineered for durability and consistent sensing in high-efficiency heating environments.
Type: Air Pressure Switch
Size: Small / Compact
Application: Residential gas furnaces, HVAC heating systems, and inducer motor safety monitoring.
Specifications: Dual port design, 0.40" WC set point, SPST (Single Pole Single Throw) contact configuration, air proving functionality.