773-391

Ensure the safe and efficient operation of your heating system with this premium Dual Port Pressure Switch. As a critical air proving component, this switch monitors the pressure differential created by the draft inducer motor, ensuring that exhaust gases are properly vented before the ignition sequence begins. Designed with a precise 0.71" WC (Water Column) activation point, it acts as a vital safety lockout mechanism to prevent furnace operation under improper venting or blocked flue conditions. This dual-port sensor is a common replacement part for HVAC systems experiencing ignition failure, frequent cycling, or pressure-related error codes. It offers a reliable, durable solution for maintaining optimal airflow and combustion safety in residential forced-air furnaces.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Specifically designed for use in residential gas furnaces and HVAC air handling units to monitor draft inducer airflow and ensure safe combustion sequences.
Specifications: Pressure Rating: 0.71" WC; Configuration: Dual Port; Function: Air Proving and Safety Lockout; Compatibility: Forced-air heating systems.