773-319

This high-quality Carrier Pressure Switch is a critical safety component designed for residential and commercial heating systems. As an air proving switch, its primary function is to monitor the negative pressure generated by the draft inducer motor, ensuring that the furnace's exhaust vent is clear and airflow is sufficient for safe combustion. If the sensor detects a venting issue or pressure imbalance, it prevents the ignition process to protect the system and the home. This durable air pressure sensor is an essential replacement part for troubleshooting furnace startup failures or resolving issues with intermittent heating. Built for reliability and precision, it helps maintain the peak performance and safety of your HVAC equipment.
Type: Air Pressure Switch
Size: Compact
Application: Used in gas-fired furnaces and HVAC units to verify inducer motor performance and flue pipe clearance before allowing the ignition sequence to begin.
Specifications: Single-pole, single-throw (SPST) switch; designed to sense negative air pressure; includes vacuum port and electrical terminals for easy integration into the furnace control circuit.