100-147

This premium gas pressure switch is a critical safety component designed for high-efficiency HVAC systems and gas heating units. Often referred to as an air proving switch or draft inducer switch, its primary function is to monitor the pressure generated by the inducer motor to ensure proper venting of combustion gases. By verifying that adequate airflow exists before allowing the ignition sequence to begin, this switch prevents the buildup of hazardous fumes. If your furnace or rooftop unit is failing to ignite or shutting down shortly after startup, a malfunctioning air pressure switch is a common culprit. This durable replacement part is engineered for precision and reliability, ensuring your heating system operates safely and efficiently throughout the season.
Type: Air Pressure Switch / Air Proving Switch
Size: Compact
Application: Used in residential and commercial gas heating systems, packaged gas/electric rooftop units, and forced-air furnaces to monitor draft inducer blower performance.
Specifications: Pressure-sensitive safety mechanism; designed to detect vacuum or positive pressure to enable or disable the ignition circuit.