000-816

This high-performance Airswitch Safety Interlock Pressure Switch is a critical safety component designed for modern gas furnaces and heating systems. Functioning as an air-proving switch, it monitors the draft created by the inducer fan motor to ensure proper ventilation of combustion gases before the ignition sequence begins. Featuring a Single Pole Single Throw (SPST) configuration that is Naturally Open (NO), the switch closes its contacts once the required pressure threshold is reached, signaling the furnace control board that it is safe to proceed with heating. If your HVAC system is failing to ignite or displaying a pressure switch lockout error, this reliable replacement part is essential for restoring safe and efficient operation. Engineered for precision and durability, it serves as a vital safeguard against venting failures, blocked flues, and restricted airflow.
Type: Air Pressure Switch
Size: Standard HVAC component
Application: Used in forced-air gas furnaces and HVAC heating systems as a safety interlock to verify inducer motor operation and proper venting.
Specifications: Single Pole Single Throw (SPST) circuitry, Normally Open (NO) contacts, Air-proving safety functionality.