{"product_id":"773-399","title":"773-399","description":"This professional-grade air pressure switch is a critical safety component designed for HVAC systems and gas furnaces. Often referred to as an air-proving switch, it monitors the pressure differential created by the inducer blower motor to ensure the system is venting combustion gases safely. With a precision-calibrated set point of 0.18\" WC (Water Column), this switch acts as a safeguard, preventing the ignition sequence if proper airflow is not detected. If your heating system is failing to ignite or shutting down prematurely, a replacement pressure switch may be required to restore safe and efficient operation. This component is built for durability and high-cycle reliability in residential and commercial heating equipment.\u003cbr\u003e\nType: Air Pressure Switch\u003cbr\u003e\nSize: Small Component\u003cbr\u003e\nApplication: Used in gas-fired furnaces, rooftop package units, and light commercial heating systems to verify proper airflow and exhaust ventilation.\u003cbr\u003e\nSpecifications: Pressure Set Point: 0.18\" WC (Water Column); Function: Air Proving and Safety Cut-off.","brand":"BCFurnace","offers":[{"title":"PRESSURE SWITCH 0.18\" WC \/ 773-399","offer_id":50572939329821,"sku":null,"price":98.58,"currency_code":"CAD","in_stock":true},{"title":"PRESSURE SWITCH 0.18\" WC \/ HK06MB061","offer_id":50572939362589,"sku":null,"price":98.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/bf8056e6babf455fa736c270054e56ed.webp?v=1773965956","url":"https:\/\/bcfurnace.myshopify.com\/products\/773-399","provider":"BCFurnace","version":"1.0","type":"link"}