{"product_id":"773-357","title":"773-357","description":"This premium air pressure switch is a vital safety component for residential furnace and HVAC systems. Designed as a dual-port air proving switch, it accurately monitors the pressure differential produced by the draft inducer motor to ensure exhaust gases are being properly vented. With a precise 0.40\" WC (Water Column) set point and a Single Pole Single Throw (SPST) configuration, this switch prevents the ignition sequence if unsafe venting conditions are detected. If your heating system is experiencing ignition failure or intermittent shut-offs, replacing a worn or faulty pressure switch can restore reliable performance and ensure safe operation. This high-quality replacement part is engineered for durability and consistent sensing in high-efficiency heating environments.\u003cbr\u003e\nType: Air Pressure Switch\u003cbr\u003e\nSize: Small \/ Compact\u003cbr\u003e\nApplication: Residential gas furnaces, HVAC heating systems, and inducer motor safety monitoring.\u003cbr\u003e\nSpecifications: Dual port design, 0.40\" WC set point, SPST (Single Pole Single Throw) contact configuration, air proving functionality.","brand":"BCFurnace","offers":[{"title":"LENNOX PRESSURE SWITCH DUAL PORT 0.40\" WC, SPST \/ 773-357","offer_id":50568416035101,"sku":null,"price":166.64,"currency_code":"CAD","in_stock":true},{"title":"LENNOX PRESSURE SWITCH DUAL PORT 0.40\" WC, SPST \/ 12L46","offer_id":50568416067869,"sku":null,"price":166.64,"currency_code":"CAD","in_stock":true},{"title":"LENNOX PRESSURE SWITCH DUAL PORT 0.40\" WC, SPST \/ 12L4601","offer_id":50568416100637,"sku":null,"price":166.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/87c2fb1f41bd4cec9214c1be9d0eb316.webp?v=1773960171","url":"https:\/\/bcfurnace.myshopify.com\/products\/773-357","provider":"BCFurnace","version":"1.0","type":"link"}