{"product_id":"773-139","title":"773-139","description":"Ensure the safe and efficient operation of your heating system with this high-quality air pressure switch. Designed as a critical safety mechanism for gas-fired furnaces, this air proving switch monitors the pressure generated by the draft inducer blower to confirm proper venting of combustion gases before the ignition cycle begins. Calibrated to a precise 0.58\" WC (Water Column) set point, it prevents the furnace from operating under unsafe venting conditions. Ideal for resolving common 'no-heat' issues, ignition failure, or furnace startup errors, this durable component is essential for maintaining the reliability and safety of your residential HVAC system.\u003cbr\u003e\nType: Air Pressure Switch\u003cbr\u003e\nSize: Small\u003cbr\u003e\nApplication: Gas-fired residential furnaces and HVAC heating systems requiring draft inducer safety monitoring.\u003cbr\u003e\nSpecifications: 0.58\" WC (Water Column) trip point, air proving functionality","brand":"BCFurnace","offers":[{"title":"LENNOX PRESSURE SWITCH 0.58\" WC \/ 773-139","offer_id":47251313033501,"sku":null,"price":256.64,"currency_code":"CAD","in_stock":true},{"title":"LENNOX PRESSURE SWITCH 0.58\" WC \/ 49L92","offer_id":47251313066269,"sku":null,"price":256.64,"currency_code":"CAD","in_stock":true},{"title":"LENNOX PRESSURE SWITCH 0.58\" WC \/ 49L9201","offer_id":47251313099037,"sku":null,"price":256.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/104b9cdc479a4de69542e98f9356b45b.webp?v=1773958173","url":"https:\/\/bcfurnace.myshopify.com\/products\/773-139","provider":"BCFurnace","version":"1.0","type":"link"}