{"product_id":"121-271","title":"121-271","description":"This high-performance Air Pressure Switch is a critical safety component designed for residential gas furnaces and HVAC systems. Functioning as an air proving switch, it ensures the inducer fan is creating sufficient airflow and proper venting before allowing the ignition sequence to proceed. By monitoring the internal pressure of the furnace, this switch prevents the system from operating under unsafe conditions, such as a blocked flue or a failing draft inducer. It is an ideal replacement part for troubleshooting heating systems that fail to ignite or show pressure switch error codes. Built for reliability and precision, this 0.55 IWC pressure switch helps restore efficient heating performance and maintains the safety standards of your forced-air system.\u003cbr\u003e\nType: Air Pressure Switch\u003cbr\u003e\nSize: Standard HVAC component\u003cbr\u003e\nApplication: Commonly used in residential gas furnaces, forced-air heating systems, and HVAC units to monitor inducer blower pressure and ensure safe venting.\u003cbr\u003e\nSpecifications: Pressure Setting: 0.55 Inches Water Column (IWC); Action: Closes on pressure rise; Function: Air proving safety interlock.","brand":"BCFurnace","offers":[{"title":"Air Pressure Switch, 05-5 IWC, Rise \/ 121-271","offer_id":50217054765341,"sku":null,"price":771.88,"currency_code":"CAD","in_stock":true},{"title":"Air Pressure Switch, 05-5 IWC, Rise \/ S1-03101123700","offer_id":50217054798109,"sku":null,"price":771.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/db6abc875ef8480b88f2ed5ec397c150.webp?v=1773965118","url":"https:\/\/bcfurnace.myshopify.com\/products\/121-271","provider":"BCFurnace","version":"1.0","type":"link"}