{"product_id":"773-391","title":"773-391","description":"Ensure the safe and efficient operation of your heating system with this premium Dual Port Pressure Switch. As a critical air proving component, this switch monitors the pressure differential created by the draft inducer motor, ensuring that exhaust gases are properly vented before the ignition sequence begins. Designed with a precise 0.71\" WC (Water Column) activation point, it acts as a vital safety lockout mechanism to prevent furnace operation under improper venting or blocked flue conditions. This dual-port sensor is a common replacement part for HVAC systems experiencing ignition failure, frequent cycling, or pressure-related error codes. It offers a reliable, durable solution for maintaining optimal airflow and combustion safety in residential forced-air furnaces.\u003cbr\u003e\nType: Air Pressure Switch\u003cbr\u003e\nSize: Standard HVAC Component\u003cbr\u003e\nApplication: Specifically designed for use in residential gas furnaces and HVAC air handling units to monitor draft inducer airflow and ensure safe combustion sequences.\u003cbr\u003e\nSpecifications: Pressure Rating: 0.71\" WC; Configuration: Dual Port; Function: Air Proving and Safety Lockout; Compatibility: Forced-air heating systems.","brand":"BCFurnace","offers":[{"title":"YORK\/ETC DUAL PORT PRESSURE SWITCH 0.71\" WC \/ 773-391","offer_id":50572776898845,"sku":null,"price":106.76,"currency_code":"CAD","in_stock":true},{"title":"YORK\/ETC DUAL PORT PRESSURE SWITCH 0.71\" WC \/ 02436052007","offer_id":50572781748509,"sku":null,"price":106.76,"currency_code":"CAD","in_stock":true},{"title":"YORK\/ETC DUAL PORT PRESSURE SWITCH 0.71\" WC \/ S1-02436052007","offer_id":50572776931613,"sku":null,"price":106.76,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/9d9022daa14b4009a71ace56a7695937.webp?v=1773964427","url":"https:\/\/bcfurnace.myshopify.com\/products\/773-391","provider":"BCFurnace","version":"1.0","type":"link"}