{"product_id":"allied-air-52m72-furnace-flame-sensor","title":"Allied Air 52M72 Furnace Flame Sensor","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ALLIED AIR 52M72 is a flame sensor designed for use in gas furnaces. The flame sensor monitors the burner flame during operation by detecting the small electrical current that a flame conducts between the sensor rod and the burner ground. If no flame is detected after ignition, the control board shuts off the gas valve to prevent unburned gas accumulation. This part is installed by licensed HVAC technicians during routine maintenance or as a replacement when a furnace is locking out on no-ignition faults caused by a fouled or failed sensor rod.\u003c\/p\u003e\u003cp\u003eThe 52M72 is suited for residential gas furnace applications. Flame sensor replacement is one of the most common service calls on older furnaces, typically when the sensor rod has accumulated an oxide coating that reduces conductivity. This part is referenced against the SG10B furnace application per supplier documentation, making it a direct-fit option in that product line.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDetects burner flame via flame rectification signal to prevent unburned gas discharge\u003c\/li\u003e\n\u003cli\u003eDirect replacement for failed or fouled OEM flame sensor rods\u003c\/li\u003e\n\u003cli\u003eLightweight construction at 0.2 pounds for easy handling during installation\u003c\/li\u003e\n\u003cli\u003eCompatible with residential gas furnace control systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eReferenced for use on the SG10B furnace per supplier documentation. Verify fitment against your specific unit model and control board before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eFlame sensor replacement is performed by a licensed HVAC technician. Before servicing, shut off power to the furnace at the disconnect switch and turn the gas supply to the OFF position. The sensor rod is typically secured with a single screw and connects via a single wire lead — handle the rod carefully to avoid contaminating the sensing element with skin oils. Follow all applicable local mechanical codes and manufacturer service documentation when reinstalling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Flame Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ALLIED AIR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 52M72\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED AIR","offers":[{"title":"Default Title","offer_id":51283979141426,"sku":"52M72","price":29.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277807.jpg?v=1781064882","url":"https:\/\/voomisupply.com\/products\/allied-air-52m72-furnace-flame-sensor","provider":"Voomi Supply","version":"1.0","type":"link"}