{"product_id":"oem-lennox-furnace-heat-exchanger-assembly-14k72","title":"OEM Lennox Furnace Heat Exchanger Assembly — 14K72","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e14K72\u003c\/strong\u003e heat exchanger assembly (factory reference 612983-04) is the essential heat-transfer component in your Lennox gas furnace. It transfers combustion heat into the air your blower distributes throughout the home, while safely containing and venting flue gases. Engineered to Lennox factory specifications, it is a direct-fit replacement for compatible furnace models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Look for cracks, rust, or corrosion on the exchanger, a burner flame that wavers or is pulled when the blower starts, soot buildup, odd odors during heating, or recurring furnace lockouts on the limit or rollout switch. Because a cracked exchanger can leak carbon monoxide into the airstream, replacement is a safety-critical priority that shouldn't be delayed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The authentic Lennox \u003cstrong\u003e14K72\u003c\/strong\u003e exchanger is produced to exact factory metallurgy, dimensions, and chamber design, ensuring a proper seal, rated efficiency, and dependable performance over time. Aftermarket copies can compromise fit, output, and safety, and may void remaining warranty protection. Choose the genuine OEM part to keep your Lennox furnace safe and efficient.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081075310963,"sku":"LNX-14K72","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-furnace-heat-exchanger-assembly-14k72","provider":"National HVAC Parts","version":"1.0","type":"link"}