{"product_id":"oem-lennox-heat-exchanger-assembly-14d73","title":"OEM Lennox Heat Exchanger Assembly — 14D73","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e14D73\u003c\/strong\u003e heat exchanger assembly — also referenced by Lennox part numbers 612998-22 and 610280-16 — transfers combustion heat into your home's circulating air while sealing off dangerous flue gases. This assembly is central to both the efficiency and the safe operation of your Lennox gas furnace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include visible cracks or rust on the exchanger, a burner flame that shifts or rolls out when the blower engages, unusual smells, soot deposits, and carbon monoxide alarms. A compromised heat exchanger allows combustion byproducts to reach indoor air and must be replaced promptly by a qualified technician.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e14D73\u003c\/strong\u003e is manufactured to Lennox's exact specifications for materials, welds, and airflow design. Aftermarket alternatives can break the seal between combustion and supply air, cut heating efficiency, and void your warranty. The authentic Lennox part ensures a drop-in fit and restores your furnace to its rated performance and safety margins. Installation must be completed by a licensed HVAC professional.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065742707,"sku":"LNX-14D73","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-14d73","provider":"National HVAC Parts","version":"1.0","type":"link"}