{"product_id":"oem-lennox-heat-exchanger-assembly-28j72","title":"OEM Lennox Heat Exchanger Assembly — 28J72","description":"\u003cp\u003eThis genuine OEM Lennox \u003cstrong\u003e28J72\u003c\/strong\u003e heat exchanger assembly is the essential heating component in your Lennox furnace, transferring combustion heat into the supply air while safely containing and venting exhaust gases. Produced to Lennox factory specifications, the \u003cstrong\u003e28J72\u003c\/strong\u003e is a direct-fit replacement engineered to seat correctly against the original burner, inducer, and limit-control assemblies for a clean, reliable installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A deteriorating heat exchanger commonly reveals itself through cracks or corrosion in the metal, a burner flame that flickers or bends when the blower engages, sooting, unusual smells, carbon-monoxide alarms, or a furnace that short cycles on its high-limit switch. Each of these signals a potential breach between combustion and living-space air.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The heat exchanger endures intense, repeated thermal stress and is critical to safe combustion, so exact metallurgy, seam welds, and dimensional accuracy are non-negotiable. Installing the authentic Lennox \u003cstrong\u003e28J72\u003c\/strong\u003e assures certified sealing integrity, proper component fit, and the sustained efficiency and warranty protection expected from genuine Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081071182195,"sku":"LNX-28J72","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-28j72","provider":"National HVAC Parts","version":"1.0","type":"link"}