{"product_id":"oem-lennox-heat-exchanger-assembly-28j67","title":"OEM Lennox Heat Exchanger Assembly — 28J67","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e28J67\u003c\/strong\u003e heat exchanger assembly is the core combustion component of your Lennox gas furnace. It transfers heat from the burned fuel to the circulating air stream while keeping toxic combustion byproducts safely separated from the air your family breathes. This factory assembly is engineered to the exact dimensions, alloy, and burner alignment your Lennox furnace requires for rated efficiency and safe operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing heat exchanger often shows up as visible cracks or rust, a flickering or rolling burner flame, soot buildup, unusual odors, or a carbon monoxide detector that trips when the furnace runs. Cracked heat exchangers are a serious safety hazard and require immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Aftermarket or salvaged heat exchangers rarely match the precise metallurgy and burner geometry that Lennox designed for safe combustion. Installing the genuine \u003cstrong\u003e28J67\u003c\/strong\u003e ensures proper flame containment, correct heat transfer, and full compatibility with your furnace's safety controls — protecting both your equipment and your household. Backed by OEM quality and ready to ship same day.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065087347,"sku":"LNX-28J67","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-28j67","provider":"National HVAC Parts","version":"1.0","type":"link"}