{"product_id":"oem-lennox-heat-exchanger-assembly-78w82","title":"OEM Lennox Heat Exchanger Assembly — 78W82","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e78W82\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 combustion gases safely separated from the air your family breathes. This is a direct factory replacement engineered to the exact tolerances of your Lennox system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing heat exchanger often reveals itself through visible cracks or corrosion, rust flakes near the burners, a flickering or rolling burner flame, unusual odors during operation, or a furnace that repeatedly trips on the flame rollout or limit switch. Because a compromised heat exchanger can allow carbon monoxide to enter the home, prompt replacement is a safety priority.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox furnaces are built around precisely matched components. The \u003cstrong\u003e78W82\u003c\/strong\u003e is manufactured to the original specifications for correct fit, airflow, and combustion clearance — something aftermarket substitutes cannot guarantee. Installing the OEM part protects your warranty, restores rated efficiency, and ensures safe, code-compliant operation for the life of the unit.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081064038771,"sku":"LNX-78W82","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-78w82","provider":"National HVAC Parts","version":"1.0","type":"link"}