{"product_id":"oem-lennox-heat-exchanger-assembly-73m15","title":"OEM Lennox Heat Exchanger Assembly — 73M15","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e73M15\u003c\/strong\u003e heat exchanger assembly is the core component that transfers heat from the combustion process to the air circulating through your furnace, all while keeping combustion gases safely separated from your home's airflow. Precision-engineered to Lennox factory specifications, this assembly restores rated heating capacity and safe operation to your gas furnace system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include visible rust or cracks in the metal, a persistent smell of combustion gases, soot buildup, flickering or rolling burner flames, and repeated flame sensor or limit switch trips. A cracked heat exchanger can also allow carbon monoxide to enter the airstream, making prompt replacement a critical safety concern.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e73M15\u003c\/strong\u003e is built to the exact tolerances, alloy grade, and dimensions your Lennox furnace was designed around. Aftermarket substitutes can compromise the seal between combustion and supply air, reduce efficiency, and risk warranty coverage. Choosing the OEM assembly ensures a proper fit, correct heat transfer, and the long service life Lennox engineered into your equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081074721139,"sku":"LNX-73M15","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-73m15","provider":"National HVAC Parts","version":"1.0","type":"link"}