{"product_id":"oem-lennox-heat-exchanger-assembly-28j76","title":"OEM Lennox Heat Exchanger Assembly — 28J76","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e28J76\u003c\/strong\u003e heat exchanger assembly is the heart of your Lennox furnace's heating cycle, transferring combustion heat to the circulating air while containing exhaust gases within its sealed cells. Manufactured to Lennox factory specifications, it drops into compatible models for a precise, reliable fit that restores full heating performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Telltale signs of a failing exchanger include visible cracks or corrosion, a distorted or flickering burner flame, soot or rust accumulation, sharp expansion pops when the furnace fires, unusual odors, or a tripped carbon monoxide detector. Because a cracked exchanger can leak combustion byproducts into your living space, replacement should never be delayed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e28J76\u003c\/strong\u003e is engineered with the exact alloy, cell pattern, and mounting tolerances your Lennox furnace requires to manage thermal stress and airflow correctly. Genuine OEM parts safeguard rated efficiency, ensure a proper gas-tight seal, and keep your warranty intact — protections that aftermarket alternatives typically cannot match. Install the factory-original component for lasting, safe operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081075605875,"sku":"LNX-28J76","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-28j76","provider":"National HVAC Parts","version":"1.0","type":"link"}