{"product_id":"oem-lennox-heat-exchanger-assembly-73m10","title":"OEM Lennox Heat Exchanger Assembly — 73M10","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e73M10\u003c\/strong\u003e heat exchanger assembly is the core component that transfers combustion heat to the air circulating through your Lennox gas furnace while keeping flue gases safely separated from your home's air supply. Precision-formed to Lennox factory specifications, it restores rated heating capacity and efficiency to compatible furnace models.\u003c\/p\u003e\u003cp\u003eA failing heat exchanger typically shows itself through visible cracks or rust, soot buildup, a flickering or yellow burner flame, unusual popping or rattling sounds during ignition, or — most critically — the presence of carbon monoxide. Any of these symptoms warrants immediate replacement, as a compromised heat exchanger is a serious safety hazard.\u003c\/p\u003e\u003cp\u003eChoosing the OEM \u003cstrong\u003e73M10\u003c\/strong\u003e matters because heat exchangers are engineered to exact tolerances for your specific Lennox unit. Aftermarket substitutes can misfit, disrupt airflow patterns, void your warranty, and fail to meet the safety and durability standards Lennox builds into every original part. Insist on genuine OEM for reliable, code-compliant furnace performance.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072230771,"sku":"LNX-73M10","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-73m10","provider":"National HVAC Parts","version":"1.0","type":"link"}