{"product_id":"oem-lennox-heat-exchanger-assembly-83k09","title":"OEM Lennox Heat Exchanger Assembly — 83K09","description":"\u003cp\u003eGenuine OEM Lennox \u003cstrong\u003e83K09\u003c\/strong\u003e heat exchanger assembly. This component captures heat from your furnace's burners and transfers it into the circulating air stream, all while forming a sealed barrier that keeps combustion byproducts out of the air you breathe. Built to Lennox factory specifications, the \u003cstrong\u003e83K09\u003c\/strong\u003e is a direct replacement that restores your furnace to its original heating capacity and safety performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Watch for cracks, hairline splits, or rust-through in the exchanger walls, a yellow or dancing burner flame, soot or scorch marks, strange odors during operation, or nuisance shutdowns caused by the flame rollout or high-limit safety switches. Any of these can indicate a breach that allows carbon monoxide into the home, making prompt replacement essential.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox heat exchangers are matched to the exact burner pattern, airflow, and thermal expansion profile of your furnace. Installing a genuine \u003cstrong\u003e83K09\u003c\/strong\u003e guarantees correct fit, proper gas-to-air separation, and the efficiency and safety ratings your system was certified to meet. Choosing OEM protects your equipment warranty and delivers the long service life you expect from Lennox.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072591219,"sku":"LNX-83K09","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-83k09","provider":"National HVAC Parts","version":"1.0","type":"link"}