{"product_id":"oem-lennox-heat-exchanger-assembly-63l07","title":"OEM Lennox Heat Exchanger Assembly — 63L07","description":"\u003cp\u003eGenuine OEM Lennox \u003cstrong\u003e63L07\u003c\/strong\u003e heat exchanger assembly. This component captures heat from the furnace burners and transfers it to your home's supply air while sealing off toxic combustion byproducts. As a factory-original Lennox part, the \u003cstrong\u003e63L07\u003c\/strong\u003e is manufactured to the precise dimensions and material grade required for a secure fit and dependable, long-term operation in your furnace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Watch for hairline cracks, corrosion or rust flakes, a burner flame that changes shape when the blower runs, soot deposits, strange smells during heating cycles, or a triggered carbon monoxide detector. Diminished heat output and frequent cycling are also warning signs. A breached heat exchanger poses a serious carbon monoxide risk and warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox engineers each heat exchanger to a specific furnace platform, matching alloy, gauge, and airflow path to the appliance's combustion design. Choosing the genuine \u003cstrong\u003e63L07\u003c\/strong\u003e guarantees proper heat transfer, correct flue performance, and full integration with Lennox limit and safety controls — preserving efficiency, safety, and warranty coverage that generic parts cannot reliably deliver.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076556147,"sku":"LNX-63L07","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-63l07","provider":"National HVAC Parts","version":"1.0","type":"link"}