{"product_id":"oem-lennox-heat-exchanger-assembly-13x50-612218-44","title":"OEM Lennox Heat Exchanger Assembly — 13X50 (612218-44)","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e13X50\u003c\/strong\u003e heat exchanger assembly, also referenced as part number 612218-44, transfers combustion heat into your furnace's air supply while maintaining a sealed barrier that keeps flue gases out of the conditioned air. Built to Lennox factory specifications, this assembly is a direct replacement that restores full heating capacity and safe operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include cracks, rust, or holes in the exchanger, a lingering smell of combustion gases, soot accumulation, unstable burner flames, and frequent high-limit or flame-sensor faults. Because a cracked exchanger can allow carbon monoxide into your home, any evidence of damage warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e13X50\u003c\/strong\u003e is produced to the precise material, dimensions, and heat-transfer design your Lennox furnace requires. Aftermarket parts can weaken the combustion seal, reduce efficiency, and void warranty coverage. Installing the authentic OEM assembly guarantees a correct fit and the durable, safe performance Lennox engineered into your equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081074852211,"sku":"LNX-13X50","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-13x50-612218-44","provider":"National HVAC Parts","version":"1.0","type":"link"}