{"product_id":"oem-lennox-heat-exchanger-assembly-r37214d001","title":"OEM Lennox Heat Exchanger Assembly — R37214D001","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003eR37214D001\u003c\/strong\u003e heat exchanger assembly is the heart of your Lennox furnace's heating system, transferring combustion heat into the circulating air while safely isolating exhaust gases from the air your home breathes. Built to Lennox factory specifications, it ensures correct burner-to-exchanger alignment, proper draft, and the heat transfer efficiency your furnace was rated to deliver.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Visible cracking, rust, or scaling on the exchanger, a burner flame that dances or rolls out, soot buildup, unusual smells when heating, or a carbon monoxide alarm sounding during furnace operation. A cracked or corroded heat exchanger poses a real safety risk and warrants prompt replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Only the genuine \u003cstrong\u003eR37214D001\u003c\/strong\u003e matches the exact alloy, weld construction, and combustion geometry Lennox engineered for safe, efficient operation. Aftermarket substitutes can misalign the burners, degrade efficiency, and jeopardize combustion safety. Choosing the OEM assembly safeguards your warranty and your household. In stock and ready to ship same day.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065185651,"sku":"LNX-R37214D001","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-r37214d001","provider":"National HVAC Parts","version":"1.0","type":"link"}