{"product_id":"oem-lennox-heat-exchanger-assembly-r37670d001","title":"OEM Lennox Heat Exchanger Assembly — R37670D001","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003eR37670D001\u003c\/strong\u003e heat exchanger assembly, cross-referenced with R37214D001, is the central combustion heat-transfer component of your Lennox gas furnace. It transfers burner heat into the circulating air while sealing flue gases away from the air you breathe. Produced to Lennox factory specifications, this assembly guarantees the correct tube geometry, metal composition, and mounting fit for compatible furnace platforms.\u003c\/p\u003e\u003cp\u003eThermal cycling stresses heat exchangers over their service life. Symptoms of a failing \u003cstrong\u003eR37670D001\u003c\/strong\u003e include visible cracks or corrosion, an unstable or discolored burner flame, soot deposits, strange odors, frequent high-limit shutdowns, or carbon monoxide detected during a heat call. A cracked exchanger is a safety hazard and should be replaced immediately.\u003c\/p\u003e\u003cp\u003eThe OEM Lennox \u003cstrong\u003eR37670D001\u003c\/strong\u003e matters because generic replacements seldom match the original gauge, stamping, and tolerances, which can lead to premature cracking, poor heat transfer, and airflow problems. This factory-specified part restores rated performance and preserves your Lennox warranty coverage.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081064857971,"sku":"LNX-R37670D001","price":399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-heat-exchanger-LNX-R37670D001.jpg?v=1783761843","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-r37670d001","provider":"National HVAC Parts","version":"1.0","type":"link"}