{"product_id":"oem-lennox-heat-exchanger-assembly-13x53","title":"OEM Lennox Heat Exchanger Assembly — 13X53","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e13X53\u003c\/strong\u003e heat exchanger assembly (factory reference 612224-44) is the heart of your Lennox gas furnace's combustion system. It captures heat from the burning gas and passes it to the air moving across it, all while sealing dangerous flue gases away from your indoor air. Built to Lennox factory tolerances, this assembly preserves correct airflow patterns, flame stability, and rated AFUE efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include cracks, corrosion, or scaling on the metal surface, a yellow or unsteady burner flame, unusual booming or popping at ignition, soot accumulation, and rising carbon monoxide levels. Because a failed exchanger poses a safety hazard, replacement should be handled by a licensed HVAC professional right away.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox designs each furnace around the exact alloy and geometry of its original heat exchanger. Installing an OEM \u003cstrong\u003e13X53\u003c\/strong\u003e guarantees proper heat transfer, secure flue containment, correct fit, and warranty compliance that aftermarket substitutes cannot match. In stock and ships same day before 3PM CST.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081074917747,"sku":"LNX-13X53","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-13x53","provider":"National HVAC Parts","version":"1.0","type":"link"}