{"product_id":"oem-lennox-aluminum-heat-exchanger-480k-btu-13u52","title":"OEM Lennox Aluminum Heat Exchanger 480K BTU — 13U52","description":"\u003cp\u003eGenuine OEM Lennox \u003cstrong\u003e13U52\u003c\/strong\u003e aluminized heat exchanger assembly, rated for 480,000 BTU commercial heating applications. This high-capacity exchanger transfers heat from the burners into the airstream across a large surface area while isolating combustion gases — the aluminized steel construction resists oxidation and thermal fatigue under the heavy duty cycles typical of larger Lennox units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e On high-BTU systems, look for cracking or warping at weld seams, rust and scaling, a burner flame that rolls or wavers when the blower engages, soot buildup, combustion odors, and reduced or uneven heat output. Repeated high-limit trips and short cycling frequently accompany a degraded exchanger, and a carbon monoxide alarm signals an urgent replacement need.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e A 480K BTU furnace places extreme thermal stress on its heat exchanger, so exact material grade and pass design are critical. The genuine Lennox \u003cstrong\u003e13U52\u003c\/strong\u003e is engineered to handle that load with correct airflow, efficiency, and safety-control compatibility. Aftermarket alternatives risk poor fit, premature failure, and voided warranty coverage on commercial equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076621683,"sku":"LNX-13U52","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-aluminum-heat-exchanger-480k-btu-13u52","provider":"National HVAC Parts","version":"1.0","type":"link"}