{"product_id":"oem-lennox-heat-exchanger-assembly-13x28","title":"OEM Lennox Heat Exchanger Assembly — 13X28","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e13X28\u003c\/strong\u003e heat exchanger assembly (factory reference 612216-06) is the essential heat-transfer component of your Lennox gas furnace. It absorbs heat from the combustion process and passes it to the circulating air, delivering warmth to your home while safely containing and venting exhaust gases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Signs of a worn or cracked heat exchanger include a flickering or reaching burner flame, visible rust, corrosion, or hairline cracks, expansion noises such as banging and ticking, soot deposits inside the cabinet, and repeated limit-switch trips causing the furnace to shut down. Any suspected crack is a carbon monoxide hazard and should be addressed immediately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e13X28\u003c\/strong\u003e is engineered to Lennox's precise dimensions, alloy composition, and weld specifications, ensuring an exact fit within the burner vestibule. Aftermarket parts risk poor sealing, reduced AFUE efficiency, and a voided warranty. The authentic Lennox assembly restores rated performance, proper combustion containment, and long-term dependability. Installation by a licensed HVAC technician is strongly advised.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081070526835,"sku":"LNX-13X28","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-13x28","provider":"National HVAC Parts","version":"1.0","type":"link"}