{"product_id":"oem-lennox-stainless-steel-heat-exchanger-assembly-19a68","title":"OEM Lennox Stainless Steel Heat Exchanger Assembly — 19A68","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A68\u003c\/strong\u003e is a stainless steel heat exchanger assembly, one of the most critical safety and efficiency components in your Lennox gas furnace. The heat exchanger transfers heat from the combustion process to the air circulating through your home while keeping toxic flue gases — including carbon monoxide — safely separated from your breathing air. Its stainless steel construction resists the corrosion and thermal fatigue that eventually claim lesser materials.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include visible cracks or rust, a flickering or wavering burner flame when the blower engages, soot buildup, unusual odors, and — most seriously — elevated carbon monoxide readings. A compromised heat exchanger is a health hazard and warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Heat exchangers are precisely engineered to your furnace's exact firing rate, airflow, and combustion geometry. The factory-original \u003cstrong\u003e19A68\u003c\/strong\u003e guarantees correct fit, proper heat transfer, and full sealing integrity that generic substitutes cannot promise — protecting both your equipment warranty and your family's safety. Installed by a qualified HVAC technician, this OEM assembly restores your Lennox furnace to rated performance.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072886131,"sku":"LNX-19A68","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-assembly-19a68","provider":"National HVAC Parts","version":"1.0","type":"link"}