{"product_id":"oem-lennox-stainless-steel-heat-exchanger-assembly-19a76","title":"OEM Lennox Stainless Steel Heat Exchanger Assembly — 19A76","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A76\u003c\/strong\u003e is a stainless steel heat exchanger assembly, the core furnace component that transfers combustion heat to the air circulating through your home while keeping toxic flue gases safely separated. Precision-formed from corrosion-resistant stainless steel, it is engineered to the exact tolerances of your Lennox furnace for proper airflow, sealing, and combustion performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing heat exchanger often shows up as visible cracks or rust, a flickering or wavering burner flame, soot buildup, unusual odors, or a carbon monoxide detector alarm. Any of these signs means the exchanger should be replaced immediately, as a breached exchanger can leak combustion byproducts into your living space.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Because a heat exchanger is a safety-critical part, an exact-fit OEM Lennox \u003cstrong\u003e19A76\u003c\/strong\u003e is the only reliable choice. Aftermarket substitutes may not match Lennox weld patterns, metal gauge, or dimensions, risking improper combustion, premature failure, and voided warranties. This factory assembly restores your furnace to rated efficiency and safe operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081075868019,"sku":"LNX-19A76","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-assembly-19a76","provider":"National HVAC Parts","version":"1.0","type":"link"}