{"product_id":"oem-lennox-heat-exchanger-assembly-19a59","title":"OEM Lennox Heat Exchanger Assembly — 19A59","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A59\u003c\/strong\u003e heat exchanger assembly moves heat from your furnace's combustion chamber into the airstream that warms your home, all while keeping flue gases safely contained and isolated. As the heart of your Lennox furnace's heating cycle, its integrity directly affects both efficiency and indoor air safety.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include cracks, corrosion, or rust spots on the metal, a burner flame that flutters when the blower runs, strong or unusual odors, soot accumulation, and carbon monoxide detector activation. Any evidence of a breach warrants immediate inspection and replacement by a certified technician.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e19A59\u003c\/strong\u003e is built to Lennox's precise engineering standards for alloy composition, weld strength, and pass geometry — details that generic replacements often miss. Off-brand parts can undermine the combustion seal, lower heating output, and jeopardize your equipment warranty. The genuine Lennox assembly guarantees an exact fit and restores factory-rated performance and safety. Have this component installed by a licensed HVAC professional.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065709939,"sku":"LNX-19A59","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-19a59","provider":"National HVAC Parts","version":"1.0","type":"link"}