{"product_id":"oem-lennox-heat-exchanger-assembly-57m98","title":"OEM Lennox Heat Exchanger Assembly — 57M98","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e57M98\u003c\/strong\u003e heat exchanger assembly is the combustion component that draws heat from burning gas and delivers it to the air flowing through your furnace, all while containing exhaust gases safely away from your indoor environment. Manufactured to precise Lennox standards, it ensures reliable, efficient, and safe heating.\u003c\/p\u003e\u003cp\u003eTelltale signs that a heat exchanger needs replacement include visible cracking or corrosion, soot buildup, a burner flame that appears yellow or unsteady, musty or chemical odors during operation, and carbon monoxide alarms. Given the safety stakes, the \u003cstrong\u003e57M98\u003c\/strong\u003e should be swapped out promptly at the first evidence of failure.\u003c\/p\u003e\u003cp\u003eOEM quality is non-negotiable for this part. The \u003cstrong\u003e57M98\u003c\/strong\u003e matches the exact dimensions, weld integrity, and material specification your Lennox furnace requires for a proper seal and correct airflow — precision that aftermarket alternatives cannot consistently meet. Installing the factory part safeguards your warranty, restores full efficiency, and protects everyone in the home.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076130163,"sku":"LNX-57M98","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-57m98","provider":"National HVAC Parts","version":"1.0","type":"link"}