{"product_id":"oem-lennox-heat-exchanger-assembly-57m96","title":"OEM Lennox Heat Exchanger Assembly — 57M96","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e57M96\u003c\/strong\u003e heat exchanger assembly is the heart of your Lennox furnace's heating cycle, capturing heat from the combustion process and transferring it to the air distributed throughout your home — all while safely containing exhaust gases. Made to precise factory specifications, it restores full heating output and efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Telltale signs of a failing exchanger include visible cracking or rust, a wavering or discolored burner flame, frequent limit-switch shutdowns, furnace short-cycling, or a faint combustion smell. Because cracks can release carbon monoxide into the supply air, a damaged exchanger warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The heat exchanger is a safety and pressure-tested component, so the genuine Lennox \u003cstrong\u003e57M96\u003c\/strong\u003e is essential to guarantee the correct steel grade, weld quality, and exact fit your furnace demands. Aftermarket alternatives can undermine combustion sealing and void your warranty. Trust the OEM assembly for safe, dependable, high-efficiency heating.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081070330227,"sku":"LNX-57M96","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-57m96","provider":"National HVAC Parts","version":"1.0","type":"link"}