{"product_id":"oem-lennox-stainless-steel-heat-exchanger-assembly-57w84","title":"OEM Lennox Stainless Steel Heat Exchanger Assembly — 57W84","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e57W84\u003c\/strong\u003e stainless steel heat exchanger assembly transfers combustion heat into your home's air stream while resisting the corrosion and thermal fatigue that shorten the life of standard exchangers. Stainless construction makes it ideal for high-efficiency and secondary-condensing applications where moisture and acidic condensate are present. Manufactured to exact Lennox factory tolerances, it provides a guaranteed fit and long-lasting performance in compatible Lennox furnace systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Look for cracks, pinholes, or corrosion in the exchanger, a rolling or lifting burner flame, soot buildup, unusual odors, condensate leaks, or repeated high-limit trips. Because a breached heat exchanger can release carbon monoxide into your living space, prompt replacement is a safety priority.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Stainless heat exchangers must be formed from the correct grade of steel and welded to precise specifications to survive years of thermal and condensate stress. The OEM Lennox \u003cstrong\u003e57W84\u003c\/strong\u003e guarantees the right alloy, geometry, and sealing for safe combustion containment and rated efficiency. Aftermarket parts often use inferior materials and imprecise fit, risking early failure and warranty loss.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081063973235,"sku":"LNX-57W84","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-assembly-57w84","provider":"National HVAC Parts","version":"1.0","type":"link"}