{"product_id":"oem-lennox-stainless-steel-heat-exchanger-assembly-53l65","title":"OEM Lennox Stainless Steel Heat Exchanger Assembly — 53L65","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e53L65\u003c\/strong\u003e is a stainless steel heat exchanger assembly built for long-term durability in Lennox gas furnaces. The heat exchanger is the core component that transfers heat from the combustion chamber to the air moving through your ductwork while keeping combustion gases fully separated from your home's air supply. Stainless steel construction resists the corrosion and thermal fatigue that shorten the life of lesser materials.\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 shifting burner flame when the blower engages, unusual odors, soot buildup, or repeated furnace lockouts. Because cracks can leak carbon monoxide into the airstream, any suspected heat exchanger failure should be addressed immediately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e53L65\u003c\/strong\u003e is engineered to the exact dimensions, alloy, and mounting specifications of your Lennox furnace. Choosing the genuine OEM part preserves proper combustion sealing, rated efficiency, safe operation, and manufacturer warranty coverage — assurances that generic replacements cannot match.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081077080435,"sku":"LNX-53L65","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-assembly-53l65","provider":"National HVAC Parts","version":"1.0","type":"link"}