{"product_id":"oem-lennox-heat-exchanger-assembly-11x41","title":"OEM Lennox Heat Exchanger Assembly — 11X41","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e11X41\u003c\/strong\u003e heat exchanger assembly is the essential heat-transfer component in your Lennox gas furnace. It draws heat from the burning fuel and passes it into the moving air while keeping combustion byproducts fully sealed from your home's air supply. Built to Lennox factory tolerances, it delivers the exact fit, tube geometry, and metallurgy your furnace was engineered around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Typical warning signs include visible rust or cracks, soot buildup, a burner flame that flutters or changes shape when the blower engages, unusual smells during heating, or a furnace that repeatedly trips its limit or rollout switch. A cracked heat exchanger poses a carbon monoxide risk and should be replaced promptly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Substitute heat exchangers can differ in steel grade, thickness, and dimensional fit, leading to early failure, lost efficiency, and voided warranties. The OEM Lennox \u003cstrong\u003e11X41\u003c\/strong\u003e restores rated heat output and AFUE efficiency while maintaining the unit's original safety certification. Factory-correct fit means a faster, cleaner installation and dependable long-term operation for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081069379955,"sku":"LNX-11X41","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-11x41","provider":"National HVAC Parts","version":"1.0","type":"link"}