{"product_id":"oem-lennox-heat-exchanger-assembly-26l23","title":"OEM Lennox Heat Exchanger Assembly — 26L23","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e26L23\u003c\/strong\u003e heat exchanger assembly is the primary heat-transfer component in your Lennox gas furnace, moving combustion heat into your home's air supply while safely separating flue gases from the air you breathe. Built to exact Lennox factory tolerances, it ensures the correct airflow, temperature rise, and combustion sealing your furnace was designed around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Cracks or corrosion in the exchanger, a burner flame that flickers or rolls out when the blower starts, soot accumulation, a lingering smell of combustion, or a carbon monoxide detector alarm all indicate the assembly has failed and must be replaced right away as a safety priority.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e As a life-safety part, the heat exchanger cannot be substituted casually — aftermarket units with different geometry or metallurgy can misdirect the flame, crack early, or leak carbon monoxide. The OEM \u003cstrong\u003e26L23\u003c\/strong\u003e is manufactured to Lennox's exact material and dimensional standards, preserving your furnace's safety certification, efficiency rating, and reliable long-term operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081071378803,"sku":"LNX-26L23","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-26l23","provider":"National HVAC Parts","version":"1.0","type":"link"}