{"product_id":"oem-lennox-heat-exchanger-assembly-12y85","title":"OEM Lennox Heat Exchanger Assembly — 12Y85","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e12Y85\u003c\/strong\u003e heat exchanger assembly (also referenced as part numbers 614580-06 and 612218-07) captures heat from your furnace's burners and passes it to the air moving across it, all while sealing dangerous combustion gases away from your home's air supply. Built to Lennox factory specifications, it delivers the exact fit and rated performance your furnace was designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Watch for cracks, corrosion, or discoloration on the exchanger walls, a burner flame that dances or lifts when the blower runs, unusual odors during heating cycles, soot accumulation, or a triggered carbon monoxide alarm. These are clear indicators the assembly needs replacement without delay.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e As a safety-critical part, the heat exchanger must maintain a perfect seal between combustion and breathing air. Only a genuine Lennox \u003cstrong\u003e12Y85\u003c\/strong\u003e provides the certified steel, precision welds, and exact dimensions that preserve safe furnace operation and protect your warranty. Aftermarket copies risk poor fit and compromised safety. Install OEM for a reliable, code-compliant repair.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081073607027,"sku":"LNX-12Y85","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-12y85","provider":"National HVAC Parts","version":"1.0","type":"link"}