{"product_id":"oem-lennox-heat-exchanger-assembly-14d61","title":"OEM Lennox Heat Exchanger Assembly — 14D61","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e14D61\u003c\/strong\u003e heat exchanger assembly — cross-referenced as 612998-12 and 610280-18 — is the sealed heat-transfer chamber that moves burner heat into your furnace's circulating air while isolating combustion byproducts from the air you breathe. It is manufactured to Lennox factory tolerances for a precise, trustworthy fit.\u003c\/p\u003e\u003cp\u003eWhen this component fails, warning signs include cracking or rust in the metal, a distorted or roaring burner flame, soot deposits, unusual smells, and elevated carbon monoxide levels. These symptoms carry genuine safety risks, so a compromised exchanger should be replaced immediately by a qualified technician rather than left in service.\u003c\/p\u003e\u003cp\u003eInstalling the OEM Lennox \u003cstrong\u003e14D61\u003c\/strong\u003e is essential because the assembly's metallurgy and dimensions are matched exactly to your furnace's heat load and airflow path. Generic substitutes may seal poorly, crack under thermal stress, or reduce efficiency. The factory part ensures correct fit, proper heat transfer, and continued warranty compliance for your Lennox system.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065644403,"sku":"LNX-14D61","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-14d61","provider":"National HVAC Parts","version":"1.0","type":"link"}