{"product_id":"oem-lennox-heat-exchanger-assembly-14d52","title":"OEM Lennox Heat Exchanger Assembly — 14D52","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e14D52\u003c\/strong\u003e heat exchanger assembly (factory references 612998-03 and 610280-05) is the central heating element of your Lennox gas furnace. It captures heat from the burner combustion process and transfers it to the circulating supply air, all while keeping flue gases fully isolated from the conditioned air in your home. Built to original Lennox tolerances, it drops in with the correct fit and restores your furnace to its rated heating efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e a failing exchanger commonly produces a wavering or discolored burner flame, visible cracks, rust, or soot near the heat exchanger, a strange odor during operation, and furnace short-cycling triggered by flame-sensor lockouts. Because a cracked exchanger can leak carbon monoxide into the airstream, these symptoms should never be ignored.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e heat exchangers are a safety-critical component where exact fit is non-negotiable. The OEM \u003cstrong\u003e14D52\u003c\/strong\u003e matches Lennox steel gauge and burner alignment precisely, ensuring proper combustion, rated performance, and continued warranty compliance — assurances aftermarket parts can't provide.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081066201459,"sku":"LNX-14D52","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-14d52","provider":"National HVAC Parts","version":"1.0","type":"link"}