{"product_id":"oem-lennox-heat-exchanger-assembly-14d67","title":"OEM Lennox Heat Exchanger Assembly — 14D67","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e14D67\u003c\/strong\u003e heat exchanger assembly (factory references 612998-18 and 610280-03) is the primary combustion component in your Lennox gas furnace. It captures heat from the burners and delivers it to the passing air while containing and safely venting the products of combustion. A properly sealed heat exchanger is fundamental to both furnace efficiency and indoor air safety.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e cracks or corrosion in the metal, a wavering or discolored flame, booming or rumbling at ignition, soot buildup, unusual odors, or a carbon monoxide alarm. Because a breached exchanger can leak flue gases into your living space, it should be replaced right away.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the \u003cstrong\u003e14D67\u003c\/strong\u003e matches the exact metallurgy, geometry, and thermal ratings of your Lennox furnace model. Aftermarket parts risk poor sealing, altered airflow, and early failure. The correct OEM assembly restores factory fit, rated efficiency, and safe, reliable heating.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065447795,"sku":"LNX-14D67","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-14d67","provider":"National HVAC Parts","version":"1.0","type":"link"}