{"product_id":"oem-lennox-heat-exchanger-assembly-16u73","title":"OEM Lennox Heat Exchanger Assembly — 16U73","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e16U73\u003c\/strong\u003e heat exchanger assembly is the heart of your furnace's heating cycle, transferring heat from the combustion process to the air circulating through your home while keeping flue gases safely separated from your breathing air. This precision-formed assembly is engineered to the exact tolerances of your Lennox gas furnace, ensuring proper airflow, complete combustion, and rated efficiency across the life of the unit.\u003c\/p\u003e\u003cp\u003eA failing heat exchanger often reveals itself through cracks, rust or corrosion, soot buildup, a flickering or rolling burner flame, unusual odors, or in serious cases carbon monoxide detector activation. Because the heat exchanger is a critical safety component, any sign of a crack or breach means the assembly should be replaced immediately rather than repaired.\u003c\/p\u003e\u003cp\u003eChoosing OEM matters here more than anywhere else in the furnace. The Lennox \u003cstrong\u003e16U73\u003c\/strong\u003e is built from the correct alloy and gauge to withstand thermal cycling and resist the metal fatigue that causes premature cracking. Aftermarket substitutes can compromise fit, combustion safety, and your factory warranty — the OEM assembly restores your Lennox furnace to its original performance and safety specification.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081069412723,"sku":"LNX-16U73","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-16u73","provider":"National HVAC Parts","version":"1.0","type":"link"}