{"product_id":"oem-lennox-heat-exchanger-99w41","title":"OEM Lennox Heat Exchanger — 99W41","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e99W41\u003c\/strong\u003e heat exchanger is the heart of your gas furnace's heating process. It transfers heat from the combustion gases to the circulating air stream while safely containing and venting exhaust byproducts. Engineered to exact factory specifications, the \u003cstrong\u003e99W41\u003c\/strong\u003e delivers the precise fit, airflow, and structural integrity your compatible Lennox furnace requires.\u003c\/p\u003e\u003ch3\u003eCommon Failure Symptoms\u003c\/h3\u003e\u003cp\u003eHeat exchangers can crack or corrode after years of thermal expansion and contraction. Warning signs include visible rust or cracks, a flickering or shifting burner flame, soot buildup, unusual odors, or a carbon monoxide detector alarm. A compromised heat exchanger is a serious safety hazard and should be replaced immediately.\u003c\/p\u003e\u003ch3\u003eWhy OEM Matters\u003c\/h3\u003e\u003cp\u003eA heat exchanger is a safety-critical, containment component — dimensional accuracy and metallurgy are non-negotiable. The OEM Lennox \u003cstrong\u003e99W41\u003c\/strong\u003e is manufactured to the tolerances your furnace was designed around, ensuring proper combustion sealing, efficient heat transfer, and safe venting. Genuine Lennox parts help maintain your warranty and give you confidence in your family's safety.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081144090995,"sku":"LNX-99W41","price":399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-heat-exchanger-LNX-99W41.jpg?v=1783761917","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-99w41","provider":"National HVAC Parts","version":"1.0","type":"link"}