{"product_id":"oem-lennox-heat-exchanger-assembly-10a50","title":"OEM Lennox Heat Exchanger Assembly — 10A50","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e10A50\u003c\/strong\u003e heat exchanger assembly (factory references 605996-72 \/ 612218-03) is the primary heat-transfer component in your Lennox gas furnace. As combustion gases pass through its sealed chambers, heat radiates to the blower-driven air stream while flue byproducts are safely vented — delivering warm, clean air throughout your home.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing heat exchanger typically produces a distorted or roaring burner flame, visible cracks, rust, or scaling, metallic clicking and expansion noise during heat cycles, and repeated high-limit shutdowns. A cracked exchanger is also a carbon monoxide risk, so any of these signs warrants immediate inspection and replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e10A50\u003c\/strong\u003e is built to Lennox's precise gauge, weld pattern, and burner alignment specifications. Generic replacements often fail to match the vestibule geometry, leading to combustion leaks, reduced efficiency, and a voided furnace warranty. Choosing the authentic Lennox assembly guarantees a correct fit, rated efficiency, and safe operation. Have this part installed by a qualified HVAC professional.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081070461299,"sku":"LNX-10A50","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-10a50","provider":"National HVAC Parts","version":"1.0","type":"link"}