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The genuine OEM Lennox 96M79 heat exchanger assembly is the core heating component in your Lennox packaged unit, transferring combustion heat to the airstream while keeping flue gases safely separated from the air you breathe. Engineered to exact factory specifications, it is designed as a direct-fit replacement for the packaged systems that originally shipped with the 96M79, ensuring proper alignment with burners, the inducer, and the limit controls.
Common failure symptoms: A failing heat exchanger often shows up as visible cracks or rust, a flickering or lifting burner flame, soot buildup, unusual odors during heating, or a furnace that repeatedly trips on the high-limit switch. Because a compromised heat exchanger can allow carbon monoxide to mix with supply air, these symptoms should never be ignored.
Why OEM matters: Heat exchangers are safety-critical, high-temperature components where metallurgy, weld quality, and dimensional tolerances directly affect performance and combustion integrity. Installing the authentic Lennox 96M79 guarantees the correct steel gauge, burner clearances, and gas-tight construction your equipment was certified with — protecting efficiency, warranty coverage, and the safety of your home or facility.