OEM Lennox Heat Exchanger Assembly — 28M83

The genuine OEM Lennox 28M83 heat exchanger assembly, also referenced as LB-94782K, is the component that transfers combustion heat to your home's circulating air while safely isolating exhaust gases. Within your Lennox gas furnace, hot combustion byproducts travel through the exchanger's sealed channels as the blower pushes air across them, producing warm, clean airflow for every room served by your system. It is manufactured to Lennox's precise factory tolerances.

Common indicators of a failing heat exchanger include visible cracks or rust on the metal surface, a burner flame that dances or rolls outward, soot accumulation, sharp popping or rumbling sounds during ignition, and a chemical odor while heating. Because these faults can release carbon monoxide indoors, prompt replacement is essential for household safety.

The OEM 28M83 is worth insisting on because Lennox builds each exchanger to endure the exact temperature rise, gas input, and expansion cycling of its furnaces. Generic replacements often fall short on alloy grade and weld integrity, leading to early cracking and warranty complications. This authentic factory part restores dependable, efficient, and safe heating to your Lennox equipment.