OEM Lennox Heat Exchanger Assembly — 98W32

The genuine OEM Lennox 98W32 heat exchanger assembly is engineered to carry combustion heat into your home's air supply while keeping flue gases completely sealed away from the airflow you breathe. As the central heating element of a Lennox gas furnace, it routes hot combustion gases through its passages while blower air absorbs that heat and distributes it through your ducts. The assembly is built to the exact specifications Lennox requires for the furnaces it serves.

Telltale signs of heat exchanger failure include cracks or corrosion in the metal, a flickering or rolling burner flame, soot buildup, loud popping or rumbling at ignition, and an unusual odor when the furnace fires. Any of these can signal that exhaust — including carbon monoxide — may be entering your home, making replacement urgent.

The OEM 98W32 earns its place because Lennox designs each exchanger around the specific thermal load, gas pressure, and cycling stress of its furnace platforms. Aftermarket units often can't match the metallurgy or weld quality, inviting premature failure and warranty issues. This factory-authentic part delivers a correct fit, restores rated efficiency, and safeguards the safe operation of your Lennox furnace.