Lennox 98M81 Heat Exchanger

The Lennox 98M81 is a Heat Exchanger, an essentialpart of the Lennox gas furnace. Constructed from metal, it passes heat from the combustion chamber to the airflow to a warm home. Any problem with the heat exchanger can be potentially fatal, so a working unit is required for safe heating. The Lennox is only 1 inch long but part of an assembly. You can easily repair Lennox's furnace by replacing a faulty heat exchanger to achieve safe and efficient heating.