Lennox 12Y84 Heat Exchanger Assembly

The Lennox 12Y84 Heat Exchanger Assembly is a heating component used to transfer heat from the combustion process to the air moving through the equipment. It is installed inside furnaces or packaged heating units, where airflow passes across the exchanger surface to absorb heat without direct contact with combustion gases. This assembly serves as a contained heat transfer section within the unit, allowing heated air to be distributed through the system during operation. It supports temperature rise, controlled heating performance, and airflow warming in gas-fired equipment and other heating applications associated with HVAC systems.