Reznor 19430 Heat Exchanger Assembly 409 X 125

The Reznor 19430 Heat Exchanger Assembly 409 X125 is a heat transfer component designed to transfer combustion heat efficiently to the circulating air while keeping combustion gases isolated from the conditioned airflow. It transfers thermal energy generated during combustion to the circulating air stream while maintaining separation between combustion gases and supply air. It is placed within the heating section of the unit, and it serves as the surface for heat exchange and plays a critical role in the combustion process. It is used where dependable heat delivery is required. Its design supports efficient thermal transfer and consistent heating output.