Rheem-Ruud AS-58632-88 Stainless Steel Heat Exchanger Assembly is a high-quality heating component designed to transfer heat safely and efficiently in compatible gas-fired HVAC systems. It works by separating combustion gases from the indoor air while allowing heat to pass through its stainless steel surfaces, providing consistent and reliable warm airflow. https://www.partshnc.com/heat-exchanger-assembly-ss-as-58632-88-rheem-ruud