The Carrier 48GS660003 Heat Exchanger is a genuine replacement component designed for compatible Carrier gas furnaces and packaged HVAC units. It transfers heat from the burner combustion process to the circulating air without allowing combustion gases to mix with the indoor airflow, ensuring safe and efficient heating. Built for durability and dependable performance, this heat exchan... https://www.partshnc.com/heat-exchanger-48gs660003-carrier