Abstract: A heat exchange device for air conditioners and the like comprising a primary body member of sheet plate material having tubular flow conduit fastened thereto for receiving and containing the flow of fluid such as the liquid/gas used with air conditioners and the like. Projecting pins securely attached to the plate member or members in single or double rows alternately with the tubing material provide the heat exchange improvement. Several different embodiments of the tubing and rows of projecting pins are provided for various type of applications. Another embodiment replaces the tubular flow conduit with a second plate member with the refrigerant flow being between the two plate members.