Frederick A. Costello, Inc. (FAC, Inc.) is a consulting firm offering engineering design, analysis and testing services to a wide range of clients in the government (20%) as well as the private sector (80%). Offer services in the area of electronics packaging; aerospace structures and heat transfer; thermal design and analysis of industrial processes and equipment; energy conservation; and solar heating, cooling and power systems. Firm has developed and markets a suite of thermal analysis software tools called TCON -- state of the art, concurrent engineering software tool that allows the thermal analyst all the benefits of a well developed graphical user interface while maintaining compatibility with accepted and established thermal analysis codes.