Increasing demand for energy and the shrinking of natural resources necessary for its production have led to the introduction of a wide range of activities and research about saving energy and using alternative sources. The industry in which such research is sensible is the founding industry, an industry of high energy demand. Energy use includes melting, heating, and keeping constant temperature of liquid metal, cooling the cast, and ventilation. At present it seems justified to regain the energy lost during the foundry process. However, before such research starts it is vital to establish the areas of greatest heat emission during the production process in the foundry. One way of getting such data is to use a thermo-vision camera.