The Institute of Energy Engineering of the Universtat Politècnica de València (IIE-UPV) has a long experience in research and development of components and equipment for refrigeration, heat pump and air conditioning, as well as on the integration of these systems in the building. The main specialties of our laboratory are natural refrigerants, especially hydrocarbons, geothermal systems, and refrigeration equipment for appliances. Another specialty of the IIE is the modeling of thermal systems of any type, highlighting the IMST-ART software, which allows the design and optimization of vapor compression refrigeration equipment.