I will create two projects that are very similarn in nature. The first (Solar water heating system) is a heating system situated on an island called Vlieland in North of Holland near Leeuwarden. The system function is to create sanitary hot water and floor heating by using thermal solar energy and natural gas. The second project (heating and cooling system) is a system that is installed in my university called Hogeschool NHL. This system is reversible and is capable of producing hot and cool air. Geothermic energy and natural gas are required for this function. In both of the projects I will study the system, all of the components and monitor the efficiency. I will be able to view all of the important data in a specialized program. The projects purpose is to improve system efficiency.