How many times have you looked at your electricity or gas bill and thought, how can they be so high? Nowadays, the energy is an important part of our lives and its time to know how to live with it. The thesis written in this book, shows a different way to provide the energy of a family house, located in Mallorca, using the solar thermal energy as a source of heat and a system that releases the heat from the floor of the building. Therfore, in this book you will find an alternative way to provide the energy of your house, at the same time that you take care of the environment.