My first idea about my thesis was about doing a system that can save energy to an old house. In order to do this, I would choose and old house, situated in my hometown and I would compute all calculations and needs to achieve a good Underfloor Heating and Cooling system. How? On the one hand, I would explain how these systems work. I would try to clarify all the components and its behavior in an underfloor system (type of system, underfloor layers, covers, etc. This would be the theoretical part of my thesis. On the other hand, in order to compute all the system, I would provide a building description.