https://www.youtube.com/watch?v=NiNPhFqxODU&feature=related
https://www.youtube.com/watch?v=e1r7fXO0QII&feature=related
These are two videos that explain the principles of geothermal energy application in building heating and cooling. As you will find out from one the videos, this energy source can be applied for any building type and in different climatic zones, therefore it is an extremely powerful way for receiving energy.
