Abstract: “The present work analyze the efficiency of using ground source heat pump for inner space heating/cooling and hot water production in new energy-efficient buildings in Romania. Such analysis would be a way to answer to the problems resulting from the continuous increase of energy consumption. The present study describes the building performance of a 2010 construction from Timisoara, designed as an energy-efficient house. The energy consumption of this project was followed for 4 years and a new improvement is planned to be implemented.”

Keywords: sustainable, energy efficiency, green technologies, pilot project.