Emission and distribution are the same for three cases. For distribution, it consists in cold water and hot water pipe network. Pipe losses are taken into account as well as pumps consumption (80% of pipe losses are recovered by building). Pump for hot network is only operating when there is a heating demand while cold network pump is always operating. Fan Coil Units (FCU) are installed for cooling and heating emission, fans are only in use in case of cooling or heating demand. The number of fan coil units is based on maximum cooling or heating load. There are 25 FCU for each floor (7 in meeting room and office South, 11 in office North).