Water can be saved by using water-saving taps in the showers. Only the existing refrigeration system was retained. An electric ice-service machine was also bought. The air-handling unit provides heating, ventilation and dehumidification. Heating is primarily generated through heat-recovery from the compressor.
Additional energy comes from the district heating network.
The compressor ensures dehumidification. Outdoor air flow rates are controlled by the CO 2 contents, relative humidity or indoor air temperature. The entire system is monitored by a building automation system, which controls indoor conditions and optimises energy economy. The estimated annual saving is FIM 68,000. Full advantage of the innovative envelope and modern automation is hampered by the old, inefficient compressor, but the fairly low heat load can be seen by comparing the average temperature of the brine.