The heat demand of this familiy house is 11 kW, so a Junkers heat pump was installed with 10,7+9 kW nominal performance. This heat pump supplies the domestic hot water demand, too and it has a weather-dependent regulator.
Geological conditions: there are sand, gravel, clay and marl and sandstone-layers under soil. There are 2 pieces BHEs with 100 m depth on the primary side of this system. The pipes are single BHE with 40 mm diameter and the primary side is filled with ethylene glycol and water. The grouting material is bentonite-cement. This system utilized 8,3 kW geothermal heat. The heat pump makes domestic hot water in a 165-liter combined tank.
According to the plan this heat pump system was installed by the HGD Ltd.