- Low maintenance requirements and user-friendly operation
- No extra above-ground space required, depending on installation
- Constant supply of energy, independent of climate, season and weather conditions
- Versatile: provides heating in the winter and cooling in the summer
Directly beneath the Earth’s surface, prevailing temperatures are in the region of 8 to 12 degrees Celsius. Using near-surface geothermal energy systems, heat pumps can collect this energy and transfer it for specific purposes, e.g. to warm heating and drinking water or to generate cooling energy. Ambient air and ground water can also be used as heat sources.
In new building projects in particular, various heat pump technologies are becoming increasingly attractive because they provide climate-friendly heat throughout the year. They can also be used for air-conditioning during the summer months. A heat pump is much more efficient than a conventional air-conditioning system. The pump saves the heat that it extracts from the building during the summer underground and then uses this to heat the building in winter.
In Germany, the use of heat pumps is funded subject to the fulfilment of certain criteria. As a result, domestic heat pumps using natural coolants already enjoy a market share of five percent (see , in German). Heat pumps are installed in 30 percent of new builds (see , in German). As a result, German companies are experienced in the installation and maintenance of all types of heat pump technologies.