Heat pumps use free environmental energy, in this case solar energy, to heat water. This is stored underground, in water and in the air. Thanks to the use of environmental energy, heat pumps are less dependent on primary energy such as oil.
 


This reduces energy consumption by around 40 percent and emission of harmful carbon dioxide are also reduced by some 50 percent.




 
There basically three types of heat pump:
 
Air-to-water heat pump:
The air-to-water heat pump uses air energy at temperatures down to -2C° for heat energy and to head water.It is not as efficient as the geothermal heat pump as the heat effect at too low temperatures is less. It is, however, the solution if your property is situated within a drinking water protection area in which it is not possible to install a geothermal heat pump.
 
Water-to-water heat pump:
In this process, ground water is extracted via a well. This water is then cooled by extracting energy from it. This cooled water is then discharged underground via a second well. In a second step, the heat extracted from the water is fed into the heating circuit of the house.

 
Brine water-to-water heat pump:
With the brine water-to-water- heat pump, geothermal heat is extracted from the ground via sensors and collectors. The heat pump extracts the absorbed energy from the carrier fluid contained in the sensors and collectors and then in turn feeds it into the heating circuit of the house.