- Around half of Germany’s homes are heated by natural gas and a quarter with oil.
- In the process of heating a building, heat pumps can cool down groundwater by 4 degrees, or reduce the air temperature outside it by 10 degrees.
- The devices do require additional power to run the electric motor for the compressor, pumps and fans.
Heat pumps: What are they and how do they work? 31.08.2022

