A solid investment. A geothermal heat pumps from NIBE can reduce energy costs by up to 80%. You can also enjoy heat by harnessing the heat of the ground. This free energy source minimizes CO2 emissions and of course belongs to the environmentally friendly renewable energy sources. It remains only to decide whether the free heat you will exploit will come from the heat of the subsoil, from underground water or from the ground under the lawn. The most suitable one is determined by the energy requirement of the house, the existing heating system and the plot. The system will provide you with heating and domestic hot water, while also being able to provide cooling during a hot day.