1. Double rotary drilling or drilling using supporting fluid through low-consolidated layers of soil
2. Drilling through rocky layers using the adapted drilling tools
3. Installation of the geothermal probe into the borehole
4. Cementation of the geothermal probe in the borehole and recovering of any temporary casing tubes
5. Connection of the probe to the collector and the heat pump. Functioning of the geothermal system for heating or cooling