How is heat transferred between the earth and the home With A Geothermal Heat Pump?

The earth has the ability to absorb and store heat energy. To use that stored geothermal energy, heat is extracted from the earth through a liquid medium (water or an anti-freeze solution) circulated in the ground via open or closed earth loops and is transferred to the heat pump heat exchanger. There, the heat is used to heat your home. In the summer, the process is reversed and indoor heat is extracted from your home and transferred to the earth through the liquid circulating in the loops underground.