Residential geothermal heat pumps are commercially available. Generating electricity is possible but less practical. Using it to heat and cool your home without

Residential geothermal heat pumps are commercially available. Generating electricity is possible but less practical. Using it to heat and cool your home without fuel is very doable. https://www.energy.gov/energysaver/choosing-and-installing-geothermal-heat-pumps https://www.energy.gov/energysaver/choosing-and-installing-g...