You drill down per se to where the earth is a constant 55 degrees. With pumps and heat etc you can heat or cool that air.
The US now has a corps of skilled geo-exchange engineers and tradesmen. That’s in thanks to the stimulus act of 2009. As well as the homeowners who now have more access to information about designing an energy-efficient home. Geothermal has an impressive 30 percent tax credit implemented at the federal level. In conclusion, U.S. homeowners need to pay the up-front cost. Finally, find a trustworthy contractor to install a geothermal HVAC system.
Nowadays, the U.S. Department of Energy released a groundbreaking analysis detailing how the United States can benefit from the vast potential of geothermal energy.
The analysis culminated in a report, GeoVision: Harnessing the Heat Beneath Our Feet. This report summarizes findings showing that geothermal electricity generation could increase more than 26-fold from today. Thereby reaching 60 gigawatts (GW) of installed capacity by 2050. In addition to describing electricity-generation opportunities, the GeoVision analysis also shows how geothermal can enhance heating and cooling solutions. That’s for American residential and commercial consumers through direct-use and heat-pump technologies.
For the entire story on Geothermal for Homes on the NatGeo blog