many people live in modern days think in able to use geothermal energy, you should live near by a hot spring or geyser. That is not true. You can live wherever you want in the United States and and still use geothermal energy to heat or cool your house. Geothermal cooling system comes from ancient egy The system that is used is called geothermal heating pump but can use not just to heat the house but also cool it. Geothermal heating pumps use the constant temperature of the earth as the exchange medium instead of outside air temperature. This allows the system to reach fairly high efficiencies (300%~600%) on the coldest of winter nights, compared to 175%~250% for air source heat pumps on cool days. With geothermal heating pumps could heat, cool, and provided hot water to the house. The cost is pretty big but the energy save will return the cost in 5~10 years. The system last for about 25 years inside component and 50+ years for the ground loop. There are about 50,000 geothermal cooling/heating system installed in United States. This system is origin in ancient Egypt, which provided them cool water and air for the dry and hot dessert. This technology offer hope in the future because it doesn't produce any if the green house gas or carbon dioxide. It also doesn't use any of other energy beside electricity. This will help with the carbon sink problem and global warming by provided less carbon dioxide and green house gas. "The heat pump was described by Lord Kelvin in 1853 and developed by Peter Ritter von Rittinger in 1855. After experimenting with a freezer, Robert C. Webber built the first direct exchange ground-source heat pump in the late 1940s. The first successful commercial project was installed in the Commonwealth Building (Portland, Oregon) in 1948, and has been designated a National Historic Mechanical Engineering Landmark by ASME. The technology became popular in Sweden in the 1970s, and has been growing slowly in worldwide acceptance since then. Open loop systems dominated the market until the development of polybutylene pipe in 1979 made closed loop systems economically viable. As of 2004, there are over a million units installed worldwide providing 12 GW of thermal capacity. Each year, about 80,000 units are installed in the US (geothermal energy is used in all 50 US states today, with great potential for near-term market growth and savings) and 27,000 in Sweden. In Finland, a geothermal heat pump was the most common heating system choice for new detached houses between 2006 and 2011 with market share exceeding 40%".