Benefits

Geothermal systems are usually more comfortable to live with because they eliminate the large temperature swings of conventional air systems. They cost significantly less money to operate and maintain. They eliminate the need for those ugly and noisy external blowing units as well as those unsightly HVAC pipes you often see running down the outside of buildings. Geothermal systems also do not remove needed humidity in the winter months. Although geothermal sounds too good to be true it is not for everyone. Usually this is due to your having needs beyond what geothermal is appropriate for or the price for putting a system in place.

What do I need to use geothermal?
You need a geothermal system. It's a heating and cooling unit that compares to regular HVAC systems. However, instead of burning fossil fuels it quietly transfers excess heat or cold from your building into the Earth. All of the actual heating and cooling is done by the Earth so geothermal systems cost very little money to operate.

What does a geothermal system cost?
This question is not as simple as it sounds. A typical geothermal system usually costs more to install than a standard air heating and cooling system. But, since it is so much less expensive to operate than a standard system as well as offering a comfort level and many more benefits than a standard system, it is often a difficult comparison to make. However, to realistically set your expectations you should plan on outlaying more money up-front but getting an all around better return on your money than any commercially available alternatives. (According to the EPA "Geothermal is the most energy-efficient, environmentally clean, and cost-effective space conditioning system available.")