Geothermal energy is pretty amazing: by circulating water through a series of pipes under your house, you bring the warmth of the earth up in the winter, and force heat and humidity down during the summer. As the geothermal system (also known as a ground source heat pump -- which is technically more accurate, because this form of heating and cooling captures solar heat trapped in the earth's surface rather than tapping geologically active areas deep beneath the Earth's crust for heat) constantly counterbalances in synch with the seasons, you save a ton of money on energy costs, and you're not using very much energy beyond that needed to handle the pumping system.  See full article.

  Geothermal energy is pretty amazing: by circulating water through a series of pipes under your house, you bring the warmth of the earth up in the winter, and force heat and humidity down during the summer. As the geothermal system (also known as a ground source heat pump -- which is technically more accurate, because this form of heating and cooling captures solar heat trapped in the earth's surface rather than tapping geologically active areas deep beneath the Earth's crust for heat) constantly counterbalances in synch with the seasons, you save a ton of money on energy costs, and you're not using very much energy beyond that needed to handle the pumping system.  See full article.