Here's how geothermal energy heats and cools a home

Some homeowners looking to switch out their heating and cooling systems are turning to home geothermal — also known as ground source — heat pumps. It's a technology that relies on a simple physical fact: Dig several feet below Earth's surface, in the coldest winter or the hottest summer, and the temperature will be around 55 degrees.Geothermal takes advantage of that constant temperature by pushing water with some antifreeze through a loop of flexible pipes that runs deep underground