The earth absorbs almost 50% of all solar energy and remains a nearly constant temperature of 50ºF to 60ºF depending on geographic location. Working with an underground loop system, geothermal heating & cooling systems utilize this constant temperature to exchange energy between your home and the earth as needed for heating & cooling. In winter, water circulation inside a sealed underground loop system absorbs heat from the earth and carries it to the geothermal unit. Here it is compressed to a higher temperature and sent as warm air to your home. In the summer, the system reverses and expels heat from your home into the cooler earth via the loop system. This heat exchange process is not only natural, but is a natural and highly efficient way to create a comfortable climate in your home. There are several loop configurations available. They can either be vertical, horizontal, or submerged in a nearby pond or lake. In some cases, a water well can be used instead (open loop). The best application will depend on the characteristics of your property. Your salesperson can show you which type of loop system is best suited for your home.