How does an EE system work?
Solar energy from the sun is absorbed by the earth. A buried pipe (loop) circulates a fluid (usually ethanol or methanol or other approved fluid) that absorbs this solar heat from the ground and conducts it into the building, where a compressor is used to transfer the heat into warm air (or warm water) and then distributed throughout the building. It is more efficient and environmentally superior to transfer heat than to create it through combustion.
