May be a combination heating/cooling and hot water heating system.
Some can save you up to 50% on your water-heating bill by preheating tank water.
Made of mechanical components that are either buried in the ground or located inside the home
About the same size as a traditional heating/cooling unit
Pipe carries up to a 50-year warranty
Can cut energy consumption by 20 to 50% and reduce maintenance costs
Very quiet, providing a pleasant environment inside & outside the home
No noisy fan units to disturb outdoor activities
No exposed equipment outdoors; children or pets cannot injure themselves or damage exterior units
No open flame, flammable fuel or potentially dangerous fuel storage tanks