The term "open loop" is commonly used to describe a geothermal heat pump system that uses groundwater from a conventional well as a heat source. The groundwater is pumped into the heat pump unit where heat is extracted, then the water is disposed of in an appropriate manner. Since groundwater has a relatively constant temperature year round, it is an excellent source of heat.

You must have a large volume of water to use an open loop system. You typically need about 7-15 gallons of water per minute. This will depend on the size of system required to heat your home. The water can be pumped from one well to another well or pond. This replenishes the aquafier. The only thing that happens to the water is that heat is taken from the water or injected into the water.

Another type of heat source is a closed loop system.

Your site will need to be evaluated to determine which system is best for you. For more information contact Bryan Berguson at: 570-724-3516.

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