Geothermal Heat Pumps

house heatAn optional way to heat the home is with a Geothermal heat pump. They are similar to the common heat pump except that they use the natural elements of the earth for heating, such as the ground or outside air.

The plus side of getting a Geothermal heat pump is the efficiency because of the use of the ground. It works by trading off heat with the ground through a with a ground heat exchanger system.

These systems also have the ability to cool your home and even provide hot water if they are equipped to handle that load. Geothermal heat pumps generally require less maintenance, and last a lot longer than common heat pumps.

When preparing to buy or have a Geothermal heat system installed there are several types of systems you may come across. Below we have defined what they are and how they work.

  • Closed Loop System – This is a ground heat exchange system which has heat transfer fluid permanently fixed into the system.
  • Open Loop System – A ground heat exchanger system that has heat transfer fluid works with a larger environment including surface water.
  • Direct Expansion -In this system, refrigerant circulates through the pipes underground rather than using a heat transfer fluid.

Studies have shown that 70% of the energy used by Geothermal heat pumps is renewable energy. While this may be the choice you have already decided on, you may be wondering what type of unit is best for your home.

This will much depend on the surroundings and space in your area. A horizontal closed ground loop is usually best for homes that have a decent amount of yard space, and a soil which can be dug up easily.

A vertical closed ground loop is usually best for homes with very little yard space, and where ground is rocky or difficult to dig into.

If you have a pond near by the most economical and efficient installation would be the closed pond loop. This allows for a more free movement of underground liquid for heating.

While all the previous mentioned were closed loop systems, you will want to check even further with a local builder and expert for what is commonly used in your area before choosing. But one thing is for sure, and that is that you will be investing in a system that will have a long and worthwhile lifespan for the heating and cooling of your home.

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