Geothermal Heat Pump Resource
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 What Lies Behind the Heat Pump Ground Source Technology?


You may have heard of HVAC systems that operate on sustainable energy, but they are not what exactly what they appear to be.  The heat pump ground source involved in this technology does not actually involve converting sunlight into energy.  It involves storing heat by way of a complex underground system.  The heat comes from sunlight and then settles on the earth.  The constant temperature of the earth is the actual exchange medium.  The outside air temperature has nothing to do with it, and hence you see why it is already a great improvement over fossil fuel technology, which continually burns fuel and pollutes the air. 

Why the Heat Pump Ground Source is Efficient?

 The efficiency level of this heat pump ground source installation is well over three times as efficient as a standard HVAC unit.  The ground temperature is always warmer than the air around it, and so you have a highly sustainable system of heat exchange.  The device that performs the heat exchange (and dissipates the stored heat for cooler temperatures in the summer through a heat sink) is the most expensive part of the setup.  However, you still have to budget in expenses for piping underground as well as ducts throughout the property. 

Just as with traditional systems, the heat pump ground source can be powered by two speed compressors and variable fans for even greater efficiency and coverage.  In addition to green benefits and savings, the advantages of ground supported pump systems lie in their quiet operation, low maintenance and long-term reliability.   


Another option is to find a system that has a dual-source heat pump.  This typically means that you get more energy/heat from a second source, such as water energy.  Unfortunately, while these systems do have superior efficiency than HVAC units, they are not considered as efficient as geothermal technology.  Still, they do work well and are less expensive to install. 

Heat Pump Ground Source Options

The heat pump ground source unit is an investment since you must buy the parts, the piping and ducts, as well as the labour.  This can add up to be a considerable cost, though you will see the savings in approximately five years.  Is this opportunity worth it?  Consider this—these underground systems (provided you work with a quality provider) can actually last much longer than this time frame.  The parts can last 25 years while the ground loop setup can easily last 50 years!

The ground source heat pump unit you choose can have horizontal, vertical or lake-style loops.  The type of loop you deem appropriate will largely be determined by your available land.  The contractor has to consider soil and rock type around the premises.  There is also the closed loop heat pump ground source to consider.  This involves water circulating through the pipes, and collecting heat during the winter.  (Or, reversing the process in the summer and pulling heat from the building and placing it in the ground)  This process actually creates free hot water for you, which is another advantage to consider.

Heat Pump Ground Source Technology


by Phillip Rye -

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