Benefits and Drawbacks of a Geothermal HVAC System

Are you constructing a new home or just making adjustments to an already existing one?

Then, choosing a new cooling and heating system and is something you would want to consider carefully. A Geothermal HVAC system is one of the options you might want to invest in. A Geothermal HVAC system is such that harnesses the fairly stable temperatures of the earth to make your home comfortable. In more clear terms, heat energy is transferred between the ground and your home by utilising the earth as a heat source during winter, and a heat sink during summer. A special type of pump is used to achieve this, and oftentimes, solar heating is paired with Geothermal systems to improve overall system efficiency.

Is Geothermal HVAC system right for you?

It then becomes necessary that you familiarise yourself with the benefits and drawbacks of this form of cooling or heating your home.


  1. Safe to use

Unlike some HVAC systems which burs gas or oil to generate heat, Geothermal HVAC systems do not use combustion. This infers that there is a zero (0) percent discharge of a deadly gas such as carbon monoxide.

  1. Eco-friendly

Geothermal energy is a clean renewable resource for cooling and air conditioning and heating and it is insignificant as a pollution source. Hence, it does not help to bring about global warming and it has the smallest carbon footprint.

  1. Reliability

Unlike conventional HVAC systems that are susceptible to environmental factors such as wind, rain and snow, a Geothermal system is an exception; the system functions reliably for a long period.

  1. Energy Saving

In comparison with conventional cooling and heating systems, a geothermal HVAC system saves you about 20-50% on cooling cost and 30-60% on heating cost. Their electrical power consumption is lower compared to other conventional systems.

  1. Noiseless

Unlike other HVAC systems, that has noisy outdoor fan or compressor, geothermal systems are noiseless outside and their indoor unit sounds more like a new refrigerator.

  1. Longevity and Low Maintenance

The service life of a geothermal system can be up to 50 years provided it is rightly designed, built and installed. If you are planning to reside in your home for many years, then a geothermal system will be a sound and reasonable investment. A geothermal system has minimal maintenance problems because they have fewer moving part than other systems.



  1. A major drawback is its initial cost which is usually within the range 10,000-20,000$.
  2. Most suitable for new buildings as retrofitting would involve excavation on a large scale
  3. It is a fairly new system and only a few installers are available. This might lead to maintenance difficulties.
  4. Although durable, fixing underground piping networks could incur serious financial implications.
  5. The installation of a geothermal HVAC system disrupts landscape.
  6. If you are planning to completely stay off the grid, setting up a Geothermal system might cost you some more bucks because they require electricity to function.


Could Geothermal HVAC systems provide the adequate cooling and heating that you desire? Having read through the pros and cons, I am sure by now you know if it’s best for you. Although not perfect, its many benefits make it a worthwhile investment. In case you are in doubt, contact a certified HVAC Technician today for advice.

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