Disadvantages of Geothermal Energy

The disadvantages of geothermal energy are few, but one variable can make or break a project. Geothermal energy has many benefits. People that have this system are very happy. Between the green benefits and the cost savings, geothermal energy is a major player in alternative energy. However, as with any alternative energy source there are disadvantages of geothermal energy. Let's explore them.

All alternative energy sources come with a downside related to collecting the energy. The energy source of geothermal energy is located within the earth, below the surface.

While a geothermal heat pump system and installation is twice the cost of a typical gas furnace and air conditioning system. The cost of installation can be a major disadvantage of geothermal energy. It is the one variable that can make or break a project and can range from $4,000 to $30,000. While a geothermal heat pump is an option almost anywhere in the world, the installation of the loop systems, the tubes that are underground are dependent on the soil type, land availability and water source if that is nearby. To really understand what that cost will be for your situation, you will need to have a few estimates from local companies.

In an existing home, the loop installation can be disruptive to your landscape from a little, to quite a lot depending on whether it is a horizontal or vertical installation. Landscape repair will need to be added to your cost structure as you evaluate this technology.

The costs can be offset by savings in electricity, estimates are 30-70% less in electrical costs. If you live in an area where heating and cooling costs are high, this can account for considerable savings. Government, state and community incentives and rebates and even your electric company may have an incentive that will lower your investment by 30% or more.

There are some issues related to installation, low airflow and leaky ducts. These are all issues that can be repaired easily and will be covered under your warranty.

A geothermal heat pump unit will pay for itself; the estimate is 2-10 years, due to the savings on energy costs and maintenance. The warranty on the heat exchanger is usually 10 years and the warranty on the loops is between 30 and 50 years. Your warranty should include both items.

Geothermal energy has been in use for 30+ years, the industry has a lot of experience with installations and the improvements in installing loop systems are quickly changing to make it easier, more affordable and less invasive to your landscape.

When you are considering a heat pump you have to consider both the advantages and disadvantages of geothermal energy. When evaluating any alternative energy source for your home, it's a multi-stepped process. It includes estimates from vendors, government, state, community and electric company incentives and rebates, it includes cost savings, savings on maintenance and longevity of the system. Some things are hard to quantify in dollars and cents, quiet and consistent heating and cooling, no cold or hot spots, and the dryness in the air from tradition heating systems - you won't miss that.

If heating and cooling represent a large portion of your electric bill, explore a geothermal heat pump as a solution to your high electric bills. You now know what questions to ask.

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