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How to Make You Home More Energy Efficient: A Room By Room and Step By Step Design

Geothermal Heating and Cooling February 10, 2010

Filed under: Exterior — greendreamhome @ 11:02 am
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Making the most of Earth’s natural resources can save you money. We’ve already seen how to make the best of solar power above ground. Now let’s look at the steady temperature provided by the sun underground.

Geothermal heating and cooling systems are installed underground. The Earth’s temperature is constant.  This means the system does not have to work as hard in extreme weather to heat and cool your home.

Let’s say the Earth’s temperature is 65 degrees under your home and 100 degrees outside. Since this system is located underground, it only has to covert 65 degree air versus 100 degree air to the temperature you have set by your thermostat. This greatly reduces energy costs.

However, you may be thinking to yourself, will this system also work when it is below freezing outside. Yes, it will. All you have to do is flip a switch to begin heating or cooling. As I have said before, Earth remains a constant temperature. If it is zero outside, the geothermal system is sitting in air which is 65 degrees. Therefore, it is not working as hard to convert zero degree weather to say, 73 degrees inside your home. Instead, the system only has to raise the temperature by eight degrees, which again will save you money.

Since the majority of the system is located underground, the size of the above ground unit is considerably smaller than traditional heating and cooling systems. This unit also does not need a fan, which helps to cut your energy costs as well.

According to Green Heating and Cooling’s website and Rye Home Energy Consulting’s website., there are many benefits to owning a geothermal system. These benefits include:

  • Efficient
    • Saves 40-60 percent off your energy bill
  • Mechanically simple
    • Easier maintenance
    • Greater reliability
  • Long Operating life
    • About 22 years
  • Small unit
    • Unit is enclosed, therefore not exposed to extreme weather climates
  • Quiet
    • Compressor unit can be located outside or inside the home
  • Multifunctional
    • Can heat and cool your home
    • Can heat water as well
  • Solar Energy
    • Uses Earth’s natural resources
    • Cleaner
    • Safer
    • Reduce greenhouse gas emissions by thousands of pounds per year
    • No byproducts

A drawback to these systems is each can run in the thousands of dollars. An average system can cost between $3000 and $5000.

As you can see, there are many benefits to installing a geothermal system. I believe the benefits far outweigh the cost. If you can afford to install a geothermal system, I believe it is the best option to lowering your heating and cooling costs. A geothermal system is 300-400 percent more energy-efficient, which means it is giving back $3 or $4 for every $1 of electricity you put in it.

Here is a great video from Green Heating and Cooling’s website which further explains geothermal systems.

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