Geothermal Heat Pumps

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Heat and Cool Your Home the Geothermal Way

The Department of Energy (DOE) and the Environmental Protection Agency (EPA) have both endorsed geothermal heat pump systems as among the most energy efficient, environmentally clean, and cost effective systems for temperature control. Homeowners can expect to enjoy a comfortable, reliable, and economical system while also reducing energy use and pollution. This lens provides an overview of geothermal heat pumps and describes why they are becoming so popular. Hopefully you will realize the great benefits it can have for you, your home, and the environment!

What is a geothermal heat pump? 

ge·o·ther·mal: of or using the heat of the earth's interior

Above the ground we can expect to experience dramatic temperature changes throughout the year. However, just a few feet below the Earth's surface the temperature remains more constant at around 45 to 75 degrees Fahrenheit. A geothermal heat pump takes advantage of these more mild temperatures through a series of pipes and a heat exchanger.

In winter it collects the Earth's natural heat through a series of pipes, called a loop, installed below the surface of the ground or submersed in a pond or lake. Fluid circulates through the loop and carries the heat to the house. There, an electrically driven compressor and a heat exchanger concentrate the Earth's energy and release it inside the home at a higher temperature. Ductwork distributes the heat to different rooms.

In summer, the process is reversed. The underground loop draws excess heat from the house and allows it to be absorbed by the Earth. The system cools your home in the same way that a refrigerator keeps your food cool - by drawing heat from the interior, not by blowing in cold air.

As with any heat pump, geothermal and water-source heat pumps are able to heat, cool, and, if so equipped, supply the house with hot water. Some models of geothermal systems are available with two-speed compressors and variable fans for more comfort and energy savings. They are smaller than a traditional heating/cooling unit and can easily be retrofitted into any home.

Geothermal Energy Is Great!! 

Helping you see the light

There has never been a better time to invest in a geothermal heat pump system. When you consider the durability, comfort, cleanliness, and energy savings it is obvious why the government has endorsed them as the best systems for temperature control!

  • Excellent Efficiency - With efficiency ratings at least three times higher than other heating and cooling systems it is estimated that you can save between 30 to 70% on heating and cooling costs.

  • Eliminate Emissions - These systems do not have on-site emissions or flammable materials. By eliminating any combustion you do not have to worry about fumes, odors, or carbon monoxide in your home.
  • Energy Savings - While investing in a geothermal unit is initially more expensive than a traditional system, the annual savings on energy bills more than compensates for the initial output and you can usually expect full payback in three to five years.
  • Low Environmental Impact - According to the U.S. Department of Energy, if just 100,000 homes converted to a geothermal heating and cooling system, carbon dioxide emissions could be reduced by 880 million pounds. Currently, atmospheric CO2 is 30% higher than it was 200 years ago and if not reduced can cause serious detrimental global impacts. Geothermal technology offers a wonderful solution to lowering these greenhouse gases.

  • Improved Humidity Control - Geothermal heat pumps provide better humidity control than a tradition system, thus there is a reduced chance for mold and mildew growth. These systems are ideal for individuals will allergy problems or lung problems.
  • Unsurpassed Comfort - These systems do not have fans, so instead of hearing and feeling blasts of air, you will enjoy a quiet, consistent temperature throughout the day.
  • Low Maintenance - According to a study conducted for the Geothermal Heat Pump Consortium (GHPC), the maintenance costs are about one-third the cost of conventional systems. In fact, the only work necessary involves occasional cleaning of the heat exchanger and regular changing of the air filters.
  • Durability - The underground loops carry warranties of 25 to 50 years. The pumps, which are safely located within the home, often last 20 years or more.
  • Reduced Vandalism - The mechanical components are safely located underground or within the home - which eliminates fears of vandalism or theft.
  • Customer Satisfaction - In a customer survey based on heating systems, geothermal heat pump users report higher customer satisfaction than any other customers surveyed.

  • Tax Credits - Also, recent Congressional legislation has provided a 30% tax credit for the installed cost of a residential heat pump system, no cap!

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Find Out More! 

Geothermal Overview
Provides valuable information about residential and commercial geothermal systems.
Tax Credits
Energy Star shows you how to qualify and what tax credits you will be eligible for.
EPA Information
Brochure by the Environmental Protection Agency about geothermal heat pumps.
Heat Pump Systems
Description and explanation of the parts and functions of a heat pump system.
U.S. Department of Energy
U.S. Department of Energy's endorsement and description of these systems.
Look For Additional Tax Incentives
Look up what other incentives and rebates may be available in your state.
Egg Systems
Geothermal information pertaining to the southeastern part of the country.

See It In Action! 

Geothermal

A quick introduction to Geothermal Heating and Cooling.

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by HenryE

In the Spring and innocence of 1941, Theron John Egg formed Theron Egg Plumbing in Soda Springs Idaho. It was a less complicated time before World War... (more)

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