Geothermal energy is produced by the heat that lies within the earth. A Geothermal System uses the earth’s energy to transfer heat between your home and the ground using a geothermal heat pump and specialized loops buried underneath the ground.

How Does a Geothermal Heating & Cooling System Work?

Geothermal systems use renewal solar energy stored in the ground to heat and cool your home 365 days a year. The ground remains a constant temperature year round. This constant temperature is higher in the winter and lower the summer.
In the Winter when the house is cool, the geothermal heat pump pulls heat from the ground and transfers that heat inside your home. In the summer, the heat pump pulls heat from inside the home and dumps it outside while transferring cooler ground temperatures inside in order to make your home feel cool and comfortable.


Geothermal Heating & Cooling Questions & Answers

What can geothermal systems be used for?
Geothermal systems can be used to heat and cool your home or business. The system can also be a hot water supply and heat the floors in both residential and commercial buildings.

What are the primary components of a geothermal system?
There are 3 primary components of a geothermal heat pump system.

  1. the geothermal heat pump
  2. underground pipes called geothermal loops or ground loops and
  3. ductwork

A Geothermal heat pump is a renewable alternative to a furnace or boiler system. A typical heating system such as a furnace or boiler creates heat by burning fuel such as natural gas or propane in a combustion changer. A geothermal heat pump uses the ground’s constant temperature to exchange heat to and from the ground.
Geo loops or ground loops are buried under the ground. The loops contain a fluid mixture of water and a small amount of antifreeze to assist in the transfer of heat. There are two types of ground loop systems. Closed loop systems and open loop systems. The most commonly used geothermal loop system in the Rockford area is a closed ground loop system. Closed ground loop systems can be installed vertically, horizontally or by a pond or lake.

How efficient is geothermal energy?
Geothermal is the most efficient way to heat and cool your home or office space. Heating, cooling and hot water make up approximately two thirds of total energy used in a home, so considering a geothermal system has the biggest potential for saving on energy consumption.
The typical high efficient furnace is around 96 percent efficient. A geothermal system is 400 percent efficient because it doesn’t produce heat, it simply transfers heat from the ground.

What does a geothermal system look like?
A typical heating and air conditioning system may consist of a furnace and an air conditioner. The furnace is generally placed in the basement or the attic of the home. The air conditioner condenser is placed outside of the home.
The geothermal heat pump tends to look like a furnace and would generally go in place of where your current furnace or boiler is located. The outdoor condenser would be eliminated.

Do geothermal systems need maintenance?
Geothermal systems do not require much maintenance. There are a few things that can be done to assist in keeping the system in good condition.

  1. Change filters regularly. Changing the filter regularly will improve air quality, but it’s also important in allowing air to flow through the system.
  2. Check your thermostat to ensure there aren’t any default codes
  3. Check your drain pan. Make sure water dripping into the drain pan is normal and that the drain is free of debris.

How much does a geothermal system cost?
Geothermal systems do have a higher upfront cost. It could cost several times the amount as a traditional heating and cooling system.

How long does a geothermal system last?
According to the department of energy, a geothermal heat pump has a life expectancy around 20+ years

How long do geothermal ground loops last?
Ground loops last between 25-50 years.

Do heat pumps use electricity?
Yes. Heat pumps do use a small amount of energy. Therefore, the heat pump will not work if there is no power source.

What geothermal heat pump rebates are available?

Geothermal system rebates are as follows.
ITC credit from the Federal government is 30% off the system price.
ComEd Rebates: Geothermal Heat Pump: Up to $6,000 discount per home and Geothermal (ground source) Heat Pump Indoor Unit Replacement are eligible for rebates between $800-$1200.

Does every heating and cooling contractor install geothermal systems?

No. Not every HVAC contractor is qualified to install geothermal systems. Geothermal is a highly specialized area of heating and cooling and requires specialized training and certifications.
Temperature Doctors is a certified geothermal installer and member of the Geothermal Alliance of Illinois.

Benefits of Geothermal Heat pumps

  • Reduces energy use by 70-80%
  • Controls humidity levels
  • Constant and reliable – the earth never runs out of energy
  • Small footprint
  • Clean energy
  • Quiet
  • Last longer and need little maintenance

Request an Appointment for Geothermal in Rockford

While a geothermal HVAC system in Rockford is a substantial investment, it can also be a superb solution for energy-efficient heating and cooling. The HVAC experts at Temperature Doctors Heating & Cooling can offer some of the best geothermal installers in Rockford. They’ll direct you on the path to success. To request an appointment or free quote, get in touch with us today at (815) 914-6197.

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