How Does Geothermal Heating and Cooling Work?
Geothermal heating and cooling systems work much differently than how a traditional furnace heats. A furnace burns fuel to create heat, whereas a geothermal heat pump exchanges heat between the ground or water source and the air to heat the home. Because the temperature below ground stays constant around 50 to 60 degrees year-round, it can be used as a heat source. The fluid within the ground loop absorbs the heat from the Earth, then cycles it to the heat pump where its heat exchanger transfers the heat from the fluid to the air.
The geothermal cooling process is very similar to the way an air conditioner or air-source heat pump works. Heat is absorbed from the air inside the home and moved away. While air conditioners and air-source heat pumps release heat into the air outside, a geothermal heat pump uses the ground as its heat sink. It releases heat underground or into a body of water, depending on the loop configuration.
Benefits of Geothermal Heating and Cooling
Now that you understand how geothermal heating and cooling works, let’s take a look at why this system is preferable versus other HVAC options.
- Lower operating costs – Geothermal systems do not burn fossil fuel to generate heat; they simply transfer the heat to and from the earth to provide a more efficient and environmentally friendly method of heating and cooling. Only electricity is used to operate these systems. Geothermal HVAC is very affordable to run, allowing homeowners to save ~70 percent on monthly energy bills.
- Environmentally friendly – Because they consume no fossil fuels and boast highly efficient electricity use, geothermal heating and cooling is a more environmentally friendly option for indoor comfort.
- Long equipment life – Geothermal heating and cooling systems last longer than conventional HVAC equipment. While geothermal heat pumps last about as long as a conventional air conditioner (12 to 15 years) the ground loop components can last over 50 years! The loop is well protected within the earth and is not easily damaged.
No Days Off
Not only does geothermal heating and cooling lower your carbon footprint, it also provides you with a sense of security. Geothermal takes no days off. It will work for you 24 hours a day and 365 days per year. Regardless of the time of day, the temperature outside, the weather forecast, or what season it is, geothermal heating and cooling will keep your home secure. Geothermal is there when you need it to keep your home at a comfortable temperature for you and your family. You will never have to worry about the climate, time of day or season. Geothermal heating and cooling is always there for you.