Geothermal Systems Overview
The geothermal heat pump system utilizes sun's energy stored in earth. Throughout the year, outdoor temperatures fluctuate with changing seasons; However, underground temperatures several feet below the ground do not change. In fact, at about four to six feet below the earth's surface temperature remain relatively constant year-round! For eastern Ontario the earth temperature is typically around 10°C. The constant temperature is due to the fact that earth is a very good heat insulator.
A geothermal heat pump system takes advantage of these constant temperatures. In the winter time, the ground is used as a pre-heating measure to lower the heating load compared with cold air taken from outside of the house. In the summer time, the same 10°C ground becomes the cooling source for the house. The geothermal heat pump effectively removes heat from your home and into the ground.
The free energy from earth reduces the amount of electricity, natural gas, or gas that we currently use for heating and cooling your home. A geothermal heat pump can save money on your home heating and cooling costs by 60-75% annually.