HOW GEOTHERMAL WORKS
An energy exchange heating and cooling system is able to provide a comfort level that is equivalent or better than the alternative heating systems, such as natural gas, electric, or wood.
A geothermal heating and cooling system works by exchanging heat energy between your home and the earth. As Newton stated, energy cannot be created nor destroyed, but a Geothermal System is able to capture the energy (heat) from the earth and transfer the heat into your home to provide an economical and environmentally friendly form of heating (and cooling).
The earth is able to absorb and store heat energy from the sun. Heat is extracted from the earth through a liquid and is pumped to the geothermal heat pump. The heat pump concentrates the heat and increases the temperature, so it can be distributed through your home. A geothermal system can also be used in reverse to cool your home. This enables heating and air conditioning of your home at efficiencies exceeding 300% with a Geothermal System.
Below frost line (typically 4 feet below grade in Prince George, BC), the Earth’s surface remains a nearly constant temperature of between 5 and 10°C. In winter, geothermal heat pumps draw this heat energy from the earth, using a series of underground pipes, and transfer it to buildings, warming them. In summer, the geothermal heat pumps work in reverse, taking excess heat from inside the building and discharging it into the cooler earth. Because the earth itself supplies the renewable thermal (heat) energy, the only energy requirement to operate a Geothermal Heating and Cooling System is a small amount of electricity to run the ground source heat pump.
A Geothermal System is also known as geoexchange, earth energy, energy exchange, or ground source heat pumps. A Geothermal Heating System should not be confused with Geothermal Energy, which is harvested by large power plants to generate electricity from the earth’s heat. A Geothermal Heating System is used to transfer heat from the earth into your home by use of a Ground Source Heat Pump.
An energy exchange heating and cooling system is able to provide a comfort level that is equivalent or better than the alternative heating systems, such as natural gas, electric, or wood. A geothermal system uses the same principles as a refrigerator, only in reverse, when heating your home.
A Geothermal Heating and Cooling System can be designed to provide 100% of your home’s heating requirement, even during the cold winters of Central and Northern BC. The key to a successful Geothermal Heating System is a proper Design and Installation to match the heating load of the house.
A Geothermal Heating and Cooling System is comprised of three smaller systems that work together to provide heat and/or air conditioning to your BC home: