Geothermal systems use the free, renewable energy from the earth, so the technology is one that can have a positive effect on your carbon footprint. In fact, according to the Geothermal Heat Pump Consortium, installing a geothermal system instead of an ordinary system is the environmental equivalent (in emission reduction) of taking two cars off the road or planting an acre of trees.
And because of improved electrical energy efficiency, geothermal systems reduce the need to build additional costly, fuel burning power plants. It's clean technology – geothermal units produce no on-site emissions.
There are over 1 million geothermal installations today, resulting in the avoidance of more than 5.8 million metric tons of carbon dioxide and more than 1.6 million metric tons of carbon equivalent annually. In addition, existing geothermal installations are the environmental equivalent (in emission reduction) of taking 1.2 million cars off the road, or planting more than 385 million trees.