We're the Geothermal Source in Loudoun County! Loudoun County people in the know look to Renewable Energy Solutions for all their geothermal heating and cooling needs. They place their confidence in us to give not only the correct installation and service but also the experience to help them maximize the potential from their geothermal systems. Considering a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a try. Just enter your data and stand in awe of the results. Then, contact us, the Loudoun County, Virginia, geothermal experts at Renewable Energy Solutions.