Green Hill GeothermalWarrenton, Virginia, United States

Green Hill Geothermal is a family owned and operated geothermal heating and cooling company started in March 2011 by brothers Gregg and Thom Drunagel. Green Hill Geothermal is a family owned and operated business founded in March 2011 by brothers Gregg and Thom Drunagel. Being a Class A contractor possessing a Master’s Mechanical License, Green Hill at the time of startup, possessed 25 years of HVAC, plumbing and geothermal experience between the two of them. Based on the opportunities available to the consumer by using geothermal technology, Gregg and Thom decided to put their efforts into helping others benefit from the knowledge they have gained over the years.