Geothermal and the Tennessee Valley Environment Worried about the environment? Sure, we all are. By choosing a geothermal product you produce no harmful greenhouse gasses such as carbon monoxide into your environment. Your family's safety is a primary concern to you and we understand that. Providing a place of comfort and protection for your family goes hand in hand. You can have both when you choose geothermal. Here are some agencies that agree. The EPA (Environmental Protection Agency) and the DOE (Department of Energy) confimed that geothermal heat pumps are the most environmentally safe and cost-efficient way to condition your home. So now you know WaterFurnace units are truly a natural, green way to live.