Fox Island Looks to Us for Its Geothermal Needs We’re Thermal Systems, the distinguished "go-to" team for Fox Island, Washington's geothermal heating and cooling. Fox Island homeowners are turning to us for ... the finest WaterFurnace geothermal heating and cooling systems expert installation and service from highly skilled, highly trained professionals sound advice on how to maximize the potential of their geothermal installations With a down economy, there's never been a better time to put a WaterFurnace geothermal system to use for you. And we're the experts to do it in Fox Island, Washington. Contact Thermal Systems today. Want to see just how much "going geothermal" could save you on your energy bills? Spend a moment or two with our easy Geothermal Savings Calculator.