Bainbridge Island Looks to Us for Geothermal Heating & Cooling! We're Thermal Systems. And we're recognized throughout Bainbridge Island, Washington, for our geothermal heating and cooling knowledge. Residents turn to us for ... superior geothermal system installation and service experienced, highly trained personnel who know every aspect of geothermal heating and cooling - and know how to effectively communicate the process to you geothermal systems from one of the industry's most trusted names - WaterFurnace recommendation on how to get the most from their geothermal heating and cooling installation Of course, a significant reason people turn to us to begin with is for the savings they can realize on their energy bills with a geothermal system. Want a snap shot? Give our Geothermal Savings Calculator a go. Then push forward with the next step and contact Thermal Systems. We'll walk you through more of what makes geothermal systems the best choice for year-round heating and cooling comfort in Bainbridge Island.