About WaterFurnace Your Top Geothermal Source in Denver You can count on WaterFurnace for all your WaterFurnace Denver geothermal heating and cooling needs, including... planning assistance. complete comfort system installation. routine service and maintenance. emergency repair. energy-saving advice and consultation. Giving total customer satisfaction is our highest priority in the Denver area, and our highly trained professional staff will see to that.It's hard not to be satisfied when you pick the best heating and cooling system in the industry today. We will see to it that your new system meets all of your demands, helping you to reduce your energy costs and increase your home's conditioning efficiency. Contact WaterFurnace today to get a free estimate and a cost savings analysis for your home.