Geothermal Heating and Cooling / Energy Efficient Heating and Cooling for Dayton, Springfield and all of South West Ohio. Danco Enterprises was founded in 1976 as a solar distributor, but over the years our product line has progressed into geothermal sales, service, and installation. In 1985, we began servicing the Dayton and Springfield areas by distributing the WaterFurnace® line of geothermal systems. Since our inception, Danco has established itself as an industry leader in the eco-friendly, geothermal heating and cooling business by establishing a top quality program, consisting of reliable products and professional services. We offer Dayton area residents a total comfort package – everything from geothermal heat pumps and water heaters to radiant floor heating. We were selected as the WaterFurnace of Ohio Quality Contractor of the Year in 1995 and continue to offer top notch service to our "family" of clients.