We're Kingsley's Primary Geothermal Contractor! Kingsley, Michigan, residents have all sorts of reasons for wanting a geothermal heating and cooling system: phenomenal year-round comfort – no matter how extreme the weather variations stable operating performance energy performance (They’d be hard-pressed to find a more "green," more natural way to heat and cool their homes!) significant – sometimes amazing – savings on their energy bills superior installation and maintenance from D&W Mechanical, Kingsley's geothermal professionals. Discover more about what a geothermal heating and cooling system can do to increase your family's comfort. Look at our Geothermal Savings Calculator. Then contact D&W Mechanical. We sell, install, and service WaterFurnace geothermal systems, the very best in the industry today.