Elk Rapids Looks to Us for Its Geothermal Needs We’re D&W Mechanical, the distinguished "go-to" team for Elk Rapids, Michigan's geothermal heating and cooling. Elk Rapids homeowners are turning to us for ... the best WaterFurnace geothermal heating and cooling systems highend installation and service from highly skilled, highly trained professionals sound advice on how to get more out of their geothermal installations With a down economy, there's never been a opportune time to put a WaterFurnace geothermal system to use for you. And we're the professionals to do it in Elk Rapids, Michigan. Contact D&W Mechanical today. Want to see just how much "going geothermal" could save you on your energy bills? Take a moment or two with our simple Geothermal Savings Calculator.