Canyon Lake Looks to Us for Its Geothermal Needs We’re Southwest Mechanical Services, the recognized "go-to" team for Canyon Lake, Texas's geothermal heating and cooling. Canyon Lake homeowners look to us for ... the best WaterFurnace geothermal heating and cooling systems the best installation and service from highly skilled, highly trained professionals professional advice on how to maximize the potential of their geothermal installations With a down economy, there's never been a better time to put a WaterFurnace geothermal system to work for you. And we're the ones to do it in Canyon Lake, Texas. Contact Southwest Mechanical Services today. Want to see just how big "going geothermal" could save you on your energy bills? Take a moment or two with our easy Geothermal Savings Calculator.