Geothermal is Big in Harmony! Harmony, Minnesota, residents love geothermal heating and cooling. And why shouldn't they? We've got the ideal soil conditions here. And our fluctuating temperature extremes make geothermal installations the right choice for year-round heating and cooling comfort. Want to find out how much a geothermal system of your own could lower your monthly costs in Harmony? Check out our handy Geothermal Savings Calculator. Then do what so many other Harmony residents do. Contact the experts at Johnson Comfort Systems, Inc.. We'll help you plan your geothermal system, install it right, and make sure you get the service you need to get everything out of it.