Geothermal is Big in Silver Lake! Silver Lake, Indiana, residents love geothermal heating and cooling. And why shouldn't they? We've got the perfect soil conditions here. And our changing temperature extremes make geothermal installations an even better 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 Silver Lake? Check out our handy Geothermal Savings Calculator. Then do what so many other Silver Lake residents do. Contact the experts at Gast Heating & Cooling Inc.. We'll help you plan your geothermal system, install it right, and make sure you get the service you need to get the most out of it.