We're the Geothermal Source in Massillon! Massillon residents in the know turn to Sisler Heating & Cooling, Inc. for all their geothermal heating and cooling needs. They place their confidence in us to provide not only the correct installation and service but also the insight to help them maximize the potential from their geothermal systems. Considering a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a whirl. Just load it with your data and marvel at the results. Then, contact us, the Massillon, Ohio, geothermal professionals at Sisler Heating & Cooling, Inc..