We're Pentwater's Primary Geothermal Contractor! Pentwater, Michigan, homeowners have all kinds of reasons for desiring a geothermal heating and cooling system: phenomenal year-round comfort – no matter how crazy the weather variations smooth operating performance energy efficiency (They’d be hard-pressed to find a more "green," more natural way to heat and cool their homes!) significant – often outstanding – savings on their energy bills noteworthy installation and service from Adams Heating & Cooling II, Pentwater's geothermal professionals. Learn more about what a geothermal heating and cooling system can do to improve your family's comfort. Look at our Geothermal Savings Calculator. Then contact Adams Heating & Cooling II. We sell, install, and maintain WaterFurnace geothermal systems, the finest on the market today.