Newton's Trusted Geothermal Contractor Sherman Co. LLC is the contractor more people in Newton, Iowa, look to for geothermal installation and service. Our specialty is providing ... an experienced work force – professionally trained, highly skilled, and thoroughly educated about all things geothermal solutions for our customer’s most important geothermal questions installation and service of the highest skill We're well-known, too, for offering the top geothermal heating and cooling systems on the market today. Those would be WaterFurnace systems - naturally! If you’d like more information on the benefits of geothermal heating and cooling, check out our Geothermal Savings Calculator. Energy savings aren’t the only benefits, of course. Wait till your family sees the year-round satisfaction a WaterFurnace geothermal system offers! Better yet, why wait? Contact Sherman Co. LLC today. You’ll quickly find out why so many Newton residents are turning to us for their geothermal heating and cooling needs.