Middlesex County, Connecticut, Geothermal Heating & Cooling We're spreading the word throughout Middlesex County, Connecticut: in in the condition the economy is in today, geothermal heating and cooling is absolutely the smart way to go! Soil conditions in Middlesex County are just right. And our seasonal temperatures? They fluctuate enough in extremes to almost guarantee that geothermal heating and cooling will offer the best year-round comfort. You'll love how much a geothermal system can cut your energy costs, too. The proof? Our Geothermal Savings Calculator. Contact Nero Air Conditioning and Heating today. We've got quite a bit more to discuss with you about the benefits of geothermal heating and cooling in Middlesex County. Another great thing, we install and service WaterFurnace geothermal systems, the finest on the market.