Fairfield County Looks to Us for Geothermal Heating & Cooling! We're Nero Air Conditioning and Heating. And we're distinguished throughout Fairfield County, Connecticut, for our geothermal heating and cooling knowledge. Homeowners look to us for ... first-class geothermal system installation and service qualified, highly trained personnel who understand every detail of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most reliable names - WaterFurnace recommendation on how to get the most from their geothermal heating and cooling installation Of course, an important reason people look to us in the first place is for the savings they can appreciate on their energy bills with a geothermal system. Want a look? Give our Geothermal Savings Calculator a go. Then push forward with the next step and contact Nero Air Conditioning and Heating. We'll walk you through more of what makes geothermal systems the premium choice for year-round heating and cooling comfort in Fairfield County.