Duncklee Cooling & Heating is the premier HVAC company in Stonington, CT. For over 50 years, this family owned and operated business has provided the Eastern Connecticut and Rhode Island area with top-notch heating and cooling services, from custom HVAC system design and installation to comprehensive maintenance and repair. If you want to improve your indoor air quality, decrease your utility bills, and increase the level of comfort in your home, contact Duncklee Cooling & Heating for high-quality products and fast, reliable service. Since 1973, Duncklee Cooling & Heating has been known as the best HVAC contractor in Stonington. The company was founded by Lester H. Duncklee and is currently led by Jonathan Duncklee.