Fuel Oil Delivery

Oil Delivery Cromwell CTTo ensure that your home receives high quality fuel, Cromwell Energy delivers premium heating oil that contains the state-of-the-art Avalux additive package.

read more >

Heating Systems

Home Heating Systems Rocky Hill CTWe sell, install and maintain most major brands of heating equipment, (boilers, burners and furnaces) including Burnham, Buderus, Viessmann and American Standard.

read more >

Air Conditioning

Air Conditioning Repair Portland CTCromwell Energy has the experience and expertise to professionally install and maintain your central air conditioning (AC) system.

read more >

Natural Gas Systems

Natural Gas Systems Rocky Hill CTConverting to natural gas has become a viable alternative for many homes in Connecticut, and Cromwell Energy has extensive expertise in the installation and repair of natural gas systems.

read more >

 


 

Our Offerings

Lock-in Fuel Plans

Oil Tanks

Oil Tank Removal and Protection New Oil Tank Sales & Installation
Learn More

Generators

Trusted Brands
Regular Service
Safety Inspections
Learn More

Maintenance Contracts

Financing/Incentives/Rebates

Cromwell Energy works with manufacturers, utility companies, and the federal government to offer rebates and tax incentives for installing high efficiency heating and cooling equipment.

Learn More

Our Blog

  • Converting to Natural Gas: Is It Right for You? - Converting to natural gas has become a viable alternative for many residents in Connecticut. The availability of natural gas is increasing, and gas-line expansion was the cornerstone of the 2014 State of Connecticut energy policy. Does converting to natural gas make sense for you? The question is: Does converting your home to natural gas make sense for

Testimonials

  • Thank You! I just want to thank you for such great customer service. Technicians came out within an hour from my call and found the issue. They also imparted knowledge so that I will know the first steps to take in the future. I am very happy with the service received from Cromwell Energy.   -Chris E. Rocky Hill, CT
    Chris E.
  • We want to extend a big warm THANK YOU for all of your exceptional service. We know the job turned out to be trickier than most, and we really appreciate your professionalism and desire to make our system work smoothly. It was clear you all understood the finer points of working with the single-pipe steam monster – your experience was really appreciated! We’d happily serve as references for any future clients who want to know what it is like to work with Cromwell Energy – a super company and crew! Thanks again.   -Joe B. & Clare R. West Hartford, CT
  • My husband and I want to thank you for the amazing job you did replacing our furnace. The entire Cromwell Energy staff is always polite, professional, and highly skilled at what they do. What a pleasure it is to see a company so dedicated to its customers. We will continue to recommend Cromwell Energy to family and friends.   -Lucy H. Rocky Hill, CT
  • Your courtesy, promptness, trustworthiness, and excellence are a great comfort to me. I am very grateful.   -Richard D. Cromwell, CT
  • As you are aware the installation project has been completed at our home. Your staff spent eight days at our house and certainly worked very diligently and with outstanding work ethic. We are sure you are aware of the kind of work accomplished by these fine workers. Aside of their ability they are polite, helpful and cleaned up at the end of each day. Hats off to a good experience by Cromwell Energy for us.   -Bill & Valerie E. Cromwell, CT