Durham, CT

Since 1984, Cromwell Energy, Inc. has been delivering quality HVAC installation, heating, and air conditioning repair services to the residents of Durham, Connecticut.

HVAC Services in Durham, CT

Since 1984 Cromwell Energy has been proudly providing residential heating and cooling services in Durham, Connecticut and the surrounding areas. Our licensed and insured technicians are experts in a wide variety of HVAC services. From air conditioning repair and installation, to furnace maintenance, repair and installation, Cromwell Energy is your local, go-to HVAC company. We also offer fast and affordable home heating oil delivery in Durham, CT, so you will never be left out in the cold.

No matter what type of HVAC service in CT you need, Cromwell Energy is here to help!

Heating System Installation, Maintenance & Repair

Proper maintenance is crucial for keeping your home boiler or furnace working efficiently. If you think your furnace is in need of maintenance, call the CT home heating experts at Cromwell Energy to professionally inspect and tune-up your system. If your furnace suddenly stops working, no need to worry! We offer 24/7 heating system repair CT so you can quickly enjoy the comforts of a heated home.

Thinking you need a new boiler or furnace installation in CT? We offer free estimates on all our installations, and financing options are available!

Air Conditioning Installation & Repair Services

Our HVAC repair technicians in Durham CT are experts in all type of AC systems, including central air conditioning systems and ductless mini-split units. No matter what type of HVAC service and repair you may need, we have the expertise to provide fast and cost-effective service. Cromwell Energy uses the top-rated brands on the market, including American Standard, Mitsubishi and LG.

From new air conditioning installation, to complete AC system repair, we take the time to properly diagnose the problem and outline your repair options. Don’t hesitate to give us a call 24/7 if you have an AC repair emergency as well. We are available day and night to make sure your HVAC system is running effectively, especially during those hot summer months.

Natural Gas Conversions

Cromwell Energy is one of Durham CT’s top choices for natural gas conversion. We will come out to your home and give you a thorough, free consultation for converting your home’s existing oil-burning system into a modern gas-burning configuration. There are many rebates and financing options currently offered in Connecticut to enhance the conversion from oil to natural gas. As a member of the CNG/SNG (UI) and Eversource contractor networks, Cromwell Energy has the experience and knowledge to convert your home to natural gas safely and affordably.

Home Heating Oil Delivery in Durham, CT

Cromwell Energy is one of the top companies offering heating oil delivery Durham CT. Our heating oil is treated with the HEATDOC additive to maximize efficiency, reduce sludge and inhibit corrosion. We have flexible delivery schedules, and provide many heating oil delivery options to suit your specific budget and needs.

From heating system installation, to oil delivery, to emergency HVAC repairs, our Durham, CT team is available to provide you with skilled, professional, and efficient service at an affordable price. Contact us today to learn more!

Oil Delivery & HVAC Services

In addition to our heating oil delivery, Cromwell Energy offers HVAC services throughout Middlesex and Hartford County, CT. We offer installation and maintenance services for most major brands of heating equipment (boilers, burners and furnaces) as well as commercial & residential central air conditioning (AC) systems. We also install the highly rated Mitsubishi ductless mini-splits and heat pump systems - which have become a go-to option for many Connecticut homeowners.

HEATING OIL DELIVERY IN CROMWELL, MIDDLETOWN AND NEARBY, CT

Heating Oil Delivery

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

Complete Heating Services in Middletown, Cromwell and Nearby CT

Heating Services

We sell, install and maintain most major brands of heating equipment, (boilers, burners and furnaces) including Burnham, Buderus, Viessmann and American Standard.

Air Conditioning Services in Cromwell, CT

Air Conditioning Services

Cromwell Energy has the experience and expertise to professionally install and maintain your commercial or residential central air conditioning (AC) system.

Customer Testimonials

At Cromwell Energy, customer satisfaction is always our highest priority. Read some of our many 5 star reviews!

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Kelly Derosier
December 17, 2024

First time dealing with them. Annual service on a Navien Combi unit installed 2 years ago, they were great would highly recommend!

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Joyce Walter
August 6, 2024

Cromwell Electric was wonderful to work with. Jeff gave a clear explanation of estimate for mini split a/c and installation happened within a few weeks (earlier than expected)! Tom, Jason and Ken were extremely professional and friendly. Got work done in a day without interrupting us in the home. Everything was cleaned up and took time showing us how to work the units and care for them. We will continue to use this company for multiple services when needed. A+++.

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Lisa Raczka
August 2, 2024

Eric Mori came to do my annual service and he was exceptional! He took the time to answer all my questions, thorough and polite ! I was so pleased and he was neat and timely! He did both my AC and heating!

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G - Pops
July 22, 2024

In the middle of a heat wave, our AC quit. Having used Cromwell Energy for furnace maintenance previously, I recalled the excellent service they provided. They did not disappoint again. Even though they were scheduling a week out, a technician became available the next day. Eric was professional, courteous, answered all my questions (and then some), and clearly was an expert in his field. Thanks to Eric and the excellent office staff, our AC stands ready for the next heat wave! Highly recommend Cromwell Energy!!

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Nancy Joy
July 18, 2024

Cromwell Energy has always given us excellent service and we highly recommend them!

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Barbara Hughes
July 15, 2024

I have used Cromwell Energy for more than 15 years. Eric performed the annual tune-up of my furnace and central A/C. He does a great job of explaining what is being done, was prompt, professional, and experienced. Highly recommend!

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Claudia P. Tata
July 10, 2024

Great service today on my air conditioner from Eric! He knows his stuff 🙂

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Donna Panasewich
June 27, 2024

We called Cromwell Energy for a recent AC issue because they promptly fixed an issue we had a cpl years ago. Rep Eric came to our home, quickly identified the issue and had the AC running in no time. He was obviously very knowledgeable as well as courteous and thorough! Once the AC was on he verified the issue was resolved completely before leaving. Cromwell Energy was reasonably priced, will definitely call them again!

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Jim Meyer
June 26, 2024

Central A/C wasn't working when I needed it. Cromwell Energy sent Eric over the same day. They called before he came and he came when he was supposed to. He was very professional and methodic in tracking down and resolving the issue. I have been a custom for years and the service is always excellent.

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Nancy Sheehan
June 22, 2024

Great service, extremely professional, very responsive to heating and cooling needs! My review is based on many years relying on Cromwell Emergy’s services.

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Ellen Frederick
June 20, 2024

Have used Cromwell Energy for several years and always happy with their work. Eric performed the annual service on my HVAC today, very pleasant and knowledgeable technician.

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Lucy D
June 17, 2024

We have been a customer for many years and are always extremely satisfied with the service. Eric was out today to check our air conditioner unit. He was very knowledgeable, courteous and professional. We would recommend Cromwell Energy and we are grateful for the great service with Eric!

Need Delivery or Service?

Need home heating oil delivery or HVAC services? Give us a call or send us an email today to get started!