Heating Services

From hot water heaters and oil tanks, to boilers, burners and furnaces, we offer a wide selection of heating systems that will help keep your house warm all winter long.

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Complete Heating Services in Middletown, Cromwell & Surrounding Middlesex & Hartford Counties

Heating Repair Services & Installations

At Cromwell Energy, we install and service many of the highest rated brands of heating equipment, including: American Standard, Biasi, IBC, and Navien. From water heaters and oil tanks, to boilers, burners and oil and gas furnaces, we offer a wide selection of heating systems that will help keep your house warm all winter long.

Our qualified HVAC experts can recommend the best heating system and total home solutions to meet all of your heating needs. Whether you heat your home with oil, natural gas or propane, Cromwell Energy’s licensed technicians have the expertise to optimize your home heating system. We offer expert oil furnace repair and gas furnace repair as well, and will maintain your current system and keep it running efficiently.

 

New Heating System Installations

Cromwell Energy’s “sales” people are all HVAC technicians. They are not working on a commission basis and are dedicated to finding the optimal solution for your home.  We listen to our customers and ensure that what we recommend matches those requirements. We will take the time to explain why the system we are recommending is best for your home and are focused on working within your budget. There is a reason why so many homeowners have trusted Cromwell Energy to install their heating equipment: we offer excellent products, and excellent service, at a fair price.

Need financing for your new system? Cromwell Energy has a number of financing options to meet your budget.  Many high efficiency systems also qualify for Federal or State rebates, and manufacturers add in additional incentives on select systems. Today’s modern heating systems are light-years ahead of old technology when it comes to high efficiency, and that efficiency translates into using less energy, long-term savings, and more dependable comfort for your family.

 

Is It Time to Replace Your Furnace of Boiler?

Looking for furnace replacement or heating repair in Cromwell, Middletown, Glastonbury, West Hartford or nearby CT? You can count on Cromwell Energy to provide the right heating system for your needs, and to optimize the efficiency of your existing system. If your boiler, burner or furnace is not performing as well as it should, you may be ready to have your heating system updated to a more efficient model. If you are in the process of building a new home, or remodeling an existing home, contact us for a free estimate.

We sell and install several brands and will be happy to visit with you at your home or our offices to discuss the options. Outlined below are some of the brands we recommend, and why we think they are a good value.

 

Common Home Heating System Problems & Solutions 

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Problem: Why is My Furnace or Boiler Not Running?

When boilers or furnaces are “not running”, it is often a simple or routine problem. One way to save money on a service call is simply to check for some of the basic issues that we encounter. Try checking these do-it-yourself solutions before calling for service:

Solutions:

  1. Check that safety switch is on (usually at the top of the basement stairs) and that the circuit breaker is not tripped.
  2. Check thermostat: In Heat position? Temperature turned up?
  3. Check oil tank gauge to ensure you have oil.
  4. Change the filter on your furnace.

If none of these solutions solves the problem, then call our service team to get back up and running!

Problem: Why is my Furnace or Boiler Producing a Smell and/or Soot?

Problems related to smells or other visible signs (soot or smoke) are more serious and generally require immediate attention by a trusted professional. This is particularly true if you have natural gas, as both the smell (carbon monoxide) and the combustible nature of gas, pose a threat.

With oil-fired systems, the solutions may be straightforward, such as a plugged furnace or smoke pipe. It is essential that you have your boiler cleaned yearly to prevent sooting and smells.

Solutions:

  1. Shut off safety switch if you use heating oil (usually at the top of the basement stairs) or call the gas company immediately if you smell gas.
  2. Have your furnace/boiler cleaned yearly.
  3. Only use heating oil that has been treated with a high-quality additive.
Problem: Why Does my Furnace or Boiler Run Continuously or Make and Excessive Noise?

Many homeowners become concerned when they notice their heating system won’t turn off or is making consistent and excessive noise. If your heating system seems to run continually, this is often a sign of furnace problems related to the motor, or may be due to a clogged filter or improper air flow.

Solutions:

The only real solution here is to call your local HVAC professional to accurately diagnose the noise and make the necessary repairs. It’s important for homeowners to ensure that the HVAC technicians are licensed and insured, and that the heating company has a solid reputation in the community.

For over 35 years, Cromwell Energy has been the top heating company serving Middletown, Glastonbury, West Hartford and nearby areas of CT. No matter what type of home heating problem you are experiencing, our knowledgeable technicians will take the time to walk you through why the heating issue is happening and the best possible solutions to make sure your heating system is performing efficiently all winter long.

Call Cromwell Energy today at (860) 635-1234 or contact us online here to schedule your free home heating estimate today!

American Standard Furnaces

American Standard Furnaces

American Standard furnaces are one of the top rated furnaces on the market. Their S-Series Condensing furnaces are very high-efficiency (96%-97%) and have state-of-the-art features such as: Durable hot surface igniter, Two-stage gas valve, Variable-speed ECM blower motor with Comfort-R, Stainless steel primary heat exchanger, Secondary heat exchanger. To see a full list of high-quality features, click on the attached product brochure!

BIASI Boilers

BIASI Boilers

The BIASI B10 Boiler System is a rugged, high performance oil/gas fired, cast iron boiler designed to deliver efficiencies as high as 87.3%; much higher than that of “single pass” domestic boilers. The BIASI B10 has a unique triple pass heat exchanger that extracts the maximum amount of heat from the combustion gases, resulting in very little wasted heat. The B10 is an affordable, versatile, long-lasting heating system.

IBC Combi-Boilers

IBC Combi-Boilers

The IBC DC Series boiler is the only fully condensing combi boiler on the market. With a 30 year proven track record, the DC series boiler will provide enough hot water for both your kitchen and bathroom, as well as enough heat to make your home cozy and snug! IBC’s unique 2 in 1 heat exchanger also eliminates the need for a diverter valve and plate type heat exchanger. The DC Series features up to 3.2 gallons-per-minute continuously at 70° rise.

Navien Combi-Boilers

Navien Combi-Boilers

The NAVIEN NCB-E combi-boiler is one of the top-rated combi-boilers on the market. With an Energy Star “Most Efficient” rating for 2018, and an AFUE (efficiency) of 95.0%, the NCB-E provides state-of-the-art performance and a sleek, compact design. The NCB-E is the first high-efficiency condensing combi-boiler with the capacity to supply both heat and hot water for larger homes. The attached product brochure provides detailed features/specs.

Customer Testimonials

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

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DR.DeirdreMiller miller
February 13, 2026

Lou the owner and all of the staff are so sweet and thoughtful. I wouldn’t go anywhere else. Thank you 🫶🏻

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Gregor Geurkov
February 3, 2026

Absolutely excellent company! My 25 old furnace failed just as cold weather rolled in Dec 2025 a week before holidays. Within a day Cromwell energy came in and gave an estimate. Out of 5 vendors who provided quotes Cromwell Energy was very competitive on price. Even though they were booked I pleaded to help expedite installation and to my amazement the following day Jeff managed to rearrange crew's schedule and 2 guys came in the afternoon and worked late until installation was completed. 2 guys were working non-stop that day. Superb work ethics and job was done very professionally. Later on home inspector came in and praised work that was done. For any heating/cooling future problems Energy Solutions would be contacted first.

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Matt D
January 12, 2026

110% satisfaction guaranteed. I’ve been a customer for a long time and have had nothing but easy and pleasant transactions In addition to the great prices for products or services. I buy home heating oil from them, have repairs and service done, they even assisted me with a new oil tank and radiant heating for a new construction project. A+++ All the time. And they’re always there to help 24/7. Thank you, Cromwell Energy! -Matt Dunn

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Sebby M.
December 24, 2025

I recently had a new furnace installed by Cromwell Energy after a friend’s recommendation, and the entire experience was flawless. Every team member—from administration and sales to the installation crew—was professional, punctual, and polite. I was especially impressed by the neatness of the installation. The technicians addressed all my questions immediately and with courtesy. I highly recommend Cromwell Energy for their top-notch service.

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Marvin Rogers
December 9, 2025

Highly recommend Cromwell Energy. Very responsive and professional. Every tech has been a pleasure to deal with and very knowledgeable and courteous. They have previously installed and/or repaired my entire HVAC system with exceptional results. Eric came today and repaired a minor leak and the issue was explained and resolved immediately. Thank you all!

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Lauren Greco
December 7, 2025

After days away I came home to find my house at 44 degrees on a Saturday afternoon.Brian came out first thing Sunday morning to fix my hot water heater. He was punctual, professional, and clearly explained what he was doing and why. When he was done everything worked perfectly. 10/10 would recommend Brian and Cromwell Energy.

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Lucille Augeri
October 10, 2025

I called this morning 10-10-25 because I had no heat. The girl that took my call could not give a time but said it would be today. The service man arrived at 11:00 and by 12:30 I had heat. The young man who came was a gentleman, he quoted me a price and I agreed. This is the first time I called for service from Cromwell Energy and it was a pleasure to have them. If anyone out there needs service this is definitely the Company to call.

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John Ruffino
September 5, 2025

SHORT REVIEW: Honest, polite, punctual, reliable, and educated me on all steps for a MAJOR overhaul with a complex steam boiler replacement in an old home in Middletown, CT. They completed the job flawlessly. If they are skilled enough to do what they did at my house - they can definitely get you hooked up right. FULL STORY REVIEW (AND RATIONALE FOR WHY THEY ARE GREAT): In June 2024, My wife and I purchased my grandparent's former farmhouse in Middletown (it had not been occupied since 2008). The steam boiler was from ~2006 (but looked like it was taken off the titanic and installed on bricks in the cellar). After doing some amateur youtube research on steam boilers, I ran a couple of test runs and determined it was super sketchy/didn't seem safe running (the autofill was not working, so you had to fill it manually - it was also actively dripping water once full). In short, it was bad. I interviewed several local companies - one that starts with C and ends in LARK'S, one that starts with A and ends with IELLO, and lastly CROMWELL ENERGY. The first guy came and looked at it/said he could do it (and never responded to any of my followup calls). Next guy came and didnt even look at the boiler but quoted me at 38K. Finally, Cromwell Energy had their at-bat and they knocked it out of the park. When Jeff from Cromwell Energy came over, he was on time and proceeded to look at the boiler and all of the return pipe/pipework infrastructure. He also looked at and counted each fin on the radiators that were piped in (NO ONE ELSE DID THIS PRIOR TO QUOTING THE JOB!!). He listened to the background that I provided on the system and was "real" with me on what needed to be done. Clearly, my situation was not a simple plug-and-play which is essentially how the other companies seemed to view it. Cromwell Energy won the job because I could sense they knew what they were talking about and wouldnt leave me stranded. Prior to my install in 9/2025, Jeff and some of the crew came out to review the pipework and entry points - essentially to ensure that they weren't missing any materials or fittings / establish a plan-of-attack. The job was completed in 2 days and the radiators have radiated heat for the first time since 2008ish. True miracle workers and they made sure everything worked - they even put new vents on each radiator (the old ones were probably from the 50s). Install team were friendly and schooled me on the intricacies of the system. Highly recommend!

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Kenshin
July 29, 2025

Just had a new combi system installed by Tom and his team. They were very professional and even clean up the basement for me. I got nothing but best praises on their job well done!

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Scott Baecker
July 1, 2025

We had Cromwell Energy install a central air system in our house. The install team was great---nice guys and obviously highly skilled. We couldn’t be happier. Highly recommend Cromwell Energy

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PETER HARRINGTON
June 16, 2025

I couldn't be more pleased with Cromwell Energy. Having your AC go down during warm weather is less than ideal, however getting Cromwell Energy on the problem was by far the best choice I made. They were able to come out same day, diagnose the issue, and order the required parts. When the parts came in, they came right out to fix the problem, and the house is now cool. I trust and will now rely on Cromwell Energy for my heating and cooling needs.

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DeeDee Fox
June 16, 2025

Great service! New to the area and Eric explained the AC and heating system and took the time to answer my questions. Called to schedule my Fall appointment and very friendly office staff.

Need Delivery or Service?

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