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Best boiler installation pros near Old Lyme, CT

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    Average homeowner rating
  • Verified reviews icon463
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Old Lyme - Updated Nov 2026

Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Gas Boiler or Radiator Heating System - Install

Serving Old Lyme, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Williams & Associates replaced an ancient, very large old boiler in my very large house. Bruce calculated the necessary size and found a suitable boiler. He and his crew thoroughly cleared the radiators and lines before removing the old boiler and installing the new one. They checked all the radiators and added new valves as needed during a lengthy checkout. It took several days to do all the work. Throughout, Bruce explained what they were doing and why as well as recommending changes/additions to the original proposal. They were even cheerful about removing the original "Mary Jane" from the basement. I would definitely recommend them to anyone using steam heat. Great job!"
Large Mechanical Room
Response time1 day
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Cawiamca, LLC
Cawiamca, LLC
5.0(
43
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Old Lyme, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"E-mailed for a quote inquiry for boiler install. Received a call and a visit same day. Ron fit us in for a combi boiler install within a week as we lost hot water. Roy and Austin were true professionals. Very knowledgeable, thorough and neat. A solid company that genuinely cares for its customers. Ron and crew... thank you for everything. You're all top notch guys. We're looking forward to our new mini split ."
Steam Boiler
New Boiler Install
New Home Saybrook
Custom built in in progress
Addition in progress

+2

Response time4 hrs
Recommended by100%of homeowners
Avatar for Irie Energy Heating & Cooling
Irie Energy Heating & Cooling
4.9(
19
)
Gas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For Business

Serving Old Lyme, CT and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Ryan installed a new boiler and indirect hot water tank in my house. The quality of workmanship is excellent. He was prompt and professional at every stage of the project. He explained how the system would work and makes great recommendations that will save you time and money. He answers all questions honestly and thoroughly and will make sure you are comfortable with everything he does. Don't think twice about hiring him - he will be in very high demand as he continues to make a name for himself."
Mitsubishi
Mitsubishi
Mitsubishi
Mitsubishi
Mitsubishi

+14

Response time11 hrs
Recommended by89%of homeowners
Bill Aitken Heating, LLC
4.8(
47
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For Business

Serving Old Lyme, CT and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"Bill was easy to work with. He showed up when he said he would, was friendly, he did a great job and was reasonably priced. What more could anyone ask for?"
7 neighbors recently requested a quote
Recommended by87%of homeowners
Showing 1-10 of 28
Install Boiler FAQs, answered by experts

Oil boilers provide reliable heating, efficiency, and long-term cost savings compared to electric options.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

Deciding whether or not to replace radiators with a different heating system depends on your personal preferences. Radiators can take longer to heat up than a central heating system, and they take up floor space. However, they can be very efficient at heating, and they keep rooms at a more comfortable humidity level in the winter than forced-air systems.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

Safety concerns with propane boilers include proper venting to prevent carbon monoxide buildup, secure gas line connections, and regular inspection of safety controls. Professional boiler installation and annual maintenance are essential to minimize risks. Having a carbon monoxide detector installed in your home is essential for early detection of any leaks or ventilation issues.

The Old Lyme, CT homeowners’ guide to boiler installation services

From average costs to expert advice, get all the answers you need to get your job done.