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Best boiler installation pros near Willimantic, CT

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TRUSTED BY WILLIMANTIC, CT HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon234
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Willimantic - Updated Nov 2026

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

Serving Willimantic, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Williams & Associates installed a Buderus oil-fired boiler and stainless-steel chimney liner. Bruce's design was a significant upgrade over my 35-year-old boiler system. He clearly explained the process and installation, and he was receptive to my questions. Bruce is knowledgeable, straightforward, and responsive. The price was very fair, considering the quality of the work and other estimates I had gotten. I would not hesitate to recommend Williams & Associates."
Large Mechanical Room
Response time1 day
Recommended by92%of homeowners
Avatar for SuperiorAir Duct Cleaning
SuperiorAir Duct Cleaning
4.5(
573
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Willimantic, CT and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Very well. I had an appointment for approximately 8 AM. They were a bit late, but had called to let me know, and it wasn't a problem for me. They spent well over an hour on the job. They took a ton of lint out of the vent pipes and the dryer itself. I'm pretty sure that whoever it was I had in last time did not open up the dryer to clean it. They also installed a "bird cage" around the vent opening on the side of the house to prevent critters from getting in. (I don't think I have had problems with birds getting in, but why take the chance?) They were very thorough. The job cost more than the initial estimate, but this was because my vent pipe was longer than I had realized. It was reasonable."
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+43

Recommended by87%of homeowners
Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.5(
85
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Willimantic, CT and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"I received a phone call almost immediately after requesting service for my boiler. I was scheduled for the very next day, and the work that was done was done quite well. Greg, the service tech who came out, explained to me what he was doing as he was cleaning my boiler. I highly recommend using this company!"
Home Show
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+22

Response time6 hrs
8 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Air Scrubbers Air Duct Cleaning LLC
Air Scrubbers Air Duct Cleaning LLC
3.9(
332
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Willimantic, CT and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"Rd.I had to pay an extra $15.00 because I had an extra air duct or intake vent. He discussed how often the ducts should be cleaned and offered another service that would help disinfect and keep dust mights down. The extra service also extended the length of time before I would need to have the vents cleaned again. I chose the extra service and will not have to have it done again until 8-10 years from now. My nephew who is 45 was not happy I was having the ducts cleaned but he was pleased with their work in the end. I had this done in my last house twice so I am not new to this. I was pleased with their work. They started immediately and finished about an hour and fifteen minutes later. I have house that is almost 2,000 sq. feet. The $230.00 includes the $89.00 I paid when I ordered it through Angie's List.

"
Recommended by77%of homeowners
Avatar for Vista Home Improvement
Vista Home Improvement
4.3(
419
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Willimantic, CT and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"They did an excellent assessment, were good listeners for our goals, gave us updates as to when the custom windows would arrive, installed promptly and expertly respecting our time limits due to our children's nap schedule, cleaned up, communicated with us through the installation, and we have had reductions in our energy bill since the installation.
"
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+41

Recommended by87%of homeowners
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Install Boiler FAQs, answered by experts

In most cases, repairing a radiator is more affordable than replacing it. A typical repair may cost between $100 and $200, while a replacement can average $1,500, with a range of $250 to $2,500 depending on the unit type. Radiator issues are often simple fixes for a professional, such as a blown fuse, malfunctioning thermostat, or a loose valve, and can take less than an hour. However, if the long-term costs of fixing the radiator are higher than replacement, it's better to get a new model. It is recommended to consult a heating expert to diagnose the problem and determine the best solution for your situation.

Costs depend on system size, efficiency rating, and additional features like zoning or smart controls.

DIY is not recommended due to safety risks and technical expertise required. Hire licensed professionals.

Coolant and antifreeze are technically not the same thing. The difference between the two is the ratio of water to other chemicals. True antifreeze is mainly made up of either ethylene glycol or propylene glycol, while coolant comprises one part antifreeze and one part water. However, the terms coolant and antifreeze are often used interchangeably, even by pros.

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

The Willimantic, CT homeowners’ guide to boiler installation services

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