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    Average homeowner rating
  • Verified reviews icon621
    Verified boiler installation services reviews

Find Boiler installation pros in Niantic

Avatar for Cawiamca Heating, Cooling, and Electrical
Cawiamca Heating, Cooling, and Electrical
5.0(
93
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Niantic, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I was in the market for a ductless AC system for my house. With a project like this, it is wise to get multiple estimates and do your research. Cawiamca came right away to provide me with an estimate, came in at the best price, and could start the work the soonest. They installed three head units in the bedrooms and one in my living area. They left no mess in my home and placed drop cloths at the entrance. They went the extra mile to make sure I was happy with my AC system and stand behind their products and labor. I would highly recommend them."
Variable Refrigerant Flow Cold Weather Heat Pump in East Lyme
VRF Cold Weather Heat Pump in Groton
Additional Photos
Additional Photos
Response time8 hrs
46 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Gas Boiler or Radiator Heating System - Install

Serving Niantic, 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
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 Niantic, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Posted a job for a boiler replacement on homeadvisor on thursday and got a call in less than half an hour. Ron, one of the owners, said he could come take a look on saturday morning. I got a quote on monday. I decided to hire them on friday. Jeremy the boiler specialist and other co owner came by the the next day to take a few more pictures and check on a few other things. The boiler we decided on was a special order and took a few weeks to arrive. It came in on a monday and was installed by thursday. They started on thursday morning with a two man crew. Around lunch the Jeremy came by to see how things were going. Around 2pm an other two guys showed up to help. At about 3:30 the co owner and boiler specialist came by to oversee the final part of the install and operational testing. I was originally told it would be a two day install. They didn't just replace the boiler, they replaced the expansion tank, dual zone control box, etc. They worked until around 7pm to get it all done in one day. They bled all the radiators in the house and made sure they were heating properly. They took all the old parts with them and left no trash behind. Everybody from this company was extremely professional. They arrived within five minutes of the time they said they would be at my house. Nobody could beat the quote they gave me for the install. Any questions I had were responded to in 30 minutes or less. The install looks amazing so much shiny copper pipe. Cawiamca gave me a 3 year warranty where they will take care of all the labor and parts if anything goes wrong. This was by far the best experience I have ever had with a company coming to my house to do something.They performed consistently above my expectations. They will be the first people I call if I need any more work done on my heating system. I highly recommend Cawiamca."
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 Niantic, 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
2 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for The Guild
The Guild
5.0(
4
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Niantic, CT and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

The Guild is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we work smart, and it gets done right.

Response time1 day
Recommended by100%of homeowners
Avatar for Griswold Plumbing Services, LLC
Griswold Plumbing Services, LLC
4.6(
132
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Niantic, CT and surrounding areas

In business since 2009

Emergency services offered

Credit card accepted

"Tim came out when he said he would, was friendly and courteous.  He diagnosed our problem and proposed a solution.  He patiently answered all our questions and installed the new equipment that very day. In a few short hours we had a functioning water system with much better water pressure than we ever had here before.  We knew the complete price ahead of time. I am extremely satisfied and very glad to have found a good, reliable, and trustworthy plumber who is local.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Recommended by93%of homeowners
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Install Boiler questions, answered by experts

The main difference between an outdoor wood furnace versus an outdoor wood boiler is what each appliance is heating. An outdoor wood furnace burns wood to create heat, which warms the air and moves it through the ducts in your home. An outdoor wood boiler uses the heat from burning wood to warm water, which goes through pipes to radiators in the home.

A furnace is a big unit where gas, heating oil, or electricity heats the air. The warmed air is then pushed back out through ducts and vents. 

A boiler uses electricity, heating oil, or gas to heat water that is pushed into the room through a radiator. This is one of the oldest and most effective ways to heat a house, but radiators can also be unsightly and leave hot and cold spots in the room.

Heat pumps use a refrigerant to move heat from outside into the house and return it to the room through ducts and vents.

Many utility companies and government programs offer rebates or incentives for the installation of high-efficiency propane boilers. These can offset upfront costs and improve your return on investment. Check with your local utility or installer for current offers. Incentives vary by state and provider, so exploring regional programs can help maximize your savings.

If you're often struggling with radiator issues like chilly spots, leaks, or annoying noises, those are common indications that your radiator may need to be replaced. Corrosion, uneven heating, and persistent hissing sounds are common issues as well. When repairs become a regular chore and your home’s energy bills start to rise, a new radiator will bring the comfort and savings you need.

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

The Niantic, CT homeowners’ guide to boiler installation services

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