Top-rated boiler installation pros.

Best boiler installation pros near Harwinton, CT

Enter your zip and get matched with up to 5 pros

TRUSTED BY HARWINTON, CT HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon418
    Verified boiler installation services reviews

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

Avatar for H L Bowman
H L Bowman
4.6(
429
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Harwinton, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"The thermocouple on my gas-fired boiler needed to be replaced, and the pilot needed to be cleaned. The tech was helpful and forthcoming with information. Took about an hour, as my boiler does not have easy access. Would hire again!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

485 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Advanced Mechanical Services LLC
Advanced Mechanical Services LLC
4.8(
19
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Harwinton, CT and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Outstanding service. I called because my boiler was leaking and the after hours technician responded within 30 minutes of our call. Our coil plate and gasket were rotted and bolts had snapped and we decided that we would replace the boiler because ours was 16 years old. We spoke with the owner and sales manager the following morning and were told that they would be happy to replace the boiler if that is what we wanted to do but they felt our boiler could be repaired at a fraction of the cost and no where near the end of it's usable life. So we decided to go for the repair and they were right, it worked like a charm! So instead of a $9,000 boiler and indirect replacement, we spent $472 and my boiler was up and running the next day. We have used Advanced Mechanical Services for our conversion from oil to natural gas and for our air conditioning installation. They have always been very professional, courteous, prompt and their pricing has always been competitive. I would highly recommend them."
Response time11 hrs
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Precise HVAC Home Services
Precise HVAC Home Services
4.9(
38
)
Oil Boiler or Radiator Heating System - Install

Serving Harwinton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Precise HVAC was wonderful. I actually was going to get more quotes but after working with their salesperson I decided to not even bother. They answered all my questions and made suggestions for things I didn't know about. I'm not even sure I care if I got a better quote or not. With Precise I know that they cross the t's and dotted the eyes and I don't have to worry about missing something."
Water Heater
Water Heater
Furnace
Furnace
American Standard Furnace

+22

Response time5 hrs
Response rate97%
301 neighbors recently requested a quote
Avatar for Perfect Timing Heating & Cooling
Perfect Timing Heating & Cooling
5.0(
15
)
Oil Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Harwinton, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I needed quick service on a 45 year old hot water boiler in a 1938 house I recently purchased.  While I could get the pilot light lit, nothing I did could get the boiler to fire (water was circulating).
On Wednesday I contacted Pelletier Mechanical as Gary (the owner) had been out giving me estimates on the various repairs and modifications I wanted to make.  While Gary was out of the office training (again), Laura his admin arranged for Bill to come out on Friday.  She provided an estimated cost (right on) and a 2 hour window.
Bill showed up on time and after a brief discussion get right to work.  Bill spent about 15 mins. systematically determining why the flame would not light.  He discovered that there the gas was not making it to the main control valve.  He reset the safety shut off valve and the problem was solved.  He then checked all the radiators to make sure that hot water was making it through out the house.  After we determined that the upstairs radiators were not getting hot, Bill checked the water pressure and determined that the pressure was insufficient to fill the upstairs radiators in "real  time".  He suggested that the culprit was the 45 year old water valve and pressure release valve which being cast iron tend to corrode and clog in time.  He proposed a replacement solution and priced it out, and offered to pick up the parts and replace the valves that afternoon.  I decided to wait a few weeks so I could consider replacing the entire boiler.
While we were waiting on the boiler to come up to heat, Bill and I walked through the basement looking at the existing plumbing, tracing the water flow path and discussing the possibility of replacing the hot water tank with a tankless unit. (The hot water run is about 60-65 feet from HW tank to kitchen, bathrooms, etc.)  Bill, like Gary, is knowledgeable and informative.
I will have Pelletier Mechanical  back to do more work on the house."
Gary with his fleet
Mike and his Truck
All Hands On Deck!
The Fleet
The Fleet

+1

Response time7 hrs
Response rate100%
37 neighbors recently requested a quote
Avatar for Chernin HVAC & Refrigeration L.L.C.
Chernin HVAC & Refrigeration L.L.C.
5.0(
12
)
Gas Boiler or Radiator Heating System - Install - For Business

Serving Harwinton, CT and surrounding areas

Approved

In business since 2022

Credit card accepted

Offers commercial services

"I recently had a great experience with Chernin HVAC. They were professional and thorough in maintaining our old AC system. The technician provided valuable recommendations for a future upgrade, highlighting how it would save on energy costs and improve cooling efficiency. I highly recommend Chernin for its expertise and outstanding customer service."
Response time10 hrs
Recommended by90%of homeowners
Avatar for All-Weather Mechanical
All-Weather Mechanical
4.2(
35
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Harwinton, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I worked with several contractors to identify the best solution and price for my new boiler/tankless water heater. Chad was patient and thorough in his explanation of my options and costs. He installed a high efficiency system in 2015 that has worked flawlessly. We NEVER run out of hot water. The space in the basement has been cleared with the elimination of the old boiler and stand alone hot water heater and best of all.... my propane gas usage is 1/3 the amount it has been in previous years. Chad did a beautiful job on the installation. His work is meticulous and I've often told my friends/neighbors it is a work of art. He also helped me with the rebates and finance options available. I could not have asked for a better contractor. Chad was responsive, on time and left my house better than he found it. He removed the old equipment and even helped me by installing a new double filtration system for my well which he configured much better than the previous single filter. Based on this install and level of service, I would give Chad the highest possible recommendation."
LG Art Cool Premier Wall Unit
LG Art Cool Premier Wall Unit
LG Outdoor Single Zone Unit
LG Art Cool Mirror
LG Art Cool Gallery

+32

Response time1 day
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for J Thurston Fuel
J Thurston Fuel
5.0(
4
)
Boiler or Radiator Heating System - Install or ReplaceGas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Harwinton, CT and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"Very positive experience. They responded immediately when I sent the request. The gentleman who called asked me questions about my current setup and had a technician out promptly. The quote was reasonable and the job was completed in one day. Staff were friendly. Happy customer!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

9 neighbors recently requested a quote
Recommended by75%of homeowners
...
Showing 1-10 of 55
Install Boiler FAQs, answered by experts

Most propane boilers last 15 to 20 years with regular maintenance and proper care. The lifespan depends on the quality of the unit, proper installation, and the level of maintenance. Investing in annual service can maximize longevity and efficiency. Routine inspections and timely repairs prevent early breakdown, ensuring your boiler heats your home for years to come.

If you want to have hot water in your home and part of your plumbing system, you'll need a hot water heater. An alternative may be to heat water as you use it, such as by boiling what you need on the stove. But that's much less efficient and takes considerably longer than hooking up a water heater. Another option is to rely on appliances, such as a dishwasher or washing machine, that heat the water themselves.

The average cost to replace or install a new HVAC system is around $7,500. However, the price can range from $5,000 to $12,500, depending on factors like the size of your home, the type and brand of the unit, and your specific heating and cooling needs. If you only need to replace certain components, the cost will be lower; for example, a new AC unit can cost between $2,200 and $5,500, while a new furnace costs $3,200 to $6,000. If additional work like new ductwork is required, the total cost could be as high as $22,000. It's best to contact a local HVAC company for an accurate quote.

The primary differences between a heat pump and a boiler are their function and how they produce heat. A heat pump is a versatile system that provides both heating and cooling by moving ambient air and altering its temperature. In contrast, a boiler is solely a heating system, often working with a furnace or AC unit as part of a larger HVAC system. In terms of heat production, a heat pump generates heat more slowly and at a lower temperature, requiring a large convector for distribution. A boiler, however, produces a large amount of high-temperature heat that it emits through smaller radiators.

Radiators are a popular home heating choice in older homes, but they are becoming less common in new-construction homes. According to a 2022 report by Elements Visual Capitalist, only around 1.3% of new single-family homes have radiators and similar heating systems, such as baseboard heating.

While they may not be as popular as they once were, radiators today come with more energy-efficient features that can make them practical for modern homeowners.

The Harwinton, CT homeowners’ guide to boiler installation services

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