Top-rated boiler installation pros.

Best boiler installation pros near Groton, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your boiler installation project in Groton, CT?

Select your specific project to find the pro for you.

TRUSTED BY GROTON, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon571
    Verified boiler installation services reviews

Verified Reviews for Boiler Installation pros in Groton, CT

*The Angi rating for Boiler Installation companies in Groton, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

*The HomeAdvisor rating for Boiler Installation companies in Groton, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

Last update on August 17, 2025

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

Avatar for Cawiamca Heating, Cooling, and Electrical
Cawiamca Heating, Cooling, and Electrical
5.0(
96
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Groton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Oil boiler and indirect water heater installed efficiently with attention to detail. Great customer service!"
Variable Refrigerant Flow Cold Weather Heat Pump in East Lyme
VRF Cold Weather Heat Pump in Groton
Additional Photos
Additional Photos
Response time8 hrs
28 neighbors recently requested a quote
Recommended by92%of homeowners
Request Quote
Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Gas Boiler or Radiator Heating System - Install

Serving Groton, 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
Request Quote
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 Groton, CT and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Ryan was professional, friendly and definitely know his stuff. I was impressed by the quality of the installation. I would, and will, recommend Irie Energy for anyone wishing HVAC services"
Mitsubishi
Mitsubishi
Mitsubishi
Mitsubishi
Mitsubishi

+14

Response time11 hrs
Recommended by89%of homeowners
Request Quote
Avatar for Parker Mechanical Heating and Cooling
Parker Mechanical Heating and Cooling
4.8(
17
)
Oil Boiler or Radiator Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - Install+3 more

Serving Groton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Excellent response time to no heat on an extremely cold day. Eventually replaced boiler & heating system; knowledge and craftsmanship best I've hired. Great value for the work and level of service provided. Highly recommend this company."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+30

Response time4 days
Response rate100%
14 neighbors recently requested a quote
Request Quote
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 Groton, 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
Request Quote
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 Groton, CT and surrounding areas

In business since 2009

Emergency services offered

Credit card accepted

"Never received quote for the service. They contacted me ask for a picture of the old boiler which I sent but never was contacted by them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Recommended by93%of homeowners
Request Quote
Showing 1-10 of 27
Install Boiler FAQs, answered by experts

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

Common problems include leaks, low pressure, and inefficient heating. Regular maintenance prevents many issues.

Yes. In many cases, switching from an old furnace to a high-efficiency boiler can help you save money over time. You can also save money by switching from an electric boiler to a gas boiler, which costs much less compared to the energy bills an electric boil can create. Boilers are often (but not always) more efficient than furnaces, too. Then there are discounts, rebates, and incentives that can help you save on the initial costs.

Yes, you can build a sunroom addition to your home despite living in a cold climate. Make sure to use high-quality insulation and windows and to supplement with sufficient heating from your HVAC system. The windows in the sunroom allow enough natural light into the room to help heat it most times without having to use the furnace. Even a small electric fireplace can heat the sunroom well enough.

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

The Groton, CT homeowners’ guide to boiler installation services

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

See all articles