Top-rated boiler installation pros.

Best boiler installation pros near Exeter, NH

Enter your zip and get matched with up to 5 pros

TRUSTED BY EXETER, NH HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon681
    Verified boiler installation services reviews

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

Avatar for Clear All Cooling and Heating, LLC
Clear All Cooling and Heating, LLC
5.0(
93
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Exeter, NH and surrounding areas

Approved

In business since 2016

Credit card accepted

Customers say: Quick response

"Brian at Clear All was recommended by a friend and they lived up to the recommendation and beyond. Helped trouble shoot a broken boiler for my in-laws and once he saw it he highly recommended replacing the boiler. I knew this was not an up-sell as the boiler was in very rough shape. While the new boiler was obviously more expensive then the repair, the price quoted for the boiler, burner, install, and removal of the old system was very fair - too good to pass up and risk throwing good money at bad with a repair on a 20+ year old boiler. Contacted them on a Monday, Brian showed up on that Wednesday to assess the situation and the new boiler was installed and running by 5 pm Thursday. He kept me in the loop through the whole process even though it was my in-laws boiler install. He also took the time to evaluate the size of the house and recommended a much smaller boiler - the existing one was way oversized and therefore over-using heating oil."
Response time1 day
Recommended by100%of homeowners
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
89
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Exeter, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"The service technician Victor arrived on time and politely introduced himself. Prior to commencing work he inspected the work area (installation and clearances etc). He explained the house heating would be off as he cleaned filters etc. After cleaning/adjustment/testing was conducted, he went over the test results printout with me. All good and nothing required further work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Exeter, NH and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Joe, the AirCo sales representative, was very professional. He actually asked for my feedback on priorities for a new boiler. This was important to me because the boiler sits below our family room, and the noise level of the boiler was as issue. His proposals listed several boiler options, based on heating efficiency, which were competitively priced. The installation was run by Steve, who was able to fit in the installation the next week. Steve, and his crews, were punctual and courteous, and the installation went smoothly. It's only been a week, but I am very pleased with my Bosch boiler, the quality of the work, the price paid, and the timeliness of the installation."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Exeter, NH and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Repairs were excellent and thorough "even well documented". The tech found units low on coolant. He identified and repaired multiple refrigerant leak points. I have dealt with many HVAC contractors over the years and Freedom Air Mechanical is one of the best. I highly recommend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+36

Response time1 day
Recommended by92%of homeowners
Sunrise Heating and Cooling
5.0(
5
)
Electric Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Exeter, NH and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Sunrise Heating and Cooling did an excellent job installing my new Rinnai tankless water heater/boiler. From start to finish, the experience was smooth and professional. The crew was knowledgeable, punctual, and took the time to explain the system and answer all of my questions. The installation was clean, efficient, and clearly done with attention to detail. Everything works perfectly, and I couldn?t be happier with the upgrade. It?s clear they take pride in their work. If you?re looking for reliable, honest, and high-quality service, I highly recommend Sunrise Heating and Cooling."
14 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for NextGen Aire
NextGen Aire
4.8(
10
)
Oil Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For Business

Serving Exeter, NH and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Matthew responded very quickly to my call and showed up promptly thereafter. He was very professional and worked diligently to get my boiler working again and the heat restored to my home. He was able to diagnose the problem rather quickly and fixed the issue, even going so far as to explain many of the parts he had to replace and made me feel very comfortable that my unit was running efficiently when it was all done. I would highly recommend NexGen Aire and plan to call Matthew again for future issues. Fast, efficient, and affordable."
Furnace Replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time3 hrs
34 neighbors recently requested a quote
Recommended by88%of homeowners
...
Showing 1-10 of 70
Install Boiler FAQs, answered by experts

No, there isn’t always water in radiators. In a one-pipe system, water is constantly circulating from the boiler to the radiators and back. In a two-pipe system, water travels through two separate channels: one that goes to your radiators and one that returns back to the boiler so it can heat up again.

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.

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

You can replace baseboard heaters with many other types of HVAC systems, including forced-air furnaces, hydronic heating, and heat pumps. Each one has its advantages and disadvantages, so the best choice for you will depend on your budget, preferences, and the design of your house. If you aren’t sure which option is right for you, ask an HVAC pro for guidance.

The best time of year to purchase or replace an HVAC system, including components like an air conditioner or furnace, is during the off-season—spring and fall. During these periods, HVAC professionals are less busy than in summer and winter, when extreme temperatures create urgent demand. Shopping during the off-season can lead to savings of 10% to 15% on an AC unit and allows you more time to find the best deal and other cost-saving incentives. Typically, air conditioning units go on sale in the fall after demand drops, while furnace prices tend to decrease in the spring.

The Exeter, NH homeowners’ guide to boiler installation services

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