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    Average homeowner rating
  • Verified reviews icon582
    Verified boiler installation services reviews

Find Boiler installation pros in Dover

Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Dover, 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
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Additional Photos
Additional Photos

+11

3 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Walshco LLC
Walshco LLC
5.0(
15
)
Oil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For Business

Serving Dover, NH and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I had a zone issue with my forced radiant heat system. They were able to quickly diagnose the issue, and came up with a cost effective solution. I highly recommend them to anyone having furnace issues this winter, and they're super friendly!"
roth 275
roth 275
Roth 160 Gallon Tank
Response time9 hrs
Response rate100%
13 neighbors recently requested a quote
Sunrise Heating and Cooling
5.0(
5
)
Oil Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - Install

Serving Dover, 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."
24 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,355
)
Oil Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Dover, NH and surrounding areas

Approved (Corporate)

In business since 1988

Emergency services offered

Warranties offered

"I asked for a rep to come to give quotes for repair or replacement of my gas boiler. Before he came the old boiler failed, and Heritage was able to quickly install a new one so that we without heat and hot water for only a short time."
Golf Tournament
Water quality team
HVAC tech
Electrical team
Bryan, electrician

+24

159 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Derry Plumbing & Heating
Derry Plumbing & Heating
3.7(
43
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+1 more

Serving Dover, NH and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Been with another company for many years last time I call them for price to replace expansion tanks they gave price 859.00 thatà ¢à  à  s last time heard lot about Derry plumbing called Dave and they sent out a technician his name was Tyler very professional look over my unit told me had other issues with my system showing all possible that system was old he would only be taking my money to install the expansion tank and the unit is old and if fails this winter parts will be very hard to get note the unit been in house for 30 years have served my good so Tyler gave est that fair price to replace Dave gave me some options and was very professional so I set up appointment to have replaced thanks to Derry plumbing à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  à ¢à ­à  à ¯à ¸à  Thank you Paul Hickey Derry New Hampshire"
Rinnai install
Designer shower
Drain line
Showroom shower/tub stall
Faucet fixtures

+2

Response time10 hrs
Response rate98%
10 neighbors recently requested a quote
Avatar for Bourne Family Plumbing, LLC
Bourne Family Plumbing, LLC
4.7(
9
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Dover, NH and surrounding areas

Approved

Free estimates

Credit card accepted

Bourne Family Plumbing LLC is a veteran, family-owned and operated plumbing company proudly serving Derry, NH and surrounding communities with nearly a decade of hands-on experience. Built on integrity, discipline, and pride in workmanship, we deliver dependable plumbing solutions homeowners can trust.\n\nWe specialize in plumbing for home additions and professional water heater installation and replacement, ensuring your upgrades are done safely, efficiently, and up to code. Whether you’re expanding your home or need reliable hot water restored fast, we bring the skill and precision to get it done right the first time.\n\nOur mission is simple: honest pricing, clear communication, and quality work that stands the test of time. No shortcuts. No surprises. Just solid plumbing backed by strong values.\n\nWe proudly offer discounts for military members, fellow veterans, and seniors as a thank you for your service and dedication.\n\n

project photos
project photos
project photos
project photos
project photos

+14

11 neighbors recently requested a quote
Avatar for Paul The Plumber, LLC
Paul The Plumber, LLC
3.6(
19
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Dover, NH and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"The Paul the plumber team was really great. I needed a whole AC replacement, air handler and compressor/ heat exchanger. From quote to install was under a week! This all happened during those crazy hot 95+ degree days so it was urgent. The only issue I had was the air handler was installed backwards. The team had to come out a 3 rd day to make it right. But they did and no harm no foul. The price was right and the quality and craftsmanship looks really good. I definitely recommend Paul the Plumber."
New Boiler
Old Boiler
Rinnai Tankless Water Heater
Gas Furnace
A/C Condenser Install

+11

Response time2 days
3 neighbors recently requested a quote
Recommended by73%of homeowners
Showing 1-10 of 47
Install Boiler questions, answered by experts

Warmed or cooled air can escape your home through drafty windows and doors. If you notice any gaps, be sure to caulk and seal them. You can also hire a local pro for an energy audit to get a list of energy-saving recommendations. 

Finally, check your insulation. It can settle in over time and become less effective. The Environmental Protection Agency (EPA) estimates that you can save an average of 15% on heating and cooling costs (or 11% of total energy costs) by sealing leaks and making sure attics, crawl spaces, and basements have a nice layer of insulation.

Chilled water HVAC systems use water instead of traditional components and refrigerants. They're more common in commercial settings than residential ones but are slowly being adopted by some homebuilders to cool homes. As the name implies, the system keeps the water chilled at 40 degrees and circulates it through water coils. The water absorbs the heat from your home and drains outdoors. Condo apartments are more likely to have chilled water HVAC than single-family homes because this system is designed to cool several rooms or large areas individually.

The cost of heating oil fluctuates rapidly based on supply and demand, but the average price is between $4.00 and $4.50 per gallon, which means filling a standard 275-gallon tank would cost between $1,100 and $1,240. Much like automotive gasoline, the price of home heating oil changes constantly, so the only way to get an accurate and current price per gallon is to contact a heating oil delivery company. Some companies also offer contracts with a set price that should be an average cost over the contract term.

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.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

The Dover, NH homeowners’ guide to boiler installation services

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