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TRUSTED BY DOVER, NH HOMEOWNERS

  • Average homeowner rating star icon4.5
    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
Additional Photos
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%
11 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."
23 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

165 neighbors recently requested a quote
Recommended by91%of homeowners
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
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Install Boiler questions, answered by experts

No, boilers and water heaters are not interchangeable because they serve different primary functions. Boilers are used for central heating systems, providing hot water or steam to heat your home. In contrast, a water heater's purpose is to supply hot water for daily household use, such as for faucets and showers. A water heater alone cannot supply the warm water or steam needed for a central heating system.

While they are not interchangeable, it is common to have both a boiler and a water heater. In fact, a conventional boiler often works best when a water heater system is already in place. The two systems can be combined to provide both heating and hot water, either by pairing a boiler with an indirect water heater or by installing a premade combination boiler-water heater unit. For home heating, some homeowners may also opt for a furnace instead of a boiler.

If you have a closed-system boiler that requires an expansion tank, you cannot safely operate it without one, as this risks extensive damage or even explosions. You must find a way to make room for the installation. Options include repositioning the boiler, rerouting the boiler piping to a more open area, or performing minor remodeling to create the necessary space. If you are unsure whether your boiler needs an expansion tank or how to best accommodate one, it's recommended to have a local heating service professional assess the situation. They can confirm the requirement and suggest the most practical solution.

All modern boilers are condensing boilers because they’re the most efficient type. Instead of extra heat leaving through the flue, these boilers trap the heat and use it to heat the house. Whether you choose a combi boiler, system boiler, or regular boiler, you can opt to get a condensing system. If you have an old boiler that’s not a condensing boiler, it’s a good idea to get an upgrade.

Due to fuel line connections and venting complexity, professional installation is required for safety and efficiency.

The average lifespan of a boiler is typically between 15 and 20 years, though some may last for as little as 10 years while others can reach 30. A boiler's longevity is influenced by several factors, including the quality of the unit, proper installation, and consistent professional maintenance.

The material also plays a significant role. Older boilers made from durable cast iron can last for over 20 years, with some functioning for up to 50 years. However, it's important to consider their lower efficiency, which can lead to higher utility bills. Modern boilers, often made from steel alloys, are designed to withstand high pressure and temperatures and have an average lifespan of about 20 years.

To maximize your boiler's lifespan, ensure it is installed correctly, have it professionally maintained each year, and address any necessary repairs immediately.

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.