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TRUSTED BY STRATHAM, NH HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon765
    Verified boiler installation services reviews

Verified Reviews for Boiler Installation pros in Stratham, NH

*The Angi rating for Boiler Installation companies in Stratham, NH 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 Stratham, NH 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 July 23, 2026

Find Boiler installation pros in Stratham

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 Stratham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Palmer Gas recently installed a propane tank for us, and we were impressed with their services. They were excellent to work with. Josh who was the installer was conscientious, knowledgeable and went the extra mile. We highly recommend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Moulton Mechanical Services
Moulton Mechanical Services
4.9(
131
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Stratham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"Jarod installed a new high efficiency boiler and extensively re-plumbed our central heating system about 12 years ago. He is quite knowledgeable and explained clearly the work he would be doing. The project was completed in a timely manner to our complete satisfaction. I highly recommend him."
new heating system
SYSTEM INSTALLATION
BOILER INSTALL
BOILER INSTALL
Response time10 hrs
Response rate87%
18 neighbors recently requested a quote
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Avatar for Ethical Home Pro, LLC
Ethical Home Pro, LLC
4.9(
38
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Stratham, NH and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Kyle P. did all the water related services. Last year he installed a water softener tank and this year installed a sediment filter and UV tank as well as an arsenic treatment tank. He is always on time, explains work thoroughly, he's neat about his appearance and how he handles the work environment. Kyle is personable and pleasant.Highest recommendation. This company installed the ductless midi's in our home 3 years ago and in every aspect they are fantastic."
Condenser
Condenser
Air grill ceiling
Air grill ceiling
Air grill ceiling

+172

Response time6 hrs
Response rate95%
Recommended by100%of homeowners
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Sunrise Heating and Cooling
5.0(
5
)
Electric Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Stratham, 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."
11 neighbors recently requested a quote
Recommended by40%of homeowners
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Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,356
)
Gas Boiler or Radiator Heating System - Install

Serving Stratham, 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

110 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Bourne Family Plumbing, LLC
Bourne Family Plumbing, LLC
4.8(
12
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Stratham, NH and surrounding areas

Approved

Free estimates

Credit card accepted

"Colin was very quick to contact me and get out to my home to fix my plumbing issue."
project photos
project photos
project photos
project photos
project photos

+14

6 neighbors recently requested a quote
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Avatar for Easy A's Plumbing & Heating, LLC
Easy A's Plumbing & Heating, LLC
4.5(
3
)
Oil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For Business

Serving Stratham, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

Welcome to Easy A's Plumbing & Heating, LLC. We are excited to exceed your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices, and customer satisfaction is our number one priority. Call us now!

Under the camp
Attic
Camp
Camp
Camp

+68

Response time1 day
Recommended by100%of homeowners
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Avatar for Maffei Plumbing and HVAC, LLC
Maffei Plumbing and HVAC, LLC
3.8(
12
)
Gas Boiler or Radiator Heating System - Install

Serving Stratham, NH and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

At Maffei Plumbing and HVAC, LLC, we are committed to your comfort. With an experienced and qualified staff to provide quick service for any service needed. We can solve any problem with a friendly face. Give us a call for a free estimate.

Air Conditioning Installation
Rinnai Tankless
Water Filtration
Heating Systems
Heating Systems

+6

Response time1 day
65 neighbors recently requested a quote
Recommended by12%of homeowners
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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 Stratham, NH and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Cost was reasonable, Quality of work was Great. After testing unit No further action was needed. Furnace is working fine. All fears of issues have been resolved. Am Happy with results. Thanks to Jarrod the technician, every issue has been cleared. Highly recommend."
New Boiler
Old Boiler
Rinnai Tankless Water Heater
Gas Furnace
A/C Condenser Install

+11

Response time2 days
5 neighbors recently requested a quote
Recommended by73%of homeowners
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Showing 1-10 of 51
Install Boiler questions, answered by experts

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

Boiler installations and replacements cost between $3,600 to $8,400. Expect to pay around $5,900 on average for a new boiler, including installation. Adding new radiators or heaters to the boiler may include separate costs if you are also upgrading those components, so the final price may be higher. To decrease costs, you can look for local energy rebates for using a boiler and wait until installers are offering discounts for a first-time installation.

Most installations take 2-5 days, including old system removal and setup.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

On average, you’ll need about two gallons of oil per day to heat your house when it’s 50 degrees Fahrenheit outside. Most oil tank capacity is about 275 gallons, and heating your house with two gallons of oil per day will last about four and a half months. This consumption will vary depending on the climate and average temperature in your location. For example, if the winters are longer and colder where you live, you’ll probably need to refill your oil tank at least once to get through the winter.

The Stratham, NH homeowners’ guide to boiler installation services

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

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