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Best boiler installation pros near Milton, WA

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TRUSTED BY MILTON, WA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon2.3k+
    Verified boiler installation services reviews

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

Avatar for Ranger Heating & Cooling
Ranger Heating & Cooling
4.8(
104
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Milton, WA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Crew was very prompt and professional. Took care to put booties on whenever entering the house and courteous of your needs. Very nice, professional installation and site picked up and cleaned after completion. Thorough walk through and explained any questions don’t hesrtate to call and they will be more than happy to come back out and help."
Dominic with our great customer standing beside a Mitsubishi ductless outdoor unit.
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Response time2 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for THE JANES COMPANY, INC.
THE JANES COMPANY, INC.
5.0(
6
)
Gas Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install+2 more

Serving Milton, WA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Jane's replaced my 20-year old Munchkin boiler with a super efficient, modern Rinnai. Everyone was a joy to deal with. Service was excellent. Darian, who scheduled and arranged the replacement, and Greg and Oscar (who did the work) were fantastic. Excellent service, especially since I live on Lopez Island, which is not easy to get to. Competent, good-natured, hard-working, nice folks."
Boiler installation
Bellingham Boiler Upgrade
23 neighbors recently requested a quote
Avatar for Plumbing Excellence Northwest, LLC
Plumbing Excellence Northwest, LLC
5.0(
9
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Milton, WA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Jose Ruiz was very professional explained every step of the process. As someone who knows nothing about plumbing he walked me through all the details. Thank you Jose for coming out to my home within 2 hours on a Friday evening. A job well done at a reasonable price. You Rock!!!"
Boiler
Water Heater
Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for Robert the Plumber and HVAC 2 LLC
Robert the Plumber and HVAC 2 LLC
5.0(
7
)
Gas Boiler or Radiator Heating System - Install

Serving Milton, WA and surrounding areas

Approved

Emergency services offered

Warranties offered

Credit card accepted

Robert the Plumber and HVAC 2 is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to ther details of each project that we are involved with. Please feel free to contact us today!

New water Heater Install
Leaking Water heater
Maintenance
A/C Maintenances
Water Heater Install

+4

70 neighbors recently requested a quote
Avatar for AAA Heating & Air Conditioning
AAA Heating & Air Conditioning
4.8(
237
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Milton, WA and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"Service was excellent/price competitive. Furnace went out during week of snow storm. Bob & Allen made it to my house and were able to install my furnace. Even though it was very cold and miserable (with them getting stuck in the snow and having to dig out just to make it in and out of my driveway) they remained professional and upbeat. You will see by the attached photos the huge effort these two men had taken to provide heat to a customer who had none. Thank you for going above and beyond. Will continue to be an annual service customer."
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Our Service Center
Response time1 day
5 neighbors recently requested a quote
Recommended by96%of homeowners
Mercurio's Heating & Air Conditioning
4.7(
157
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Milton, WA and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"This company made the process of getting a heat pump (new installation) very easy for us. They were fast on coming out for the initial bid (Brandon is great!) and they were super fast on the installation. Lorin and his crew were delightful and did an excellent job! There price for everything was way better than any other quote we received and they were very conscientious about how they made everything look. We are very satisfied with every aspect of this project and highly recommend them! I would definitely hire them again!"
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+8

Recommended by93%of homeowners
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Install Boiler FAQs, answered by experts

Professionals can recommend efficient layouts or appliances and ensuring regulatory compliance.

You can use a boiler and a furnace, although it’s not common to use both for whole-house heating. For example, your furnace may take care of HVAC heating through your vents, while a boiler powers your floor-based radiant heating in the bathrooms. Mixing and matching like this gives homeowners a variety of heating possibilities.

Always consult your manual for specific pressure numbers. Many expansion tanks come pre-pressurized at a specific PSI range, anywhere from 12 to 40 PSI, designed for a range of home boilers. You should not have to pressurize an expansion tank yourself, only the boiler system. If your system has a tank that needs to be manually pressurized, this is generally a job for professionals and their tools.

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.

A furnace is a big unit where gas, heating oil, or electricity heats the air. The warmed air is then pushed back out through ducts and vents. 

A boiler uses electricity, heating oil, or gas to heat water that is pushed into the room through a radiator. This is one of the oldest and most effective ways to heat a house, but radiators can also be unsightly and leave hot and cold spots in the room.

Heat pumps use a refrigerant to move heat from outside into the house and return it to the room through ducts and vents.

The Milton, WA homeowners’ guide to boiler installation services

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