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Best boiler installation pros near Des Moines, WA

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    Average homeowner rating
  • Verified reviews icon2.1k+
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Des Moines - 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 Des Moines, WA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Ranger did a great job. The estimators were friendly and thorough, the installers and team we encountered were all respectful and hard working. There was a problem with the electronics in the thermostat from the factory, they worked late and had to bring a new thermostat the next day, but the new one works perfectly. We will hire again for any other HVAC needs. We chose a higher quality AC unit and are glad we went with a quieter model, the unit is so quiet in the backyard."
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 Des Moines, 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 Des Moines, WA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"I had an excellent experience with Jose Plumbing Excellence Northwest. They first helped me fix a leak, and later replaced my water heater when it went out. Both times, they were able to schedule me right away, which I really appreciated. The team was professional, efficient, and made sure everything was done correctly. Their customer service was great from start to finish, and they made the whole process smooth and stress-free. I highly recommend them for any plumbing needs!"
Boiler
Water Heater
Response time1 day
Response rate100%
3 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 Des Moines, 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 Des Moines, WA and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Aaron Charles was our technician. He quickly diagnosed the condition as a faulty circuit board, called to have a co-worker bring a new one and got the furnace running like new. We were so impressed by how quickly he diagnosed the problem and corrected it. We will certainly use Mercurio's (and, hopefully, Aaron's) services again."
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+8

Recommended by93%of homeowners
Avatar for Home Comfort Alliance
Home Comfort Alliance
4.7(
341
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Des Moines, WA and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"One afternoon when leaving our local Costco we noticed a booth advertising Lennox air conditioning for the home. After the last 4 years of record summer heat, we decided to begin the process of investigating this solution. The appointment for the estimate went well with the entire process carefully explained and all of our questions answered. So, we decided to pull the trigger and buy the system. To our delight, company had an opening for the installation a week ahead of the original date and things only got better from there. On the day of the install, Isaac and his crew arrived on time and enforce. At one point there were 6 people and three trucks, all tightly coordinated. Everyone was courteous, professional, and fast. In a little over 6 hours the system was completely installed and thoroughly cleaned up. Overall, we could not be happier with this decision and highly recommend this company for anyone considering whole house A/C. Replacing 13 fans and 2 portable air conditioners is an elegant solution."
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Choose Home Comfort Alliance for professional HVAC installation.
Seattle’s HVAC installation pros provide efficient, reliable service.
Get Reliable, High-Quality HVAC Installation in the Seattle-Tacoma Area.
Home Comfort Starts with Professional HVAC Installation.

+1

Response time1 day
Response rate100%
Recommended by91%of homeowners
Avatar for Washington Energy Services
Washington Energy Services
4.5(
992
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Des Moines, WA and surrounding areas

In business since 1957

Free estimates

Emergency services offered

"Before the pandemic, we got our estimates for a full HVAC system (AC/Furnace/Air filtration/Thermostat) and Generator from Washington Energy Services. Then the pandemic happened which caused supply chain issues that hindered us from obtaining the products and equipment we wanted. Charles, our sales representative, gave us his word that he would do everything in his power to make sure we got the system we preferred, and he made it happen! Charles went above and beyond to meet our needs and preferences. He brought us the absolute best installers in the business. Roman, Pavel and his assistant, who were in charge of the HVAC system, along with Daniel and his assistant, who installed the Generator. They all did an amazing job planning, organizing and implementing a super quality, white glove installation, along with some added customization which was simply genius. They were very meticulous about every detail and didn’t leave any stone unturned. They were also very friendly and answered all of our questions and concerns. Despite the challenging circumstances Charles and his staff and all the admin contacts from Washington Energy Services came through for us. Their knowledge, expertise and customer service are second to none. They are stacked with talented professionals and have amazing customer service. From top to bottom they are the absolute best and I highly recommend them to everyone!"
Window Installation
HVAC
Window Installation
HVAC
After1

+39

Recommended by92%of homeowners
Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,393
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+1 more

Serving Des Moines, WA and surrounding areas

In business since 2013

Emergency services offered

Warranties offered

"I had my sump pump replaced. Blaine explained all my options. I decided to have him replace the pump, install a deeper pit, replace and pipe the discharge line and tie it into my gutter downspout. He and his co-worker arrived right on time. They were friendly, polite and made sure to explain all the work that they were doing. He made sure that the pump operation could not be heard from inside the house. I highly recommend Seatown and plumber Blaine in particular"
Generator Repair
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Electrical Panel Repair
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+44

Recommended by94%of homeowners
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Install Boiler FAQs, answered by experts

If you go to turn it counterclockwise and it won’t turn anymore, it’s open. Like most other valves, you should be able to turn a radiator valve counterclockwise (to the left) to open it and clockwise (right) to close it. To close a radiator valve, turn it clockwise until you meet some resistance and can’t turn anymore, but do so carefully to avoid breaking the valve.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

If your boiler is 20 years old, it’s time to get a new one. Although it may seem to be working fine, it’s likely eating up more fuel than it should. Also, compared to a brand-new boiler, one that’s 20 years old is probably not working as well. When you get your new unit, you’ll notice that your home is heating more quickly, and the heat is consistent throughout all the rooms.

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.

Yes, most municipalities require a permit for propane boiler installation to ensure safety and code compliance. Permit fees vary by location and are often included in your installer’s quote, as they’ll handle the permitting process. Ensure that you always check local regulations before starting your project to avoid fines or delays.

The Des Moines, WA homeowners’ guide to boiler installation services

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