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Best boiler installation pros near Seattle, WA

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    Verified boiler installation services reviews

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

Avatar for Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
4.3(
225
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Seattle, WA and surrounding areas

Approved

In business since 1954

Emergency services offered

Warranties offered

"I purchased a new Navien NPE-240A2 Tankless Water Heater and had it installed. I'm loving the new water heater. It replaces an old Noritz tankless that died just before this installation. The on-site estimate was what sold me. Ken went through all the details and answered a lot of questions from me. Zachary came out with Austin and performed the installation just like I discussed with Ken. Zachary kept me in the loop throughout the installation to ensure I was in agreement with how it was going. Zachary always had my interest at heart and ensured no corners were cut. The installation is much cleaner, and more correct than the previous tankless company did. Zachary even listened to my concern about the astectics of the exterior exhaust and quickly found an easier and cleaner looking way to address my concern. He also removed an old recirculation pump and replaced a new main house shutoff valve. The entire area was treated respectfully and left cleaner than they found it."
Outdoor Ductless Unit
Indoor Ductless Unit
Outdoor Ductless lineset and Unit
Pump System
2 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Airpros Energy
Airpros Energy
4.7(
89
)
Boiler or Radiator Heating System - Install or Replace

Serving Seattle, WA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"I'd been wanting to get of our old electric baseboard heaters for a long time, and replace it with something more efficient, and Mark helped my understand the differences between a ductless mini-split system and a ducted heatpump system. Even in our small house, the ducted system was the way to go. Mark and his installers were professional and efficient, and answered all my questions. When the thermostat was acting a little odd, he sent a technician over to calibrate it, free of charge. There was a small issue where I initially got the wrong specs for the electrical, and as a result I had the electrician install unnecessary circuits, but Marc reimbursed me for the cost."
Comfort Built for the PNW
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Evergreen Home Heating & Energy
Evergreen Home Heating & Energy
4.4(
106
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Seattle, WA and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"Evergreen installed a new hybrid heat pump system in my house. After researching the options, Evergreen was not only the most reasonable price, but they also scoped out a hybrid system where they would install new duct work and a single air exchanger in the attic and a minisplit in the basement. Scott, the sales person, did not try to upsell me on number of zones (others tried to get me to get 2 units in the basement) and after 2 months with the system, the single unit in the basement is heating the whole basement to our needs. All this was done at a price still considerably lower than the "standard" system price being offered by one of the bigger, similarly named companies. Evergreen was also the only company to propose a hybrid system where they would install a single exchanger in the attic and run new ceiling ducts to the rooms. This was appealing because we don't need to have the cassettes in each room and we didn't need to line the outside of the house with conduit for the cassettes (also the bathroom gets heat, too). Scott was great to work with, answered all my questions, and did his best to size the system correctly. Installation was smooth. There was a small hiccup where the installer accidentally broke a basement window, but Evergreen squared it away. Don and his team were great and the inspections passed. After install support has been great. Denise has been responsive to my questions. Overall, the experience was great with Evergreen and I highly recommend them."
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+9

Response time5 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for THE JANES COMPANY, INC.
THE JANES COMPANY, INC.
5.0(
6
)
Gas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - Install+2 more

Serving Seattle, 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 All Pro Plumbing Northwest, LLC
All Pro Plumbing Northwest, LLC
4.5(
576
)
Gas Boiler or Radiator Heating System - Install

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Miguel is my new plumber from now on- he was very patient in explaining what I needed to know about the job on hand. He was very polite and made sure I was comfortable with the choice I made. He also gave me proposals for a future project (possibly changing my water heater because itâ s 11 years old now , no issues-not leaking but I want to be proactive and to increase the property value as well). I will gladly recommend him to anybody who needs a new plumber. Heâ s just down right AWESOME!"
Our Team
119 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Lifetime Heating and Air Conditioning
Lifetime Heating and Air Conditioning
4.5(
8
)
Gas Boiler or Radiator Heating System - Install

Serving Seattle, WA and surrounding areas

Approved (Corporate)

In business since 2016

Free estimates

Emergency services offered

"I’m very pleased with the work they did. They were knowledgeable, professional, and responsive. I would definitely recommend them for all heating and cooling needs. They also service and install hot waters heaters, which we didn’t need, but I would recommend them for that as well."
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+54

8 neighbors recently requested a quote
Recommended by87%of homeowners
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Install Boiler FAQs, answered by experts

The best time to buy home heating oil is in the summer when the demand is lowest, as the prices are usually lower. However, waiting until the summer to buy is often unavoidable unless you install a separate storage tank. If you have the space for a second tank, you can expect to pay between $1,000 and $4,000 for the oil tank replacement or installation, depending on the capacity and location. You could quickly recuperate these costs, though, by stocking up on heating oil in the summer and avoiding deliveries in the winter when prices are highest.

No, there isn’t always water in radiators. In a one-pipe system, water is constantly circulating from the boiler to the radiators and back. In a two-pipe system, water travels through two separate channels: one that goes to your radiators and one that returns back to the boiler so it can heat up again.

The cost-efficiency of baseboard heaters depends on the type and how you use them. Generally, standard electric baseboard heaters can be expensive to run because they use electric resistance heating, which is less energy-efficient than systems like forced-air or heat pumps. However, hydronic and gas versions are typically much cheaper to operate. Hydronic models are more energy-efficient because they heat a liquid that retains warmth longer, preventing the thermostat from turning on and off as often. The overall running cost is also influenced by local electricity rates, your home's insulation, and your usage habits. To increase efficiency, you can use baseboard heaters for zoning, meaning you only heat the specific rooms you are using.

The main difference between an outdoor wood furnace versus an outdoor wood boiler is what each appliance is heating. An outdoor wood furnace burns wood to create heat, which warms the air and moves it through the ducts in your home. An outdoor wood boiler uses the heat from burning wood to warm water, which goes through pipes to radiators in the home.

Professional HVAC installation requires licensed expertise in several areas, including electrical- and plumbing-related work. An HVAC team must know how to safely handle regulated refrigerant chemicals and the gas, oil, or propane used in furnaces and boilers. A proper HVAC installation protects your home from energy loss, fires, and even carbon monoxide leaks.

The Seattle, WA homeowners’ guide to boiler installation services

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