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Best boiler installation pros near Clackamas, OR

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    Average homeowner rating
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    Verified boiler installation services reviews

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

Avatar for Service Now Inc. Heating & Cooling
Service Now Inc. Heating & Cooling
4.8(
981
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Clackamas, OR and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"The ServiceNow Team did a nice clean install, they were respectful of Social Distance and explained all steps as went along. Site was left clean each day. Installed the higher efficient unit for just bit more than what others quoted for lower efficient units. Nice Job guys....."
Morris Marks House
Morris Marks House
Refrigeration lines for Ductless Units
Morris Marks House
Carrier Multi Port outdoor unit.

+22

Response time10 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for 3 Mountains Plumbing
3 Mountains Plumbing
4.2(
653
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Clackamas, OR and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"The whole experience with 3 Mountains Plumbing was outstanding from Nicole at the office to Jon Marc and Peter, the plumbers. They originally scheduled me for an appointment 5 days out, but Nicole watched appointments carefully and moved my appointment to the same day I called. Jon Marc, the plumber, was very knowledgeable and professional. He gave me different options, which allowed me to decide what worked best for me. He even gave me a teacher discount. After installing my water heater at 8:00 p.m. at night, he discovered a manufacturing problem with the water heater. He called another plumber, Peter. Peter was going off shift and was at the office, but got another water heater and brought it to my house so Jon Marc could install it! I think other plumbers would have said that they needed to come back the next day, but Jon Marc stayed until 10:00 p.m. installing the water heater. I will never use another plumbing company because 3 Mountains is the best! Nicole, Peter and Jon Marc... Thank you!"
The 3MP Team (Circa 2017)
Bill Kerrigan
Alex Grabbing a Photo
Rolling Through Lake Oswego
Random Patch Photo

+103

Response time1 day
341 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Precision Air
Precision Air
3.5(
6
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Clackamas, OR and surrounding areas

Approved

In business since 1952

Free estimates

Emergency services offered

"They did a great job! I enjoyed speaking with Andrea at the office, she got me scheduled fairly quickly. David came out on time and was able to get my furnace installed. I am very pleased with reaching out to them. Would recommend others to use them."
Vancouver Residential Heat Pump Installation
Vancouver Residential Heat Pump Installation
Additional Photos
Additional Photos
Additional Photos

+5

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for Boiler Brothers Heating and Cooling
Boiler Brothers Heating and Cooling
New to Angi
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Clackamas, OR and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

We have over 30 years of industry experience, and is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Boiler, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction! \n \n

Response time6 hrs
2 neighbors recently requested a quote
Avatar for Anderson Heating & Cooling
Anderson Heating & Cooling
4.8(
465
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Clackamas, OR and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I found Anderson Heating and Cooling when looking for someone to complete annual maintenance on our aging heat pump. I was impressed with the representative that came out (I completely forget his name). My wife and I have been saving for a while to replace our current HVAC system (installed in '93). We decided to go forward with things this Fall and, in preparation, I arranged five companies to give estimates. I had some good (and not so great) experiences) but kept coming back to Anderson. The price was right and the owner, Steve, was low-key, knowledgeable, and straight forward. I'm happy we chose them to install replace our system. The installation appointment was incredibly smooth and I was never pressured or upsold. There were no surprises and the price was exactly as estimated. I hope to enjoy a lot of low-to-no maintenance years to come with our new system, but I will definitely be using Anderson for my future needs. I highly recommend them as a company."
Response time1 day
Recommended by95%of homeowners
Avatar for Specialty Heating & Cooling LLC
Specialty Heating & Cooling LLC
4.8(
611
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Clackamas, OR and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Obtained four bids for this work and Specialty had the second low bid in a very close overall bidding exercise. They had a couple of upgrades included that others did not have. Nic was great to work with in selecting the appropriate system. The installers were on time and removed all old equipment, installed the new furnace and air conditioner and cleaned up within 7 hours. Very professional."
New Gas Furnace and Air Conditioner
Dryer Vent Cleaning
Duct Cleaning
New Air Conditioner
Additional Photos

+37

Response time2 days
Recommended by96%of homeowners
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Install Boiler FAQs, answered by experts

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.

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.

Installing a boiler requires training, a specific skill set, and extensive experience. Boiler installation can be extremely dangerous, as it involves working with water lines, gas lines, and electricity. For this reason, it’s strongly recommended that you hire a professional to install your boiler. Some states even consider it illegal to work on a boiler without the proper licensing.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

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.

The Clackamas, OR homeowners’ guide to boiler installation services

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