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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1k+
    Verified boiler repairs reviews

Verified Reviews for Boiler Repair pros in Berkeley, CA

*The Angi rating for Boiler Repair companies in Berkeley, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.

*The HomeAdvisor rating for Boiler Repair companies in Berkeley, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.

Last update on May 08, 2026

Find Boiler repair pros in Berkeley

Avatar for H K & S Plumbing Co.
H K & S Plumbing Co.
4.3(
96
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessGas Boiler or Radiator Heating System - Repair+4 more

Serving Berkeley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"I highly recommend this company!!! He responded within minutes of my searching for a plumber. He came the next day and installed a new tankless water heater. He also found a faulty electrical outlet and repaired it as well. Quality workmanship. I will keep his number. His name was Harry."
H K & S Plumbing Co.
Response time11 hrs
26 neighbors recently requested a quote
Recommended by73%of homeowners
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Avatar for Tyndall HVAC Inc.
Tyndall HVAC Inc.
4.4(
23
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"These guys are AMAZING! They replaced a furnace and overall I was VERY
IMPRESSED. Their prices were great, their service was 10/10 and overall
very professional and trustworthy. I rarely review, but I feel good
about recommending them because I know you will be in great hands.
"
Peter Tyndall (Owner)
Our Trucks
New unit Installed
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+5

Response time11 hrs
Response rate100%
12 neighbors recently requested a quote
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Avatar for HVAC Utor Services
HVAC Utor Services
5.0(
31
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Went very well. Showed up when promised and completed as promised. I would hire Utor Services again. Ron Livermore."
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+24

Recommended by100%of homeowners
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Avatar for Bell Brothers Plumbing Heating & Air
Bell Brothers Plumbing Heating & Air
4.6(
401
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 1954

Free estimates

Warranties offered

"We were super-pleased with ABC. Our air conditioner unexpectedly stopped working last night. We called ABC just before 8pm and were able to schedule a service call for this morning. The tech (Bill Sweeney) came out this morning, diagnosed the issue and made the repair - all before 11am. Many thanks to ABC and Bill! We will definitely be repeat customers should we run into any issues in the future!"
AIR CONDITIONING REPAIR The AC repair company in Sacramento and the East Bay who gets it done right the first time. When you need an air conditioning repair, you deserve on-time service, upfront pricing, and friendly technicians that you’re comfortable having in your home. At Bell Brothers, we’ve been doing exactly that for 30 years.
There comes a time in the life of any furnace and heating system when continuing to repair and maintain it is no longer cost effective. We can install a new, more energy-efficient heating system that keeps you comfortable and saves on energy costs. You’ll love the guarantees we give with every furnace installation, including: Installation Workmanship Guarantee ‘No Lemon’ Guarantee Guaranteed Upfront Quotes
AIR CONDITIONING REPLACEMENT When you need a new air conditioning system, it’s not the time for guessing if you’re getting the best replacement experience. You need to know FOR SURE.
WATER HEATER REPAIR OR REPLACEMENT No hot water in your home? Is there leaking, dripping, or staining around your water heater? Don’t panic. But don’t wait either. Call Bell Brothers, Sacramento and the East Bay’s top-rated water heater repair & replacement company.
Air Conditioning Service, Repair, & Installation With REAL Guarantees & NO Surprises. We have 9 guarantees, and all of them are in writing. This kind of protection is true peace of mind: Homeowners love our No Surprise Guarantee: the price we quote is the price you pay. You’ll never have to be worried about being shocked by the final invoice. We have other great guarantees, too:

+5

Recommended by94%of homeowners
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Avatar for Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
4.6(
688
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"The team of four was very professional and performed an excellent job in a record period of time. Just one day to take the old furnace away, replace all the old boots and duct work and install the new furnace. They paid a lot of attention not to damage or dirty the floor/carpet. I am very happy with their performance. They may not be the cheapest on the block but it was all worthed and you only have to do that once in your lifetime."
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+42

Response time9 hrs
Response rate100%
Recommended by91%of homeowners
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Avatar for PrimeWork Construction
PrimeWork Construction
4.8(
104
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 2012

Free estimates

"Joni an d his crew renovated our master bathroom and part of our kitchen. The bathroom renovation involved rebuil ding the shower (the original one had a leaky basin) and building a beautiful new vanity with a match ing set of cabinets. The kitchen renovation invoved a lot of retiling which all looks great. They also helped us fix our pipes after somne damage they had.I would definitely hire them again."
House Renovation - Brian Project
House Renovation - Brian Project
House Remodeling Mountain View
House Remodeling San Jose Project
House Remodeling Milpitas Project

+468

Recommended by100%of homeowners
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Avatar for Enlighten Electric
Enlighten Electric
5.0(
28
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 1995

Free estimates

"Excellent. Pann was professional, kept his workspace clean, explained the situation and gave us good options for repair and was overall very pleasant to work with. Highly recommend."
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+2

Recommended by100%of homeowners
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Avatar for Green Apple Duct Cleaning
Green Apple Duct Cleaning
5.0(
18
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

Green Apple Duct Cleaning is a family company where we provide professional Duct Cleaning and Dryer Vent cleaning throughout the all around the bay area. Offering a variety of money-saving solutions.

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+18

Recommended by100%of homeowners
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Avatar for Big Blue Plumbing
Big Blue Plumbing
4.0(
427
)
Electric Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - Install - For BusinessElectric Boiler or Radiator Heating System - Repair+5 more

Serving Berkeley, CA and surrounding areas

In business since 2000

Emergency services offered

Warranties offered

"Part broke and they fixed it under warranty and quickly."
High Efficiency Water Heaters
Drain cCleaning
Presentation
Technician Seal of Safety
Green Screened

+15

Response time1 day
Recommended by89%of homeowners
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Avatar for Posada's Heating & Air Conditioning
Posada's Heating & Air Conditioning
4.9(
10
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Berkeley, CA and surrounding areas

In business since 2004

Free estimates

"I'm happy with their service. Good value of money and the quality of the work was good. The owner was friendly. I was able to talk to him freely and he was able to meet all my requirements and needs."
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+23

Recommended by100%of homeowners
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Showing 1-10 of 102
Boiler Repair 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.

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.

To extend your HVAC system’s lifespan, it’s crucial to keep up with maintenance. This includes changing filters and thermostat batteries, keeping the outside unit clean and clear of clutter, and lubricating moving parts. Watch out for leaks, mold buildup, and blockages to ensure your unit stays in good working order. Spotting these issues early can be the difference between a simple, wallet-friendly repair and an expensive replacement.

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.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

The Berkeley, CA homeowners’ guide to boiler repairs

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

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