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TRUSTED BY SUNOL, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon2.6k+
    Verified boiler installation services reviews

Find Boiler installation pros in Sunol

Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
717
)

Serving Sunol, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"It went great, and I highly recommend them for the quality of their work, I just think $829 dollars to install four valves was a bit extreme. I'm sure there are more reasonably priced plumbers."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate99%
55 neighbors recently requested a quote
Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
4.8(
135
)

Serving Sunol, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"great service, heater needed a good cleaning everything was great. Duke was responsive and gave awesome feedback and trustworthy service. I will use again."
Heat Pump Repairs & Installations
Central Air Cut-Ins
Electric Furnace Repairs & Installations
Response time4 days
34 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Comfort Energy, Inc.
Comfort Energy, Inc.
4.3(
251
)

Serving Sunol, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I hired Comfort Energy to replace my moms heater after reading excellent reviews. The reviews were spot on! Eddie, the customer rep, and Nima, the installer was knowledgeable, straightforward forward and professional. Nima did an excellent installation, followed Covid protocols, and did clean up afterwards. We could not be happier!"
COMFORT ENERGY AWARDS
Our Comfort Energy Team
COMFORT ENERGY AWARDS
Best of Milpitas 7 Years in a Row! 2015 - 2022
Angie's List A Rating

+27

Response time11 hrs
184 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for HVAC Utor Services
HVAC Utor Services
5.0(
31
)

Serving Sunol, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Understandably and as expected all HVAC contractors were on high demand and all booked up for several days out, so no one in the area was available until the following week at the earliest. We called Mr. Diego Utor and lime everyone else he was also all booked up; however, he added us to his already full day and said he would do his best to stop over. Diego kept his word and arrived late afternoon that very same day. He quickly diagnosed the problem, which turned out to be a bad capacitor. He replaced the part and also checked the refrigerant level for us. Diego Utor is responsive, courteous, honest and his rates are very reasonable for his services. I would highly recommend HVAC Utor Services to anyone for all of their heating and air conditioning needs, whether it's repairs, routine maintenance, or new service installations."
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+24

Recommended by100%of homeowners
Avatar for Bell Brothers Plumbing Heating & Air
Bell Brothers Plumbing Heating & Air
4.6(
401
)

Serving Sunol, CA and surrounding areas

In business since 1954

Free estimates

Warranties offered

"Great job all around moving and replacing our heater, installing new ducting and adding AC. Michael was great helping us on the sales side, and Stuart and his crew (Juaquin, Derek, and Angel) worked hard to get our AC up and running right before a bad weekend heatwave. De Ann (sp?) was really helpful with coordinating schedules around our lives and everyone had clear and prompt communication. Definitely would use ABC again for other work."
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
Avatar for Attic Masters insulation Services
Attic Masters insulation Services
4.8(
111
)

Serving Sunol, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Very happy, Arrived on time and got right to work. Sealed off work area with plastic curtain to protect the rest of the house from dust. once all asbestos was removed Juan and his crew were ready to go installing the new ducts. Everything went smoothly and once complete Juan showed me the work they had done and tested our system to make sure everything was working as it should. They vacuumed the area and left it as they found it."
HVAC Duct Replacement
Insulation Installation & Attic Cleaning
Air Sealing & Rodent Proofing
New Construction
Vapor Barrier Install

+204

Recommended by94%of homeowners
Avatar for Enlighten Electric
Enlighten Electric
5.0(
28
)

Serving Sunol, CA and surrounding areas

In business since 1995

Free estimates

"Pann was knowledgable, responsive, did all work correctly, on time, and within budget. He went above and beyond by taking care of issues he uncovered that we were not aware were there. He worked with us to come up with the idea of installing an Internet closet that made it possible to have less visible cables and cords running on our walls. The finished project works great and I appreciate having a clean look behind my TV stand. Running the new electric to the detached garage was hard work. Pann crawled around under our house to pull the new wiring through. He even worked within our tight schedule of 2 weeks! Again, everything works great and we will definitely hire again for future needs."
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+2

Recommended by100%of homeowners
Avatar for Green Apple Duct Cleaning
Green Apple Duct Cleaning
5.0(
18
)

Serving Sunol, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Great! Tony called in advance & was very prompt. Personable and professional, he quickly hooked up his equipment and let the machines do their work, which took about 30 minutes for our 1400 SF house. He took photos of the intake duct so we could see their condition. I will be scheduling a manual deep cleaning of the whole system next!"
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+18

Recommended by100%of homeowners
Avatar for JAZZ HEATING & AIR CONDITIONING
JAZZ HEATING & AIR CONDITIONING
5.0(
8
)

Serving Sunol, CA and surrounding areas

In business since 1986

Free estimates

Credit card accepted

"It's hard to put into a Yelp review how grateful we are to have found these guys. I am in a predicament to say the least. We hired just about the worst contractor we could have hired. We did our due diligence but they were masters of the con. What can u do? (Everlast construction - beware!!) The problems with our HVAC system were many. It wasn't installed to code, and was even set up in a way where if it was left as is, electrical fires and/or the previous hvac shorting out due to being wired so incorrectly. The guys at Jazz were able to take an incorrectly installed system, cut out my old one unit and safely remove it, then install a new hvac with all the corrections to every line. What we have now is an efficient heater that works - and isn't a fire hazard. Imagine that! This isn't even the nicest thing they did for us. Turns out, the ghost of my crooked contractor was still haunting us. We could not pass inspection without a hers test, yet the person hired previously to complete it, disappeared off the map. Jazz got a new one going, and spent several weeks tracking down all the people and paperwork needed to do one from scratch. Needless to say, it was unprecedented for them, no picnic, and they did it happily. Never wavered, never hesitated and always called back and kept us updated. I would recommend them to my mother. These guys will do a good job. They have a kind vibe and I have no reservations in giving them five stars and propping them up. Would hire them again. Thank you jazz! Edit: these guys have come By three separate times to fix more issues left by the previous inept criminally minded people at "Everlast construction." All three times, no charge, super sweet attitude and just supremely helpful. Hire these guys."
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+3

Recommended by100%of homeowners
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Install Boiler questions, answered by experts

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

Some high-quality steam boilers come with 10-year warranties, but a well-installed, properly maintained model can last at least 20 to 25 years. Learning how to clean a boiler, getting an annual professional service, and keeping up with maintenance and repairs on your heating system are all important for getting the most out of your model. 

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.

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.

Costs depend on system size, efficiency rating, and additional features like zoning or smart controls.

The Sunol, CA homeowners’ guide to boiler installation services

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