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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified boiler repairs reviews

Verified Reviews for Boiler Repair pros in Knightsen, CA

*The Angi rating for Boiler Repair companies in Knightsen, 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 Knightsen, 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 December 02, 2025

Find Boiler repair pros in Knightsen

Avatar for RG Construction

RG Construction

5.00(
4
)
•Approved Pro

RG Construction

5.00(
4
)
•Approved Pro
Free onsite estimate
Emergency services offered

We have been in the construction industry for over 10 years. From building ADUs, high-end kitchen remodels, bathroom remodels and home extensions, we have done just about everything under general construction. Our company prioritizes safety, quality and transparency.

"Me and my wife decided recently to get our kitchen remolded. After some time searching for the right guys to do the job we settled on RG Construction. Richard, who is the owner, is a great guy and super informative. He never left any question unanswered or left us uncertain about anything. His crew works quick, and they pay attention to the tiniest detail. They absolutely are worth every dollar and I would recommend RG Construction to any homeowner, and I for sure will be giving them a call back for any work I need done in the future. Me and my wife are absolutely in love with our remodel."

Jesse O on November 2025

We have been in the construction industry for over 10 years. From building ADUs, high-end kitchen remodels, bathroom remodels and home extensions, we have done just about everything under general construction. Our company prioritizes safety, quality and transparency.

"Me and my wife decided recently to get our kitchen remolded. After some time searching for the right guys to do the job we settled on RG Construction. Richard, who is the owner, is a great guy and super informative. He never left any question unanswered or left us uncertain about anything. His crew works quick, and they pay attention to the tiniest detail. They absolutely are worth every dollar and I would recommend RG Construction to any homeowner, and I for sure will be giving them a call back for any work I need done in the future. Me and my wife are absolutely in love with our remodel."

Jesse O on November 2025

Avatar for Thermotech Solutions, Inc.

Thermotech Solutions, Inc.

5.00(
2
)
•Approved Pro

Thermotech Solutions, Inc.

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"I called ThermoTech Solutions and they sent out a technician within 24 hours. I was pleasantly surprised that the technician was the same gentleman I talked to over the phone so I did not have to retell what was wrong with my system. Jason my technician who is also the owner was great. He tested my system, knew exactly what was needed, and had it repaired the very same day. He did not try to sell me on upgrading my unit or a bunch of repairs I did not need. The service was fast, very reasonably priced, and I have had no issues since. Will definitely be having ThermoTech Solutions come out for all my HVAC needs in the future!"

David D on December 2023

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"I called ThermoTech Solutions and they sent out a technician within 24 hours. I was pleasantly surprised that the technician was the same gentleman I talked to over the phone so I did not have to retell what was wrong with my system. Jason my technician who is also the owner was great. He tested my system, knew exactly what was needed, and had it repaired the very same day. He did not try to sell me on upgrading my unit or a bunch of repairs I did not need. The service was fast, very reasonably priced, and I have had no issues since. Will definitely be having ThermoTech Solutions come out for all my HVAC needs in the future!"

David D on December 2023

Avatar for Eastbay Rooter - Unlicensed Contractor

Eastbay Rooter - Unlicensed Contractor

New on AngiNew on Angi
•Approved Pro

Eastbay Rooter - Unlicensed Contractor

New on AngiNew on Angi
•Approved Pro
4 years of experience
Free onsite estimate

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion we work with you until the job is done. We thrive to take care of all of our clients unique needs. We are ethical, honest and easy to communicate with. Call us today you'll be pleased you did. Thank you

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion we work with you until the job is done. We thrive to take care of all of our clients unique needs. We are ethical, honest and easy to communicate with. Call us today you'll be pleased you did. Thank you

Pedro Galvan Plumbing, Inc.

4.85(
17
)
•Approved Pro

Pedro Galvan Plumbing, Inc.

4.85(
17
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
21 years of experience

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

Nicola S on July 2025

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

Nicola S on July 2025

Avatar for Bay Area Comfort Solutions HVAC

Bay Area Comfort Solutions HVAC

5.00(
3
)
•Approved Pro

Bay Area Comfort Solutions HVAC

5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

When you need air conditioning service that won't leave you chilled or unduly sweaty, you want a company with extensive experience. You need a company with the ability to handle all your needs, from sales and service to installation. You demand a company that stands behind all its work. For these reasons, and for many others, you should turn to (Company). We have more than( ) years of experience and we're members of the Better Business Bureau, so you can trust all your air conditioning projects to our capable hands. Naturally, we are licensed and insured, call us today for your next heating or air conditioning issue.

"Bay area comfort solutions did an amazing job analyzing and repairing my furnace. The technicians were very proficient and knowledgeable. Mike who did the repair was prompt professional and efficient the company exceeded all my expectations I highly recommend them."

Trenton J on December 2023

When you need air conditioning service that won't leave you chilled or unduly sweaty, you want a company with extensive experience. You need a company with the ability to handle all your needs, from sales and service to installation. You demand a company that stands behind all its work. For these reasons, and for many others, you should turn to (Company). We have more than( ) years of experience and we're members of the Better Business Bureau, so you can trust all your air conditioning projects to our capable hands. Naturally, we are licensed and insured, call us today for your next heating or air conditioning issue.

"Bay area comfort solutions did an amazing job analyzing and repairing my furnace. The technicians were very proficient and knowledgeable. Mike who did the repair was prompt professional and efficient the company exceeded all my expectations I highly recommend them."

Trenton J on December 2023

Next Generation Plumbing, LLC

New on AngiNew on Angi
•Approved Pro

Next Generation Plumbing, LLC

New on AngiNew on Angi
•Approved Pro
6 years of experience
Free onsite estimate

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

4.79(
357
)
•Approved Pro

Bell Brothers Plumbing Heating & Air

4.79(
357
)
•Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
55 local quotes requested

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022

Avatar for Accurate Home Remodeling

Accurate Home Remodeling

5.00(
1
)
•Approved Pro

Accurate Home Remodeling

5.00(
1
)
•Approved Pro
68 local quotes requested

Accurate Home Remodeling services the San Francisco Bay Area. Driven by years of accumulated experience, we’re a fully licensed, bonded, and insured company offering full construction services ranging from kitchen & bathroom remodeling, exteriors, home additions, and much more. Your assigned estimating designer will sit down with you during the complimentary consultation to help you establish an optimal layout and overall vision for the project at hand. Following the consultation, we can create 3D renders to allow you to preview your newly renovated space. Our approach is to work side by side with you to select material at the best locations around the bay area to make your concepts become a reality. Call or 'click' for a FREE estimate today!

Accurate Home Remodeling services the San Francisco Bay Area. Driven by years of accumulated experience, we’re a fully licensed, bonded, and insured company offering full construction services ranging from kitchen & bathroom remodeling, exteriors, home additions, and much more. Your assigned estimating designer will sit down with you during the complimentary consultation to help you establish an optimal layout and overall vision for the project at hand. Following the consultation, we can create 3D renders to allow you to preview your newly renovated space. Our approach is to work side by side with you to select material at the best locations around the bay area to make your concepts become a reality. Call or 'click' for a FREE estimate today!

Jim's Air Systems

4.33(
9
)
•Approved Pro

Jim's Air Systems

4.33(
9
)
•Approved Pro
140 local quotes requested
47 years of experience

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 50 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

Jen D on November 2024

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 50 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

Jen D on November 2024

Avatar for Oakley Heating and Air

Oakley Heating and Air

5.00(
8
)
•Approved Pro

Oakley Heating and Air

5.00(
8
)
•Approved Pro
Super Service Award
38 local quotes requested
1 years of experience

Oakley Heating and Air, LLC provides exceptional service to the surrounding areas. Always taking pride in all of our services, striving to execute with excellence, and putting our customers in the forefront, is our philosophy. Whatever your Heating and Air needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you

"Oakley heating and Air has been our go to for some time now. Terry is awesome and reliable. Hard to find now a days. Haven’t had an issue that he can’t solve. I Will continue to support and recommend him to all my friends. "

Ricardo C on July 2025

Oakley Heating and Air, LLC provides exceptional service to the surrounding areas. Always taking pride in all of our services, striving to execute with excellence, and putting our customers in the forefront, is our philosophy. Whatever your Heating and Air needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you

"Oakley heating and Air has been our go to for some time now. Terry is awesome and reliable. Hard to find now a days. Haven’t had an issue that he can’t solve. I Will continue to support and recommend him to all my friends. "

Ricardo C on July 2025

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Boiler Repair questions, answered by experts

It’s not customary to tip HVAC technicians, and most professionals won’t expect it. However, it’s a nice way of showing your appreciation for the work they do, especially if they come out in inclement weather or on a weekend or holiday to fix an emergency issue if your heat or AC goes out in extreme temperatures. A good tip would be between 10% to 20% of the total bill, depending on how above and beyond the tech goes for your repair and on the total cost of your HVAC repair or service. For something like a routine tune-up or scheduled maintenance, tips aren’t expected.

To maintain a boiler and ensure it works optimally, regularly read the temperature and pressure gauges on the unit to ensure they're within the limits described in your owner's manual. Lubricate the circulating pump according to the manufacturer's instructions. Check the water level in the expansion tank and open the tank valve to drain it if it's more than half full.

Yes, cleaning a boiler is essential for its efficient and safe operation. Over time, boilers can accumulate dirt, rust, sediment, and mineral deposits, reducing efficiency, increasing energy consumption, and causing potential breakdowns. Cleaning involves removing these deposits from various components like heat exchangers, burners, and pipes. Neglecting cleaning can also lead to corrosion and decreased life span. Regular, yearly maintenance, including cleaning, ensures optimal performance, lower energy bills, and a safer heating system. It's best to consult the boiler's manual or hire a professional technician for cleaning to ensure the job is done right.

Attempting DIY fixes can be dangerous. Regular boiler maintenance can help prevent overheating, so schedule professional servicing as a preventive measure. In an emergency, telling occupants to leave the house is a good idea. Then, you can turn off the boiler and the gas or fuel supply. Let it cool naturally, and check the thermostat's settings. Ensure there are no obstructions around the boiler for proper ventilation. Monitor the pressure gauge; if it's too high, bleed the radiators if necessary. During this time, bringing in professionals for troubleshooting is also smart.

If you hear your radiator clanking even when it’s turned off, it’s typically because there’s trapped water or air in the system, causing a pressure buildup. When you hear significant clanking, popping, crackling, or banging in a radiator that’s turned off, you’ll want to bleed the pipes or call in an HVAC specialist to deal with the problem (and prevent it from happening in the future).

The Knightsen, 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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