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TRUSTED BY DISCOVERY BAY, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.2k+
    Verified boiler repairs reviews

Find Boiler repair pros in Discovery Bay

Avatar for Water Heaters Masters

Water Heaters Masters

4.89(
105
)
Approved Pro

Water Heaters Masters

4.89(
105
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
64 local quotes requested

We are a small family owned business and our reputation is built one satisfied customer at a time. In a time where finding honest and well trained experts in the plumbing industry is difficult, we pride ourselves in serving you better. We know you have choices and will make every effort to demonstrate that we are the best option for your water heater, tankless water heater, and high efficiency water heater needs. We offer competitive pricing, the best products, and most important great customer service. We also want to do work for your friends and family, so the best endorsement for us is a job well done and a happy customer. We do standard water heater repairs and replacement but also bigger projects like relocation jobs and tankless water heater installations to name a few. Our technicians are highly experienced and have installed thousands of water heaters. Call or text us at 925-817-8342 for a free estimate. We serve residential or commercial customers, including apartments and condos.

"Quite excellent with relatively affordable compare to other provider ( although still expensive ). I would recommend. Excellent service."

Bill Y on December 2024

We are a small family owned business and our reputation is built one satisfied customer at a time. In a time where finding honest and well trained experts in the plumbing industry is difficult, we pride ourselves in serving you better. We know you have choices and will make every effort to demonstrate that we are the best option for your water heater, tankless water heater, and high efficiency water heater needs. We offer competitive pricing, the best products, and most important great customer service. We also want to do work for your friends and family, so the best endorsement for us is a job well done and a happy customer. We do standard water heater repairs and replacement but also bigger projects like relocation jobs and tankless water heater installations to name a few. Our technicians are highly experienced and have installed thousands of water heaters. Call or text us at 925-817-8342 for a free estimate. We serve residential or commercial customers, including apartments and condos.

"Quite excellent with relatively affordable compare to other provider ( although still expensive ). I would recommend. Excellent service."

Bill Y on December 2024


Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

4.66(
387
)
Approved Pro

Bell Brothers Plumbing Heating & Air

4.66(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
50 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.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023

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.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023


Avatar for Albert Nahman Plumbing, Heating, and Cooling

Albert Nahman Plumbing, Heating, and Cooling

4.45(
686
)
Approved Pro

Albert Nahman Plumbing, Heating, and Cooling

4.45(
686
)
Approved Pro
Customers say: Super punctual
696 local quotes requested
44 years of experience

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"10/6/2024 - Ongoing Toilet Leak Issue – Unresolved Since February Dear Albert Nahman Plumbing, I hope this message finds you well. I am writing to express my extreme frustration regarding the ongoing toilet leak issue that has yet to be resolved, despite numerous attempts to rectify it. The problem began in February 2024, when my toilet started leaking and refilling its tank every 2 to 4 hours. Since March 18, 2024, I have had five appointments with your team to address this issue. I have paid a total of $545 for a new canister flush valve and a new toilet fill valve, yet the toilet continues to leak exactly the same way it did before. What is particularly disheartening is the lack of communication since August. I have repeatedly tried to reach out via email and phone, but my messages have gone unanswered (August to October). I chose your company based on your good ratings and the assumption that I would receive quality service from a licensed plumber. Unfortunately, my experience has been quite the opposite. I would appreciate a prompt response to this matter and a clear plan for how we can finally resolve the leak. Thank you for your attention to this urgent issue. Sincerely, Andreas"

Andreas Z on October 2024

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"10/6/2024 - Ongoing Toilet Leak Issue – Unresolved Since February Dear Albert Nahman Plumbing, I hope this message finds you well. I am writing to express my extreme frustration regarding the ongoing toilet leak issue that has yet to be resolved, despite numerous attempts to rectify it. The problem began in February 2024, when my toilet started leaking and refilling its tank every 2 to 4 hours. Since March 18, 2024, I have had five appointments with your team to address this issue. I have paid a total of $545 for a new canister flush valve and a new toilet fill valve, yet the toilet continues to leak exactly the same way it did before. What is particularly disheartening is the lack of communication since August. I have repeatedly tried to reach out via email and phone, but my messages have gone unanswered (August to October). I chose your company based on your good ratings and the assumption that I would receive quality service from a licensed plumber. Unfortunately, my experience has been quite the opposite. I would appreciate a prompt response to this matter and a clear plan for how we can finally resolve the leak. Thank you for your attention to this urgent issue. Sincerely, Andreas"

Andreas Z on October 2024


Avatar for SJH Plumbing Service LLC - Unlicensed Contractor

SJH Plumbing Service LLC - Unlicensed Contractor

5.00(
3
)
Approved Pro

SJH Plumbing Service LLC - Unlicensed Contractor

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

Welcome to SJH Plumbing Service LLC ! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Sayed and SJH Plumbing did a fantastic job installing my faucet. Professional, efficient, and great service overall. Highly recommended!"

Sourish B on March 2024

Welcome to SJH Plumbing Service LLC ! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Sayed and SJH Plumbing did a fantastic job installing my faucet. Professional, efficient, and great service overall. Highly recommended!"

Sourish B on March 2024


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


Avatar for Lester's Plumbing and Rooter - Unlicensed Contractor

Lester's Plumbing and Rooter - Unlicensed Contractor

4.92(
6
)
Approved Pro

Lester's Plumbing and Rooter - Unlicensed Contractor

4.92(
6
)
Approved Pro
Customers say: Quick response
17 local quotes requested
3 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"He is very respectful, very serious, it is important in these days. Really good job."

Theresa H on February 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"He is very respectful, very serious, it is important in these days. Really good job."

Theresa H on February 2025


First Class Water Heaters, Inc.

4.74(
130
)
Approved Pro

First Class Water Heaters, Inc.

4.74(
130
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
28 years of experience

We are dedicated to providing our clients with the very best in service, installation and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long term relationships with our clients and guarantee your satisfaction.

"They did a good job."

Oskar W on June 2021

We are dedicated to providing our clients with the very best in service, installation and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long term relationships with our clients and guarantee your satisfaction.

"They did a good job."

Oskar W on June 2021


Avatar for Ynot Heating and Air

Ynot Heating and Air

5.00(
1
)
Approved Pro

Ynot Heating and Air

5.00(
1
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

Why not hire the best, Ynot Heating and Air with over 5 years of experience serving the Antioch area, Ynot Heating and Air is the solution for all your HVAC needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed!

"To coin Liberty Mutual's line, You only get what you need."

George M on May 2020

Why not hire the best, Ynot Heating and Air with over 5 years of experience serving the Antioch area, Ynot Heating and Air is the solution for all your HVAC needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed!

"To coin Liberty Mutual's line, You only get what you need."

George M on May 2020


Avatar for Attic Pros

Attic Pros

4.91(
195
)
Approved Pro

Attic Pros

4.91(
195
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
67 local quotes requested

Attic Pros provides outstanding products combined with superior service to ensure your satisfaction. Our team work's directly with you making sure we cover all areas that may have insulation issues. Once we've done this we can make a custom plan for property. Call Attic Pro Today for your professional consultation. *******5% Off Mold Removal Project******* For a limited time, we're excited to offer you a special discount of 5% off your mold removal project. Don't miss out on this opportunity to ensure a healthier environment for your home or business while saving money. Contact us today to schedule your mold inspection and take advantage of this exclusive offer!

"Hired to blow new insulation into the attic. Reasonable pricing, professional people who showed up on time and kept the work area clean. Would recommend."

Joyce S on August 2025

Attic Pros provides outstanding products combined with superior service to ensure your satisfaction. Our team work's directly with you making sure we cover all areas that may have insulation issues. Once we've done this we can make a custom plan for property. Call Attic Pro Today for your professional consultation. *******5% Off Mold Removal Project******* For a limited time, we're excited to offer you a special discount of 5% off your mold removal project. Don't miss out on this opportunity to ensure a healthier environment for your home or business while saving money. Contact us today to schedule your mold inspection and take advantage of this exclusive offer!

"Hired to blow new insulation into the attic. Reasonable pricing, professional people who showed up on time and kept the work area clean. Would recommend."

Joyce S on August 2025

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Boiler Repair questions, answered by experts

Boiler leaks are the most common problem that impacts this fixture. Some leaks stem from corroded pipes and tanks, while others are due to damaged seals or excessive pressure. No matter how you slice it, boiler leaks are bad news. This issue leads to water damage in the home and malfunctioning electrical components in and around the boiler.

While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.

Signs of needing a new expansion tank include visible leaks and a dull sound when you knock your knuckles against the tank (working tanks should sound hollow). A malfunctioning tank may also sweat with condensation, cause pipes to create loud noises when the system is turned off, and lead to very high-pressure readings on the boiler’s gauges. When in doubt, call for a professional inspection to find the source of the problem.

In many cases, yes, you can fix a radiator without replacing it, and it’s usually more affordable to do so. Radiators are relatively simple fixtures that shouldn’t run into many issues, but when you do have a radiator problem, the solutions typically require minimal materials and just an hour or so of labor. The only issue that demands a full radiator replacement is if the unit itself is cracked. This typically occurs only with aging systems.

It's possible that your oven's gas ignitor will wear out before the rest of the appliance. An ignitor may last about eight years before it needs replacing. In some cases, cleaning the ignitor to remove any built-up food and debris may help to prolong its life. Replacing the ignitor in a gas oven costs an average of $200.

The Discovery Bay, CA homeowners’ guide to boiler repairs

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