Water Heaters

No Hot Water? No Problem.

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No Hot Water? No Problem. Call the Water Heater Professionals at Castleworks Today!

Dublin Water Heater Repairs

Free In-Home Estimates for Hot Water Heater Services

From traditional tank water heaters to the latest tankless models, our team has the expertise to get your hot water system back in top condition. At CastleWorks, we provide timely assistance with hot water heater repairs for residents across Dublin. With three decades of experience serving the area, we have established a reputation for good pricing, friendly service, and responsiveness throughout the process. If you want the benefits of working with industry experts, you’ve come to the right place.

Why Choose CastleWorks for Your Hot Water Heater Repair?

Our commitment to delivering excellence to every customer we serve is one reason why our company has become popular in the local area.

We’ve added a few more reasons below.

  • CastleWorks has been providing professional water heater repairs for 30 years
  • We service over 2,500 customers every year 
  • We provide free in-home estimates
  •  Our water repair technicians have an average of 5+ years of experience 

We strive for excellence with every customer we work with. This means we will aim to have all your questions answered and all your concerns addressed before the job is wrapped up.

Serving the Communities Across The East Bay

We provide water heater solutions to homeowners, property managers, and businesses across Northern California. We’ve listed out a few cities in our territory below.

  • Dublin
  • Hayward 
  • Livermore
  • Pleasanton 
  • San Ramon 
  • Castro Valley
  • Union City
  • San Leandro
ExcellentGoogle star 1Google star 2Google star 3Google star 4Google star 54.9656 reviews
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Excellent656 reviews
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Andrew Lamson profile picture
Andrew Lamson
11 November 2026
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Nam Park was an excellent technician. He was patient and thorough. He was very careful with the house and wore protective booties until he put down blankets. He updated me regularly and worked expediently. Would highly recommend.
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Allan De Guzman profile picture
Allan De Guzman
10 November 2026
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CHRISTOPHER DOHRER is the best technician.he do amazing jobs👏🏻👏🏻
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Jerry Hubner profile picture
Jerry Hubner
10 November 2026
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Castle works responded with a technician on site within 2 hrs. Chris was professional and efficient in his presentation of the products available to us. We are very happy that the installation only took 2 hrs and that the completed project was left clean and looking great. Thank you Chris
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Danielle Benz profile picture
Danielle Benz
9 November 2026
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Miguel was the technician that arrived within a few hours of my call to check on my water heater. He quickly assessed the situation and provided me options. I decided to go with a new water heater and he had it installed in just a couple hours. I was able to give my toddler a warm bath before bedtime!
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william biagi profile picture
william biagi
9 November 2026
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On Sunday November 8 our water heater broke down and also had a bursted pipe. We called CastleWorks Water Heaters and they made sure we turned everything off properly and set up the water drain system correctly. Within 90 minutes a technician named Erik Vargas arrived, and let me tell You -- this Guy was fantastic! Erik went through all of our options and explained everything perfectly and then went to work installing our new Water Heater. After the technician Erik left our garage looking better than it ever has. CastleWorks gets a rating of💯👍🧑‍🔧 from us. W.P. Biagi
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Patricia Stockton profile picture
Patricia Stockton
7 November 2026
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Christopher was a very knowledgeable technician. He explained everything he did and why he was doing it. He was also very nice and friendly. I would recommend him to anyone.
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Richard Hartnett
6 November 2026
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Miguel did a great job! Very pleasant to talk to and very efficient. Also very knowledgeable about water heaters and installation.
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jeff carey
6 November 2026
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Jacob was our service technician. He was very professional and resolved the problem we had with our hot water heater.
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Jessie Lopez
6 November 2026
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Very friendly and knowledgeable
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Tom Thomas profile picture
Tom Thomas
2 November 2026
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Came out same day to inspect then replace my 8 yr old water heater. Knowledgeable technician Chris got to work after showing us the options.

Common Signs That Repair Is Needed

The most obvious sign of a problem is cold water coming out of your faucet or showerhead. But there are other things to watch out for that may indicate a need for repairs. We’ve outlined some of them below.

  • Rusty or Discolored Water: This can be a sign of a few different things. It may mean that you have sediment buildup at the bottom of your tank or that the anode rod is failing. It may also mean that your tank walls have started to rust.
  • You Hear Noises Coming from Your Unit: Sometimes, sediment buildup can cause popping sounds as bubbles form underneath and rise to the surface. Whistling sounds often relate to a valve problem.
  • You See Water Pooling: This can happen if there’s a problem with the pressure relief valve or the drain at the bottom. But it may also indicate a crack in your tank, which would mean it’s time to replace the unit.
  • The Pilot Light Won’t Stay On: This can be caused by problems with the thermocouple, which may be damaged or have too obstructing it. You may also have a problem with the control valve failing to deliver gas correctly

Repairs for All Kinds of Water Heating Systems

Nowadays, homes can be outfitted with a variety of different kinds of heaters. Some run on gas. Some are electric. There are tankless and tank options. Our team has familiarity and experience working with all these systems.

We service every type of water heating system:

  • Gas Water Heaters
  • Electric Water Heaters
  • Tankless Water Heaters
  • Heat Pump Water Heaters


To prevent future problems from occurring, we usually recommend investing in a regular maintenance plan where one of our hot water heating pros will care for your system on an ongoing basis. Free testing and discounts on repairs are included.

No Hot Water? No Problem. Call the Water Heater Professionals at CastleWorks Today!

We Offer Financing For Any Budget

Comfort, Efficiency & Savings. You can have it all!

Contact Us Today!

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The CastleWorks story began in 1995 and grew from the collaboration of many dedicated local professionals committed to service. Our family of businesses includes:

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