3 Essential Services.

1 Winning Price.

Water Heater Flush

HVAC System Tune Up

Water Quality Test

Our Offers

1 Year FREE Annual Maintenance

With new water heater install

*Bronze maintenance plan. Restrictions apply.

0% APR for up to 18 months

or as low as $67.75 per month

*With approved credit. Restrictions Apply

FREE 10 year warranty new water heater install

A $250 value!

*Cannot be combined with other offers. Restrictions apply

      
 Excellent4.9602 reviews
 4.9
 Excellent602 reviews
  Write a review 
 
 
 
   
 
 
      Posted on Google  
   
   Frank Mutascio 
 8 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Anthony was great … he explained what need to be done even with our four year old  twin grand daughters running around screaming
  
 
     Posted on Google  
   
   Daniel Arellano 
 7 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Communicative, transparent, quick. Needed a new water heater and our service was smooth sailings. Miguel Angel took the time to explain everything, the options were clear, and no hidden fees or surprise costs.
  
 
     Posted on Google  
   
   Laura Bushwack 
 6 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Installation was done in a timely and professional manner.
  
 
     Posted on Google  
   
   shadi khodavandloo 
 6 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. The work Justin did was great and efficient but the water heater was overpriced.
  
 
     Posted on Google  
   
   Wendall Brock 
 5 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Eric was very thorough and he is in excellent employee thank you very much he knows his job well
  
 
     Posted on Google  
   
   Mark Michelson 
 4 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Miguel was very polite, professional, and thorough.  It was a pleasure to do business with him and your organization.
  
 
     Posted on Google  
   
   Joseph Casella 
 2 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Nam was great. He worked hard to get everything right. He was very thorough and also very easy to work with.
  
 
     Posted on Google  
   
   Tracy Purcell 
 1 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Super friendly, fast and efficient service. Had visit on the same day I called. Would highly recommend.
  
 
     Posted on Google  
   
   April Farris 
 1 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Luis came out and was very professional.  The appointment was scheduled in a very timely manner and the problem was taken care of in the same day with a new installation of a new water heater due to the old one wearing out and leaking.
  
 
     Posted on Google  
   
   Patricia 
 30 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great job!  On time, personable, knew what he was doing, Fast and will have hot water to clean dinner dishes Thank you!!!

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

(925) 267-8531

Water Heater Services from Trusted Experts

Traditional & Tankless Hot Water Heater Solutions

The worst way to start your day is waking up and stepping into an ice-cold shower. If you are dealing with a broken hot water system, the water heater pros at CastleWorks have the solution you are looking for. We have a team of certified and experienced hot water system experts who can resolve all of your heating or water-tank related issues within a quick time frame. As water heater specialists, we work almost exclusively on these systems. This allows us to bring a greater level of care and precision to our profession than the average plumber.

Why CastleWorks is becoming one of the most popular water heater companies in the East Bay:

Our seasoned team members have 7-10 years of experience.
We are open for water heater repair 7 days a week.
We can install a brand new unit in just 3 hours.
We offer 4 different install packages to suit your specific needs.
Certified installers of Noritz Tankless Systems and HALO Water Filters.

Our water heater repair team understands that you may have many questions about your system if it’s not working properly. We will walk you through the benefits of installing a new unit if your tank is leaking, but you can trust us not to oversell you on equipment that you don’t truly need.

We Offer Financing For Any Budget

Our financing options will give you peace of mind while ensuring your home is running on the best equipment on the market.

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

Learn More

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: