Tankless Water Heater Repair

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

Tankless Water Heater Repair in Orange County

Certified Plumbers Who Fix Electric & Gas Tankless Water Heaters

If you are noticing fluctuating water temperatures in your water heater or a lack of hot water, you need to have your tankless water heater inspected by a skilled Orange County plumber. Our experts at CastleWorks specialize in water heater repair for both traditional tank models and tankless models.

The most common problem we encounter when showing up for a tankless water heater repair call is mineral buildup.

How to Avoid Sediment Buildup In Your Tankless Water Heater Unit

If you have hard water issues in your home, a water softener is your first line of defense. You should also be replacing your water line filter attached to your unit at least yearly to keep sediment out. One of our plumbing professionals can help you with that if needed. One last method that may be needed (depending on the state of your existing water heater) would be a flush the whole system and descale it in the process. But unlike conventional units, which need a flush every 6-12 months, a tankless water heater does not need to be done very often in most cases.

No one likes an expensive repair bill or to be left without hot water. Adequate maintenance may help you avoid unnecessary service calls. We recommend scheduling regular tune-ups for your tankless water heater. As a result, you will catch small problems early on and avoid larger plumbing emergencies. Additionally, you may reduce sediment buildup which will inhibit your water heater’s performance. Don’t hesitate to call CastleWorks with any maintenance concerns for more information.

More Problems We Enounter When Repairing Tankless Heaters in Orange County

Some of the symptoms listed out below are things we commonly encounter when a tankless heater needs to be repaired.

  • Lack of Hot Water
  • Fluctuation of Hot to Cold and Back to Hot (Cold Water Sandwich)
  • Poor Water Pressure
  • Scalding Water
  • Insufficient Hot Water
  • Loose Water Line Connections
  • Sizing Issues

If your tankless water heater is serviced by a seasoned professional yearly, you may avoid these issues and keep your system running at its ideal performance.

Why People Prefer Tankless Heaters Over Conventional Water Heaters

First off, tankless water heaters take up a lot less space—up to three feet less in diameter—than their bulkier traditional counterparts. If you’re tight in your hot water closet at home, picture getting up to 9 square feet of extra space. Feels good, doesn’t it? Then, there’s the fact that tankless water heaters also require less upkeep, and they need to be repaired less often—though when you do need tankless water heater repaired, we’re just a call away.

They’re also pretty cost-effective, since they waste less energy heating up a tank of water. And speaking of energy, gas tankless water heaters have been estimated to save the average family about $100/year on its electric bill. Makes sense to us!

Call CastleWorks in Orange County for Tankless Heater Repair Today

When you call on our Orange County tankless water heater repair experts, you can trust that we will provide you with the highest quality solutions. We are known for our quick response times and excellent customer service, and we will work tirelessly to get your tankless water heater back up and running in no time.

Call us today at (714) 253-7078.

ExcellentGoogle star 1Google star 2Google star 3Google star 4Google star 54.71738 reviews
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Excellent1738 reviews
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Ed Brown
14 October 2026
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Quick and courteous response, plus my 10 year old service records from a company Castleworks acquired! Salvador, the technician, was personable, worked quickly, explained paperwork, options, and maintenance recommendations, and left no waste.
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Vanja Srdic
8 October 2026
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We had an emergency water leak. Company responded quickly by sending one of their plumbers/technicians in an hour - Salvador Vidales was great, very knowledgeable, extremely professional and honest, I would strongly recommend his service. Thank you!
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James Houng profile picture
James Houng
7 October 2026
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Chris B. Is the tech - he is professional and quick - clean and clear all parts and answer all questions - thank you!
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Danielle Stahler
23 September 2026
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This is our second huge projects with Castleworks. Justin went above & beyond, not only making what could have been a huge issue. He figured out the best way to do do with a very minimal amount of holes in walls. He did the work quickly & despite the very small holes needed to connect the pipes, he made it all look like a work of art. I highly recommend recommend the company for any plumbing needs & a special shout out to Justin
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alice engelmann
22 September 2026
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Excellent technician, clean, professional and focused. He provided customer education when all was done and answered all pre- work questions as well. Represented your company well. In
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Bill Loper
20 September 2026
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I would rate my experience with Christopher Beauvoir's installation of a new water heater as a "5". He was extremely professional and straight-forward about the entire process. Explained teh issues with my old water heater, and installed the new one quickly and efficiently. I would not hesitate to recommend Castle Works to my associates if and when they need that kind of service. thanks again for solving my hot water issues!
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Steve Ansay
18 September 2026
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Very good . On time as promised.
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Todd Cetti
17 September 2026
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CastleWorks does excellent work. Christopher Beauvoir showed up on time, was very knowledgeable, and did an excellent job replacing our old water heater in the garage. They use Bradford White water heaters which are really good. Very happy with the job, thank you!
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Timothy Fives
13 September 2026
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CastleWorks’ technician, Christopher Beauvoir, showed up on time and quickly diagnosed the problem with the Grundfos circulation pump on our tankless water heater. He also discovered several faulty valves that had deteriorated over the years. Christopher replaced the failing pump and valves and was on his way in short order.
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Ferdinand Galvez
10 September 2026
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Chris was very professional and kind. Hes very educated when it comes to his like of work! You should definitely do business with Chris Beauvoir!! 5/5 Stars easy!!

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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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