Tankless Water Heater Installation

No Hot Water? No Problem.

     EXCELLENT  
  1737 reviews

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

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Tankless Water Heater Installation in California

Efficient Gas & Electric Water Heater Upgrades

Looking to upgrade your home with a reliable tankless water heater? CastleWorks Water Heaters installs high-efficiency gas and electric units that deliver endless hot water on demand while saving energy and space. Our expert plumbers are here to guide you through every step of the process—from choosing the right system to final installation.

What Affects the Cost of a Tankless Water Heater Installation?

Several key factors can impact how much your tankless system will cost. Here’s what you need to consider:

Traditional vs. Tankless Water Heaters – Traditional tank water heaters store heated water continuously, while tankless systems only heat water when needed. That means more efficiency, lower energy bills, and no bulky tanks taking up valuable space.
Gas vs. Electric Models – Your home’s fuel source plays a big role. Electric tankless units are often simpler to install and cost less upfront, while gas models may offer higher performance depending on your home’s setup and energy prices.
Size & Flow Rate Needs – Tankless units are sized by gallons per minute (GPM). Homes with higher hot water demand may need a larger system—CastleWorks can evaluate your usage and recommend the right size for long-term efficiency and savings.

Why Choose CastleWorks for Tankless Water Heater Installation?

Upgrading your water heater is an investment. CastleWorks makes sure it pays off. When you work with us, you’ll get:

Personalized Installation Consultations – We take the time to understand your household’s needs and tailor the right-sized system—no guesswork.
Licensed, Experienced Installers – Our fully licensed plumbers bring years of tankless expertise to every install.
Upfront Estimates, No Surprises – We walk you through your options and pricing clearly, so you know what to expect.
Flexible Scheduling – We work around your calendar to get your hot water up and running fast.

You should also consider scheduling annual maintenance for your new tankless system to protect your investment and avoid future repairs.

Ready to Go Tankless?

Enjoy endless hot water, lower energy bills, and a more efficient home. CastleWorks will help you choose the perfect tankless model, install it with precision, and back it with expert support. Call now or fill out the contact form below to schedule your tankless water heater installation!

      
 Excellent4.71737 reviews
 4.7
 Excellent1737 reviews
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   James Houng 
 7 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Chris B. Is the tech - he is professional and quick - clean and clear all parts and answer all questions - thank you!
  
 
     Posted on Google  
   
   Danielle Stahler 
 23 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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
  
 
     Posted on Google  
   
   alice engelmann 
 22 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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
  
 
     Posted on Google  
   
   Bill Loper 
 20 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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!
  
 
     Posted on Google  
   
   Steve Ansay 
 18 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Very good . On time as promised.
  
 
     Posted on Google  
   
   Todd Cetti 
 17 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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!
  
 
     Posted on Google  
   
   Timothy Fives 
 13 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
     Posted on Google  
   
   Ferdinand Galvez 
 10 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. 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!!
  
 
     Posted on Google  
   
   Girard Miller 
 9 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. We needed to replace our large 100 gal water heater (4.5 Ba house) and called Castleeworks when some slight leakage was visible in the drain pan.  Great same-day service by Salvador Vidales, who provided the price estimate, consulted with us on options, and got us an additional discount because we were replacing with the exact same brand that they usually install, so no new major piping was rquired other than the usual new connectors. Waived the delivery fee for the new unit which was in Pomona several hours away on high traffic congestion day.. Salvador was also the installer, very capable and workmanlike.  Had the whole worksite set up and old unit ready for removal when the delivery/installation guys arrived on the hottest day of the year. When the new alumuinum drain pan got dented in the installation on our raised pad which didn't look good, he pro-actively had the team pull the new unit back off and installed another replacement drain pan to make sure we were happy with the results.  After the delivery guys left when the unit was in place, he worked for several more hours finishing at 7 pm.  Showed good workmanship, gave us good advice.  We were very happy with Salvador and the company so far at this point.  Obviously the proof of the pudding will be in the new unit and our service contracts and warranties, but we're off to a very good start and would highly recommend based on this experience on Day One!
  
 
     Posted on Google  
   
   Koosha Mortazavi 
 5 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Justin was great very professional and explained in details. Their service is great but the company is pricey.

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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: