Tankless Water Heater Installation

No Hot Water? No Problem.

     EXCELLENT  
  1728 reviews

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

(714) 253-7078

Book Now!

Tankless Water Heater Installation in Orange County

Energy-Efficient, Space-Saving Hot Water Solutions

When it’s time to replace your hot water system, upgrading to a tankless water heater is one of the most energy-efficient decisions you can make. These systems provide hot water on demand, use less space, and can significantly reduce your monthly utility bills—making them ideal for homeowners throughout Orange County. Whether you’re looking for a tankless upgrade or a traditional system, CastleWorks offers honest guidance and expert installation.

Why Go Tankless?

Unlike traditional water heaters that store 30 to 80 gallons of pre-heated water, tankless models heat water only when needed. This on-demand technology results in less energy usage and eliminates the need for a bulky storage tank.

Other key benefits include:

Lower utility bills due to reduced standby heat loss
Compact size, making it easier to install in tight spaces
Longer lifespan, often lasting up to 20 years with proper maintenance
Endless hot water, perfect for large families or homes with multiple bathrooms

Gas vs. Electric Tankless Heaters

The best energy source for your home depends on your current utilities and usage needs. Gas tankless heaters typically deliver higher flow rates and are better suited for households with heavier hot water usage. Electric tankless heaters, on the other hand, are more compact and easier to install, making them a solid option for smaller homes or apartments.

Choosing the Right Size

Tankless systems are sized by flow rate, measured in gallons per minute (GPM). For example, a typical 2-bathroom home might need a 6–8 GPM unit. Choosing the wrong size can lead to inadequate hot water during peak times, so it’s important to consult a licensed plumber to match your system to your home’s needs.

At CastleWorks, our Orange County water heater experts conduct in-home evaluations to help you choose the right unit, fuel source, and installation location.

We Also Do Maintenance & Repairs

Once installed, your tankless system will require routine upkeep to stay efficient and reliable. CastleWorks also provides water heater maintenance and repair services, ensuring long-term performance and peace of mind.

Why Homeowners Choose CastleWorks

Licensed, local plumbing experts based in Yorba Linda
Fast, clean, and code-compliant installations
Trusted by hundreds of Orange County homeowners
Transparent pricing and satisfaction guarantees

Get the Right Water Heater—The First Time

CastleWorks proudly serves Yorba Linda and the surrounding Orange County communities with water heater expertise you can count on. Whether you’re upgrading to a tankless system or need help maintaining your existing setup, give us a call or schedule a consultation online to get the best solution for your home’s hot water needs.

      
 Excellent4.71728 reviews
 4.7
 Excellent1728 reviews
  Write a review 
 
 
 
   
 
 
      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.
  
 
     Posted on Google  
   
   Terri Mason 
 29 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. I am more than satisfied with the service I received from Castleworks Home Services.  From taking my phone call after hours when I discovered that my water heater was broken and leaking, and scheduling an appointment for the very next day… to keeping me updated on the estimated arrival time of my technician including a text with his full name and photo ID was truly impressive.  But what was even more impressive is the actual service itself.  Justin, the technician, was extremely easy to work with.  He was knowledgeable, polite, explained everything, answered all of my questions, and completed all of the work in one visit.  I couldn’t ask for a better experience and highly recommend this company! 5 ⭐️⭐️⭐️⭐️⭐️
  
 
     Posted on Google  
   
   ginni ashen 
 21 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. On time and very knowledgeable.
  
 
     Posted on Google  
   
   Peter Rosen 
 21 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Justin is the best ever …. Thank you for sending him and for your instantaneous responses …. A+++ company
  
 
     Posted on Google  
   
   Larry Macavinta 
 19 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great Job… Very professional and reasonable prices.
  
 
     Posted on Google  
   
   Matthew Berkowitz 
 19 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. We have just had 2 excellent experiences with Castleworks. Picked up the phone right away and was great with communication via phone and text to keep us informed as to when our technician would be out. And Justin the technician himself was absolutely amazing. Knowledgeable, worked clean and quick. We had such a good experience we ended up calling them back out right away for another issue with A/C that was long overdue and had another great experience with Brendan. So hard to find reputable companies that do what they say and that you can trust. Fully recommend them. Save their number!
  
 
     Posted on Google  
   
   Vanessa Condez 
 12 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. James Skresvig went above and beyond for me. He even changed a hose for me, completely unrelated to the job he came to do, just to help me out because I didn't have the right tool. He answered all of my questions and was very good at explaining their services without overselling anything - more like explaining options.
  
 
     Posted on Google  
   
   Christine Mannino 
 9 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Justin went above and beyond to help us replace our water heater! Walking us through each step of the process and telling us for things to look out in the future. Would definitely recommend to any friends or family if needed.
  
 
     Posted on Google  
   
   Rdt7 
 7 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Besides getting our water heater running, James was very knowledgeable and gave me useful information about upgrading to tankless. Would definitely use again!
  
 
     Posted on Google  
   
   Sherry Ramstead 
 7 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. James was a pleasure to work with. Very patient with a smile on his face and explained everything that would need to be done and why to resolve the issue with our water heater.

Contact Us Today!

Name

First

Last

Phone

Postal Code

How can we help?

I'd like to receive SMS messages about my project.

Messaging frequency varies based on your project needs. You can opt out at any time by replying STOP. Reply HELP if you are experiencing issues. Message/data rates apply.

I'd like to receive SMS marketing messages from CastleWorks.

Messaging frequency varies based on your project needs. You can opt out at any time by replying STOP. Reply HELP if you are experiencing issues. Message/data rates apply.

By submitting this form, you authorize CastleWorks to reach out to you about your project. We will never share your personal information with third parties for marketing purposes. Consent is not a condition of purchase. You can opt out at any time. View our privacy policy here: Privacy Policy and our Terms & Conditions Here: Terms & Conditions

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