Water Heater Installation

No Hot Water? No Problem.

     EXCELLENT  
  1728 reviews

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

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Water Heater Installation in California

Tank & Tankless Water Heater Solutions from Plumbing Pros

Looking to replace or upgrade your water heater? Whether you need a traditional tank or a high-efficiency tankless system, CastleWorks Water Heaters offers professional water heater installation backed by decades of local plumbing experience. Our team helps homeowners throughout California choose the right water heater type, size, and fuel source—without upsells or surprises.

What Type of Water Heater Is Best for Your Home?

Choosing the right water heater depends on your household size, energy preferences, and long-term efficiency goals. Here’s a quick breakdown of your options:

Traditional Tank Water Heaters

These systems store hot water in a large tank—typically ranging from 20 to 80 gallons. They’re easier and less expensive to install, making them a great choice for many families.

Learn more about tank water heater repairs →

Tankless Water Heaters

Also known as on-demand systems, these heat water only as you need it. They cost more upfront but save energy and lower monthly utility bills.

Thinking about going tankless? Read our guide →

Choosing Between Gas & Electric Water Heaters

Your home’s access to utilities and your energy rates will determine which fuel source is best:

Gas water heaters tend to cost more initially but offer lower monthly operating costs—ideal for homes already equipped with gas lines.
Electric water heaters are usually more affordable upfront and may be a smart choice where gas isn’t available or cost-effective.

Need help deciding? Our experts will walk you through both options during your in-home consultation.

How Big Should Your Water Heater Be?

Tank-style heaters are available in a variety of sizes. The most common is 40 gallons, which suits an average household—but larger families may require 50+ gallons.

The size of your tank affects both installation cost and energy usage. Our licensed plumbers will assess your water usage habits and help you size your unit correctly, so you’re not overpaying for capacity you don’t need—or running out of hot water too soon.

Why Homeowners Choose CastleWorks

Transparent pricing before work begins
Fast, expert installations from licensed plumbers
Full compliance with California plumbing codes
Guidance on rebates and energy-saving upgrades

Your new water heater will be installed with care—and you’ll know exactly what to expect from start to finish.

To keep your system running efficiently and avoid unexpected breakdowns, take advantage of our maintenance services for both tank and tankless water heaters—it’s the best way to ensure hot water year-round.

Request a Water Heater Installation Quote

Ready for a hassle-free installation with upfront pricing and expert guidance? Trust CastleWorks to recommend the best-fit system for your home’s needs and budget. Call us today or fill out the contact form below!

      
 Excellent4.71728 reviews
 4.7
 Excellent1728 reviews
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      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.

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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: