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Tankless Water Heaters

Are you in search of the best Tankless Water Heaters? Look no further than THE Water Heater Company! Let us be your trusted partner in ensuring your home or business enjoys reliable hot water year-round.

Tankless Water Heaters in Fullerton, CA


In Fullerton, where historic charm meets modern living, homeowners are increasingly seeking ways to upgrade their property’s efficiency and convenience. One of the most significant upgrades you can make is transitioning from a bulky storage tank to a high-efficiency tankless water heater. Imagine a morning where you never have to worry about being the last one in the shower, or a home where you gain back valuable square footage in your garage or utility closet.

At The Water Heater Company, we are Fullerton’s premier authority on tankless technology. As authorized experts for leading brands like Noritz and Rinnai, we provide specialized installation, precision repair, and preventative maintenance designed specifically for on-demand systems. We understand the unique plumbing requirements of Orange County homes and are dedicated to delivering an endless supply of hot water to your family.

Why Switch to a Tankless Water Heater?

Fullerton residents choose tankless systems for more than just the luxury of a long shower. These units offer tangible benefits that traditional tanks simply cannot match such as:

  • Endless Hot Water on Demand: Unlike traditional tanks that hold a finite amount of water, tankless heaters heat water instantly as it flows through the unit. This means you can run the dishwasher, start a load of laundry, and take a shower simultaneously without the water ever turning cold.
  • Superior Energy Efficiency: Tankless systems only use energy when you turn on the tap, eliminating “standby heat loss”—the wasted energy spent keeping 50 gallons of water hot all night. This translates to a 24% to 34% increase in energy efficiency for most households.
  • Unmatched Space Savings: Traditional tanks are large and take up significant floor space. Tankless units are roughly the size of a carry-on suitcase and are wall-mounted, freeing up room for storage or other home improvements.
  • Longer Service Life: While a standard tank typically lasts 8 to 12 years, a well-maintained tankless water heater can last 15 to 25 years or more, making it a superior long-term investment for your home.

Professional Tankless Installation in Fullerton

Installing a tankless water heater is a complex process that requires more than just a simple swap. Because these units have higher power and venting requirements, professional installation is essential to ensure safety and performance. At The Water Heater Company, our process is thorough and code-compliant:

  • Gas Line and Venting Upgrades: Tankless units often require larger gas lines and specialized stainless steel or PVC venting to safely exhaust combustion gases. We handle all necessary retrofitting to ensure your home meets Fullerton building codes.
  • Permit and Inspection Management: California law and City of Fullerton codes require a permit for water heater replacements. We manage the entire permit process, ensuring your installation is inspected and fully compliant with local safety standards.
  • Sizing for Your Lifestyle: We perform a detailed analysis of your home’s peak water usage to recommend a unit with the correct flow rate for your household, ensuring consistent temperature even during high-demand periods.

Tankless Maintenance: Protecting Your Investment

Fullerton is known for having relatively hard water, which can lead to mineral scale buildup inside the delicate heat exchanger of a tankless unit. Without regular care, this scale can reduce efficiency and lead to premature system failure. Our tankless maintenance service includes:

  • System Descaling and Flushing: We use specialized solutions to flush out mineral deposits, keeping your heat exchanger clear and efficient.
  • Filter and Component Cleaning: We clean the air and water filters, as well as the ignition rods, to ensure the unit fires up reliably every time.
  • Safety and Performance Check: We inspect all electronic sensors and valves to catch minor issues before they become expensive repairs.

Why Fullerton Homeowners Choose The Water Heater Company

Selecting a service provider for your home’s hot water system is about more than just finding a repairman; it is about finding a partner you can trust. Fullerton residents consistently choose The Water Heater Company because we operate with a unique set of values that prioritize your experience and your home’s long-term safety.

  • A People-First Mentality: We believe that exceptional service starts with how we treat people. Our team is dedicated to forging lasting relationships by delivering expertise with a personal touch, ensuring that every solution is tailored to your unique needs.
  • Unwavering Transparency: We operate with total honesty, integrity, and reliability. This means you will always receive upfront pricing with no hidden fees and a clear, detailed explanation of the work required before we begin.
  • Factory-Trained Authority: True authority is earned, not claimed. Our technicians undergo rigorous, ongoing training and are factory-authorized for industry-leading brands like Bradford White, Noritz, Navien, and Rinnai.
  • Seamless Technology: From the initial quote to scheduling and final invoicing, we utilize modern technology to keep you informed every step of the way. We even handle the paperwork to register your new unit for its manufacturer warranty.

When you choose us, you are choosing a team that strives to be “Better Every Day,” ensuring that your Fullerton home receives the highest standard of craftsmanship in the industry.

Trust Fullerton’s Tankless Experts

Switching to tankless is a game-changer, but it requires a team that understands the technology inside and out. The Water Heater Company is proud to offer fair, transparent pricing and expert service that has earned us thousands of 5-star reviews across Southern California.

Call The Water Heater Company today at (877) 798-7487 to schedule your Fullerton home analysis and start enjoying endless hot water!

  • “Fair Pricing & Expert Service”

    This is the best company you want to hire, period! Excellent customer service, hones , and fairly priced! They are professionals that will provide you with exactly what you need. Zak G was my technician and I am grateful for his outstanding work. There’s no other company that will take care of you! Please get The Water Heater Company to take care of you the correct way. Thank you for providing people with high quality work, done with pride, and integrity!

    Gustavo C.
  • “Extremely Knowledgeable!”

    I simply cannot say enough wonderful things about this company specifically, Zach R. He was absolutely amazing, professional, extremely knowledgeable and so friendly! I don’t leave reviews often, but this absolutely warrants a review! He was able to replace my water heater the very same day and went above and beyond. Just top notch service all around! He made a Stressful situation much less stressful, and I am truly appreciative. If you ever have a water heater problem, call The Water Heater Company ASAP, and ask for Zach R. I would recommend time and time again!

    Tara L.
  • “Responsive & Professional”

    My water heater was leaking and growling. Who do I call to replace it? A plumbing firm? If so, which one? I ran across The Water Heater Company and figured a firm that specializes only in water heaters should be a wise choice. Right? My decision turned out to be a good one. They are so responsive and professional. The price was fair and reasonable. Top quality USA made water heater unit was installed. The workmanship was superb. Effective communication from start to finish. Terrific overall experience!

    Mike B.
  • “Reoccurring professionalism”

    Always have a great experience with this company. They are professional, prompt, and explain services well. Would recommend highly.

    Julianne A.
  • “Organized & Prepared”

    Mitchell arrived on time, provided expert advice, and had all necessary hardware to complete the job efficiently. After discussing options, he replaced my faulty pressure regulator and valve, resolving the issue immediately. His organization, efficiency, and cleanup were outstanding. As a certified Safety Engineer, I can attest that Mitchell’s workmanship and customer care are among the best I’ve seen.

    Phil M.
  • “Personable & Affordable”

    The Water Heater Company is very reliable and works with its customers to achieve the best possible outcome. Everyone is extremely helpful, kind, personable, and made sure I could get the water heater I desired at a price that I could afford. My technician, Evan, made sure that my house was in perfect order before and after installation, which was almost 3 weeks apart. Evan walked me through the new system with ease and professionalism that other usually do not take the time to do. I’m very satisfied with my purchase and everyone involved. Thank you for everything. I’m only sorry that I didn’t think to take a photo of Evan and his wonderful work!

    Liz B.
  • “Speechless Professionalism”

    Words cannot express my gratitude. Evan and his team did a superb job coordinating and installing a brand new tankless water heater for our family. We are so grateful with the amazing service, professionalism, and attention to detail that was given. Highly recommend! Thank you Evan!

    Mike R.
  • “Exceptional & Responsive”

    Can’t say enough positive things about this company. I called several companies and The Water Heater Company responded within minutes. The other companies called me more than a day later. They let me know when the repairman was going to be here and sent a pic so I knew who he was. Their office staff was excellent in all ways. They are the front line to any business, and they are amazing. A real asset to this company is Evan. He was extremely knowledgeable and professional. He knows his business. He kept us informed every inch of the process. We couldn’t of asked or gotten a better person. He had to clean up the mess the last person created and explained everything to us that was wrong. We will be returning customers for sure!

    M L.
  • “Simply Efficient & Flawless”

    We recently had TWHC replace a tankless water heater in one home and two tank water heaters in another. From the service staff to the technicians on-site, everyone was a pleasure to work with—timely, efficient, and organized. The quality of the work was flawless. We’ve also used TWHC for service work and have been consistently impressed with the craftsmanship and job quality.

    A special shout-out to Billy, who provided excellent phone support. He was courteous, helpful, and made a lasting impression. Thanks to him, we’ll continue to choose TWHC for our future needs.

    Richard L.
  • “Great Customer Service”

    I recently hired The Water Heater Company for a tankless water heater installation, and Evan did an excellent job. When it came time for the descale service, I requested him again. I also decided to install the Halo filtered water system, and Jake was incredibly helpful in guiding me to the best solution for my home.

    The company’s customer service is fantastic. They kept me updated on Evan’s arrival, and I was happy to see him again. He’s always kind, confident, and ensures everything is done right, even with complex installations. I’m very satisfied with their service, products, and overall experience. Thank you!

    B A.