Tankless Water Heater Repair in Metro Atlanta, GA

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When your tankless water heater needs repair, you need a team of experienced professionals who can provide a fast, reliable, and professional service. At Plumbing Express, we are Greater Metro Atlanta’s premier tankless water heater repair specialists. Our factory-trained technicians have the expertise to repair all makes and models of tankless water heaters, ensuring that your home’s hot water supply is restored as quickly as possible. With over 35 years of experience, our licensed and certified plumbers can diagnose and repair any tankless water heater problem, from minor issues to major malfunctions.
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Why Choose Plumbing Express for Your Tankless Water Heater Repair?
Plumbing Express is a Rinnai ACE Dealer, meaning we have earned the highest status as a team that is factory-trained by Rinnai to fix malfunctioning tankless units and problematic installations of all makes and models. Whether it’s an ignition failure, temperature fluctuation, or a unit throwing error codes, we have the specialized tools, diagnostic software, and technical know-how to pinpoint the issue and get your hot water flowing fast.
Factory-Trained Technicians for All Makes and Models
We don’t just work on tankless systems, we’re trained and authorized by the leading brand in the industry, Rinnai. That means repairs done right the first time, with access to parts and support you won’t find everywhere.
Advanced Diagnostics and Specialized Tools
We have exclusive access to specialized tools and technical resources that allow us to diagnose and repair tankless water heaters quickly and accurately. Our advanced diagnostic capabilities allow us to identify the root cause of the problem and make the necessary repairs to get your hot water flowing again.
Extended Warranty Authorization
As an exclusive Rinnai Ace Dealer we have the ability to offer enhanced warranty protection on our repairs. This means that you can have peace of mind knowing that your tankless water heater is covered in the event of a future problem.
Over 35 Years of Local Experience
We have been serving the Metro Atlanta area for over 35 years, and we have a deep understanding of the unique challenges of the region’s plumbing systems. We have repaired thousands of tankless water heaters in Georgia homes, and we have the experience to get the job done right the first time.
Our Comprehensive Tankless Water Heater Repair Services
We offer a full range of tankless water heater repair services to meet the needs of our customers. Our services are designed to be fast, effective, and affordable.
No Hot Water
If you have no hot water, it could be due to a number of issues, including a faulty ignition system, a broken thermostat, or a tripped circuit breaker. We will diagnose the problem and make the necessary repairs to get your hot water flowing again.
Fluctuating Water Temperature
If you are experiencing fluctuating water temperatures, it could be a sign of a problem with the flow sensor or the mixing valve. We will inspect your tankless water heater to determine the cause of the problem and make the necessary repairs.
Strange Noises
If you are hearing strange noises coming from your tankless water heater, it could be a sign of sediment buildup in the heat exchanger. Sediment buildup can reduce the efficiency of your tankless water heater and can also lead to more serious problems. We will flush the heat exchanger to remove the sediment and restore your tankless water heater to proper working order.
Error Codes
If you are seeing an error code on your tankless water heater’s display, it is important to have it checked out by a professional. We have the knowledge and experience to diagnose and repair any error code that your tankless water heater may be displaying.
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Frequently Asked Questions (FAQs) About Tankless Water Heater Repair
The cost of a tankless water heater repair can vary depending on the type of water heater and the extent of the damage. We provide detailed, upfront estimates for all our projects.
If your tankless water heater is old, outdated, or has multiple problems, it may be more cost-effective to replace it. We can help you determine whether it is better to repair or replace your water heater.
Most tankless water heater repairs can be completed in just a few hours. We will work with you to schedule the repair at a time that is convenient for you.
Yes, we offer a warranty on all our tankless water heater repairs. We stand behind our work and we are committed to your satisfaction.
Signs that your tankless water heater may need repair include a lack of hot water, fluctuating water temperatures, strange noises coming from the unit, and error codes on the display.
Contact Our Metro Atlanta Tankless Water Heater Repair Experts
If you are in need of tankless water heater repair services in the Metro Atlanta area, don’t hesitate to contact the experts at Plumbing Express. We will provide you with fast, reliable, and affordable service. Call us at (404) 410-0221 to schedule a consultation.

Schedule Service
Plumbing Repair Discounts
Get expert service at an affordable price.
Ensure your home’s plumbing system is in top shape.
Our Services
What Our Customers Are Saying
With over 35 years of experience, Plumbing Express has earned the trust of homeowners across Atlanta, GA. Backed by 1,500+ reviews and a 4.9-star rating, we take pride in delivering top-quality plumbing and repiping services. See what our satisfied customers have to say about their experience with us!
Daniel was amazing! He represented the company to the very best standards! I will dwfinitely use him again! Very Professional! Courtesy! A very positive experience! Will use in the future! Absolutely
This was my second time using Plumbing Express. Once again, I had an excellent experience with Dylan
Anthony came to my house for an ongoing problem of extremely high water bills. He quickly diagnosed and fixed the issue. Anthony has a pleasant attitude and provided great service with professionalism and care for my home and property.
Everything about my experience was A++ service. From the friendly receptionist who took our call and let us know available times to Dylan who was friendly, knowledgeable and extremely professional. He helped fix everything and left it better than ever. Great Atlanta plumber team. You will not be disappointed!
My issue was a water heater being a great distance from my kitchen sink causing water waste as I waited for hot water to reach the kitchen. Daniel was very familiar with the issue. In a very brief time, he installed a recirculating pump on my water heater and a sensor valve at my sink. I now have instant hot water where I need it. Express plumbing was very responsive to my call, arrived promptly, and Daniel did an exceptional installation job. Express Plumbing can be proud to have an employee like Daniel representing them.
Very nice experience working with Plumbing Express, particularly with Tim Robinson who complete the job as expected. He listened and understood my concerns and try to address them as close as possible. Very nice work. Thanks guys.
Rod was courteous and focused. He had the situation sized up and solved by the time I got out to the meter-box to greet him. I was impressed with his talent for deduction and followed his train of thought in trouble shooting the problem. There was no leak after the watermeter and the watermeter worked fine. The evidence was subtle but it was there. Water wasn't leaking out of the box it was leaking in by the direction of the mud residue build-up. Thanks again Rod!
We had water pressure and water temperature issues, which turned out to be caused by a failing pressure regulator valve and a failed valve in a crossover recirculator. Anthony diagnosed and replaced both, repaired a pinhole leak in a copper pipe near the PRV, and did the annual service on our tankless heater, all in less than 3 1/2 hours including a 45 minute trip to pick up the correct PRV for our system. He is always fast, efficient and knowledgeable, and willing to answer all our questions.
Daniel did a great job with the tankless installation, educating us on the new unit, and was very professional. Happy to have hot water once again. Thank you.
Rob came in and was friendly and completed the toilet repair quickly and professionally.
Fantastic, trustworthy and reliable Plumber. Highly recommend. Daniel was awesome. Hard to recommend any other plumbing business in Atlanta! These guys are honest and don’t nickel and dime you for everything.
We had a pool of water forming in our front yard, so we scheduled an appointment with Plumbing Express and they quickly sent Daniel to come diagnose the issue. When he arrived, he let me know what the potential issues were and gave me a very detailed breakdown of the costs and work involved, from best to worst case scenario. He was able to break things down in a way that I could easily understand, and I could tell that he was being honest with me which gave me the confidence to hire him to work on the issue. He quickly found the leak, showed me, and I immediately agreed to have him fix the pipe. Within an hour or so he had the leak fixed and filled the area he had to dig up, all while it was so cold it actually began to snow a little bit. I could not ask for better service and will happily go with Plumbing Express in the future for any plumbing needs.
Rod was very professional, courteous, and quick. I've also used Plumbing Express in the past and was happy with the service.
Tim was great. Took the time to explain what he was doing and break down everything that needed to be done.
I requested Dylan because he had previously came to our house to diagnose what was wrong with our Renni tankless water heater. He always explains what is wrong and what needs to be done to fix what's wrong. Dylan this a highly talented plumber.
They say, “you won’t know what someone is made of until you see them navigate problems and mistakes.” The install team were incredibly professional and courteous. They did unfortunately have a couple of big missteps, but they and their boss Ty handled it the way great companies do. They listened apologetically and made it right!! Ty acted honorably to make things right and Lucio, Joe, Ben and Rad did a tremendous job replumbing the house in just one day to bypass the leak under the slab. Grateful for their hard work and will certainly recommend to my friends and family!
Daniel did a great job of telling me exactly what the issues were as well as the solutions. He finished the work in a timely fashion and was able to recommend another company for possible water damage.
Polite, customer friendly. Both were very nice. Work completed on time and did what they said. Thanks, Harry Fraley
Anthony hooked up a firepit to a new gas line. He did a good job and worked quickly. He was friendly and explained things well.
Service is prompt and expert. Highly recommend. Mr Robinson minimized any disruption possible from installation. His professionalism and attention to detail is outstanding.
Third time using them, very positive experience, friendly, efficient and do clean work. Will call them again.
Very calm, respectful, and explained things well to someone who doesn’t know much about plumbing.
Anthony was amazing to work with. Very knowledgeable, friendly, and very quick to respond to our situation! We would recommend him to anyone.
I am very pleased with their work. Were the most affordable and they a terrific job. I highly recommend it
Anthony was very competent, professional and friendly. He answered all my questions throughly. Highly recommend!
Thanks to Rod Anderson. I had a great experience with the Mr. Anderson who came to my home. He was very professional, respectful, and honest. You could tell he really knew his work and took the time to explain everything clearly. I truly appreciated his knowledge and transparency. I would highly recommend his services and will definitely call him again if I ever need plumbing help!
After suffering a second leak under our slab and getting quotes from various plumbers, we decided to have our house repiped through the attic. Ed came by from Plumbing Express and I was convinced that they were the right company. Not only was their bid competitive with the other plumbers, but they also provided better insulation for the pipes and turnkey drywall repair and paint. The plumbing crew were polite and professional and kept the work areas clean. They kept the damage and the dust down to a minimum which was a pleasant surprise. After they completed the job, Flaniel repaired and painted the walls like new with no signs of patching. He was super clean and even mopped the floors before he left. I also want to give a shout out to Ivan in the office who orchestrated everything. Finally, I can say without a doubt, that if you have plumbing issues, Plumbing Express is the one to call.
Anthony is very professional and polite. He installed plumbing during reno for the master bath, basement bath and new kitchenette. Highly recommend.
Rod did a great job.He was very professional and informative. Great customer service overall.
Very happy with the pipe replacement. The whole team was super professional, knowledgeable, efficient and communicative
Installed new water heaters and a whole home water filter system. Great communication. Did everything they said they would do in the timeframe stated. Left everything clean and answered all my questions.
I had an outstanding experience with Rod. He was professional, punctual, and extremely knowledgeable. He quickly diagnosed the problem, explained everything clearly, and completed the work efficiently. The quality of his work was excellent, and he left everything clean and neat when he finished.
Smooth process from receiving the initial estimate to completion of our complete home repiping.
Rod Anderson was my technician. He was courteous, prompt, and knowledgeable. He was able to fi n d the problem and recommended next steps. Thanks for your services.
Had a leaking pipe around the hot water heater and another one showing alot of corrosion from calcium buildup. I needed these pipes repaired before they become a bigger problem. I have used Plumbing Express in the past and had great results so I called them again and got great results from their service on repairing these pipes and quick and efficient service. Dylan was great and very efficient and knowledgeable about what repairs needed to be done. I will definitely use Plumbing Express and ask for Dylan when I have any plumbing problems in the future!