Tankless Water Heater Repair

Reliable Hot Water Solutions For Your Home

When a tankless water heater stops doing its job, it affects everything from morning showers to dishes and laundry. If your on demand system is delivering cold water, shutting off, or flashing error codes, you need clear answers and a dependable fix, not guesswork.

Sunrise Plumbing is based in Rockwall, and our team provides tankless water heater repair Rockwall homeowners can rely on. Since 2013, we have helped families across the greater Dallas area restore consistent hot water with a process that is straightforward and predictable.

We use Straightforward Pricing®, arrive on time, and keep you informed at every step so you know what is happening with your system and what it will cost before any work begins. Our goal is to help you move from frustration to confidence as quickly as possible.

No hot water or error codes showing? Call Sunrise Plumbing at (214) 773-2506 or message us online for professional tankless water heater repair done right the first time.

Why Rockwall Homeowners Call Us

When a tankless unit fails, most homeowners do not have time to sort through dozens of companies. You want a local team that is already trusted in the area and that is ready to take your call any time of day. That is where we focus our effort.

We have been serving Rockwall and the greater Dallas area since 2013 with a consistent focus on residential plumbing. Our team is built around five core values, including teamwork, character, leadership, belief, and a winning mindset. These values guide how we answer the phone, how we work in your home, and how we follow through after the job.

Our technicians are licensed, background checked, and trained in current plumbing technology, including modern tankless systems. When we arrive, you can expect a uniformed professional, shoe covers, and a clean work area from start to finish. Many of our clients tell us they appreciate that we leave their home cleaner than we found it.

Pricing is often the biggest unknown with repair work. With our Straightforward Pricing® model, you see the price before any repair begins. There are no hidden fees, no surprise add ons at the end of the visit, and our pricing stays consistent even for urgent calls outside standard business hours.

Availability matters when you have no hot water. We are available 24/7, and you always reach a live person when you call, not an automated system. Our customer service team can help you describe what is happening, answer basic questions, and schedule a visit that fits your day. Over the years we have earned a 4.8 star rating across hundreds of verified reviews, with homeowners frequently mentioning our responsiveness, communication, and professionalism.

Our Tankless Repair Process

Knowing what will happen during a service visit can make the decision to call much easier. We work to keep the process simple, transparent, and respectful of your time and home, from the first phone call to the final cleanup.

When you reach out to us, a live team member listens to your description of the problem, such as error codes, temperature swings, or total loss of hot water. We then schedule a visit within a defined window and keep you updated so you are not left wondering when someone will arrive.

On the day of service, our technician arrives on time in a marked vehicle, introduces themselves, and asks a few focused questions about the history of your system. Before stepping into work areas, they use shoe covers and protect nearby surfaces. We know we are working in your home, not a job site, and our behavior reflects that.

Diagnosis is where careful work matters. For a tankless system, we typically start by checking the unit for error codes, verifying power or gas supply, confirming water flow, and reviewing venting and filtration. In North Texas, hard water can contribute to scale buildup, so we often inspect heat exchangers, inlet screens, and related components for mineral deposits or debris that may restrict flow.

We use modern diagnostic tools when needed, such as digital meters and camera inspections, to pinpoint issues instead of guessing. Once the problem is identified, we step back and walk you through what we found in clear, everyday language. You see your options and the associated pricing before we touch the system for repair.

With Straightforward Pricing®, you know the cost of the chosen option upfront. We do not begin work until you are comfortable with the plan. During the repair, we work efficiently and carefully, whether that involves cleaning components, replacing parts, adjusting gas settings, or addressing venting concerns. Afterward, we test the system under normal use, confirm that hot water is running consistently, and answer any questions you have.

Here is what you can expect during a visit:

• Clear scheduling with a defined arrival window and updates if anything changes.
• A licensed, uniformed technician who respects your home and communicates clearly.
• Thorough diagnostics, straightforward repair options, and pricing before any work starts.
• Repairs completed as approved, followed by testing and explanation of what was done.
• Work areas cleaned and your tankless system left ready for everyday use.

We do not consider the job complete until you feel your questions have been answered and you are satisfied with the work. Our aim is to be the company you feel comfortable calling the next time a plumbing issue comes up.

Common Tankless Water Heater Issues

Understanding what might be going wrong with a tankless unit can help you decide when it is time to call for help. While every home is different, certain problems tend to show up frequently in Rockwall and surrounding communities.

One common complaint is getting cold water instead of hot, or the temperature changing suddenly during a shower. This can be related to flow rate, failing sensors, ignition problems, or mineral buildup limiting the heat exchanger. In other cases, the unit may shut off entirely and display an error code on the control panel.

North Texas is known for hard water, which often leads to scale inside plumbing systems. Tankless units are especially sensitive to this, since narrow passages and heat exchangers can accumulate mineral deposits over time. If your system has not been flushed or maintained regularly, buildup can cause reduced flow, noisy operation, and eventual shutdowns.

Installation details can also affect performance. Incorrect venting, improper gas line sizing, or undersized units that were not matched to your home’s demand may lead to inconsistent hot water. Our technicians are trained to look at the entire setup, not just the unit itself, so we can explain whether the issue is due to a component failure, a maintenance need, or a design concern.

Watch for these warning signs that you should schedule service:

• Hot water cuts out during showers or only works some of the time.
• The unit displays error codes or warning lights more than once.
• You hear unusual noises when the system starts or runs.
• It takes much longer than it used to for hot water to reach fixtures.
• Your gas or electric bill increases without a clear reason.

Sometimes, a focused repair or thorough cleaning can restore a tankless system to dependable operation. In other situations, especially with older units or major installation issues, we may discuss both repair and replacement options. Our role is to provide clear information, answer your questions, and help you choose the path that makes the most sense for your home and budget.

Serving Rockwall & North Texas

Choosing a plumbing company that truly works in your community can make a noticeable difference in service and response. Sunrise Plumbing is based here in Rockwall, and our trucks are on the road every day throughout Collin, Dallas, Denton, Ellis, Hunt, and Kaufman counties.

Because we work in Rockwall and the greater Dallas area regularly, we are familiar with the local housing stock, from newer subdivisions with modern tankless setups to older homes that have been upgraded over time. This helps us anticipate how systems are laid out, how gas and venting are routed, and where access challenges might appear.

Water quality is another local factor that affects tankless systems. Hard water in North Texas can cause scale buildup faster than in some other regions. We keep that in mind when we inspect, flush, or repair your tankless water heater, and we can discuss maintenance approaches that fit the conditions in your home.

Our dispatch team works to schedule efficiently so we can respond promptly when a Rockwall homeowner loses hot water or notices worrying signs from a tankless unit. Over the years, many families in this area have called us back for other plumbing needs after we helped with a water heater repair problem. That long term connection is something we value and work to maintain on every visit.

Don’t wait for a complete system failure—call Sunrise Plumbing today at (214) 773-2506 or book your tankless water heater repair online. Fast response, honest solutions, lasting results.

Frequently Asked Questions

Can my tankless water heater usually be repaired?

Many tankless issues can be repaired, especially when problems involve sensors, valves, or scale buildup. During our visit, we diagnose the cause and explain your options with pricing before work starts. For older units or major failures, we may also discuss replacement so you can compare both paths.

How fast can you come to my home in Rockwall?

We offer 24/7 availability and a live person answers when you call. Actual arrival times depend on scheduling and current demand, but our goal is to respond as quickly as we reasonably can. Our Rockwall base and North Texas coverage help us reach nearby homes efficiently.

What will tankless water heater repair cost me?

Cost depends on what we find during diagnosis, such as whether parts need replacement or cleaning addresses the issue. With Straightforward Pricing®, we present clear options and exact prices before any repair begins. You approve the work you want, and there are no hidden fees added at the end.

Do you work on my tankless heater brand?

Our licensed technicians are trained on a wide range of modern tankless systems. When you call, you can share the brand and model if available, which helps us prepare. During the visit, we confirm compatibility and explain any brand specific considerations that could affect repair or maintenance.

What should I do before your technician arrives?

It helps to note any error codes, when the problem started, and which fixtures are affected. If you can safely do so, you may reset the unit once and see if the issue repeats. Otherwise, leave the system as it is. We will handle the inspection and testing.

Get Help With Your Tankless System

If your home is dealing with unreliable hot water, you do not have to troubleshoot alone. Our team in Rockwall is ready to inspect your tankless system, walk you through what is happening, and provide clear options so you can move forward with confidence.

When you call, you will speak with a live member of our team who can schedule a visit and answer basic questions. Our licensed technicians arrive on time, use Straightforward Pricing®, and treat your home with care from start to finish. If you are ready to schedule tankless water heater repair, we are here to help.

Call (214) 773-2506 to schedule your visit with Sunrise Plumbing.