Tankless Water Heater Repair & Maintenance

Fast, Expert Tankless Water Heater Repair You Can Count On

When your tankless water heater stops working, you're left without hot water for showers, dishes, and laundry. At Macaw Plumbing & Tankless, we specialize in diagnosing and repairing all major tankless water heater brands—and get your hot water flowing again.

We're a licensed, family-owned plumbing company serving Concord and surrounding communities. Tankless systems are our specialty, and we have the training and experience to fix what's wrong the first time.

Call (704) 798-2659 for same-day tankless water heater repair.

Common Tankless Water Heater Problems We Fix

Tankless water heaters are efficient and reliable—but like any system, they can develop issues over time. Here's what we repair most often:

No Hot Water or Inconsistent Temperature‍

If your water runs cold or fluctuates between hot and cold, the issue could be a faulty heating element, sensor, or gas valve. We'll diagnose the root cause and get your system heating properly again.

Error Code on Display‍

Modern tankless units display error codes when something's wrong. We know what those codes mean and can quickly address problems like flame failure, ignition issues, or blocked vents.

Low Water Pressure or Flow Issues‍

Mineral buildup inside the heat exchanger can restrict water flow and reduce pressure. We flush and descale your system to restore full performance.

Strange Noises or Vibrations‍

Rumbling, rattling, or humming sounds often signal sediment buildup, a failing fan, or loose component. We'll track down the source and fix it.

Leaks Around the Unit‍

Water pooling near your tankless heater can indicate a cracked heat exchanger, loose fittings, or valve issues. We'll locate the leak and make the necessary repairs to protect your home.

System Won't Turn On‍

If your unit won't fire up, the problem could be electrical, a gas supply issue, or a failed igniter. We troubleshoot the entire system to get it running again.

Why Choose Macaw Plumbing for Tankless Water Heater Repair?

Tankless water heaters are our specialty—it's right in our name. We've installed, maintained, and repaired hundreds of tankless systems across the Concord area, so we know these units inside and out. We hold NC State License #L.35944 and follow all local codes and manufacturer guidelines, which means you get professional, compliant work that protects your home and your investment.

We'll never push an unnecessary replacement. If your unit can be repaired affordably, we'll fix it. If it's time for a new tankless system, we'll explain why and give you options that fit your needs and budget. We know you need hot water, so we offer same-day service when you call early, plus emergency water heater support Monday–Friday evenings and Saturday mornings.

Family is at the heart of everything we do at Macaw, and we treat your home like we treat our own, with care, respect, and quality workmanship.

How Tankless Water Heater Repair Works

1. Call Us for Fast Scheduling
Reach us at (704) 798-2659. We'll schedule a service appointment that fits your timeline—often same-day.

2. We Diagnose the Problem
Our technician will inspect your tankless system, check error codes, test components, and identify what's causing the issue.

3. We Explain Your Options
Before we do any work, we'll walk you through what needs to be fixed, the cost, and how long it will take. No surprises.

4. We Make the Repair
Once you approve, we get to work. We carry common parts on our trucks, so many repairs can be completed on the spot.

5. We Test the System
After the repair, we test your tankless water heater to make sure it's heating properly, holding temperature, and running efficiently.

Schedule Your Tankless Water Heater Repair Today

Don't let a broken tankless water heater leave you without hot water. We'll get your system back up and running—fast, professionally, and at a fair price.

Call (704) 798-2659 to schedule service.

Hours:
Monday–Friday: 8 AM–5 PM
Emergency Service: Monday–Friday 5 PM–10 PM (on call)
Saturday: 8 AM–10 AM (emergency plumbing only)

Frequently Asked Questions

How long does a tankless water heater repair take?
Most repairs are completed in 1–2 hours, depending on the issue. If we need to order a specialty part, we'll give you a clear timeline and get it done as quickly as possible.

How much does tankless water heater repair cost?
Repair costs vary based on the problem and parts needed. We provide upfront pricing before we start any work—no hidden fees or surprises.

Do you work on all tankless water heater brands?
Yes. We service all major tankless brands, including Rinnai, Navien, Rheem, Noritz, Bosch, and more.

How often should I maintain my tankless water heater?
We recommend annual maintenance—especially descaling—to prevent buildup and keep your system running efficiently. Regular maintenance helps avoid costly repairs and extends the life of your unit.

Can you repair tankless water heaters under warranty?
Yes. If your unit is still under warranty, we can help coordinate repairs with the manufacturer and handle the work according to warranty terms.

What if my tankless water heater can't be repaired?
If the repair cost is too high or the unit is beyond its lifespan, we'll recommend a replacement and provide options for a new, energy-efficient tankless system. We'll help you choose the right size and model for your home.