Tankless Water Heater Repair in Lewisville

A plumber from Mother Modern Plumbing performing Tankless Water Heater Repair in Lewisville, Texas

What's included:

  • Certified Repairs on Rinnai, Navien, A.O. Smith + More
  • 12-Year Bumper-to-Bumper Warranty
  • Fully Stocked Trucks for Same Day Repairs
  • Get Same Day Service!
  • Family Owned and Operated
  • Fix Your Issue 100% Guaranteed
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A plumber from Mother Modern Plumbing performing Tankless Water Heater Repair in Lewisville, Texas
925 S Kimball Ave Ste 100, Southlake, TX, 76092
Hours: 24 Hour Service
(817) 382-9377

Read three Tankless Water Heater Repair reviews!

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Cristina Robinson

Josh from Mother was fantastic! He arrived on time, wore protective shoe covering, had a red carpet outside my front door, looked at the issue, explained what was wrong and what it would take to fix it, created a temporary fix that day, ordered the remaining needed parts, and set up the next appt. I paid for everything on the first visit so no money needed for the follow up of installation later. Today Josh reached out to let me know he was on the way annd arrived to install the ordered parts and checked and explained everything. I am beyond thrilled. I signed up for a year of membership so I can call them anytime and get help quickly. This is my go to plumbing company now! The folks on the phone were so kind and thorough and Josh is very personable, polite, neat and thorough. Thank you SND for giving me back hot showers!

Verified  review

November 2024

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Marjorie Tulana Keller

Josh was amazing! My husband and I really appreciated the time he took to explain everything regarding the tankless water heater, as well as other options! He was very professional and had such a knowledgeable expertise. He didn’t seem in a hurry. He did above what we expected.

Verified  review

February 2025

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Brian Policky

Dillon Ashton was exceptional in explaining the issues he found with our Rennai tankless HW heater and provided several options for rectifying our problem.

Verified  review

July 2025

A plumber in Lewisville stands smiling in front of the Lewisville, Texas city hall, wearing a dark uniform shirt with "Dillon" and "Journeyman" embroidered on it.

Your tankless water heater isn’t delivering hot water on-demand like you expect. Whether it’s cold bursts of shower water or unexpectedly high energy bills, you need expert repairs done by plumbers who actually know how to service these complex systems.

At Mother, we're more than licensed plumbers—we’re a modern plumbing service built on thoughtful customer care and tech-driven solutions. We're transforming how Lewisville homeowners experience tankless water heater repair.

Need tankless service? Call us 24/7 for priority scheduling and the first available appointment.

Mother’s Lewisville Tankless Water Heater Repair Advantage

Our Master Plumbers built our repair service to fix problems quickly and solve issues permanently—the same kind of service we’d give our own mothers.

  • Your Concern: I'm worried about getting a general "water heater guy."
    • Our Solution. Certified Tankless Expertise. We're not just "water heater guys." We have deep training and hundreds of tankless repair jobs under our belts. We know how to service any problem in every major brand of on-demand water heater.
  • Your Concern: I need assurance the repair will last.
    • Our Solution. Added Warranty Protection. We back our work with a powerful 12-year warranty on parts and labor. Your hot water confidence is guaranteed for the long term.
  • Your Concern: I don't want to wait all day for service.
    • Our Solution. Same-Day Service & Full Transparency. Our trucks are fully stocked, meaning almost every job is done on the same day. You'll also know exactly when your plumber is coming, what they look like, and their qualifications ahead of time.
  • Your Concern: I'm worried about cost surprises.
    • Our Solution. Fixed Quote Certainty. After an expert inspection, you’ll receive a fixed quote. The price is final—no hidden fees, no surprises.
  • Your Concern: I need a professional who respects my home.
    • Our Solution. Clean and Caring Service. We bring the boot covers, drop cloths, and clean service, followed by even better cleanup.

High tech service. Even higher standards. Say hello to Mother Modern Plumbing.

Serving Lewisville’s Neighborhoods with Expert Tankless Water Heater Repairs

Common Q's about Tankless Water Heater Repair

What are the most common tankless water heater repair types?

How often should I descale my tankless water heater?

How often should I replace the inlet filter on a tankless water heater?

What types of water heaters do you install and repair?

Get Your Lewisville Tankless Water Heater Repair Knocked Out Fast

Make your home care easier, smarter, and stress-free.
Discover the difference with Mother.

Our Services

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