Tankless Water Heater Repair in Keller

- Expert Repairs on All Tankless Units
Continuous flow, on-demand and hybrid water heater service
- Lasting Restoration of Hot Water Delivery
Get back to clean, on-demand hot water ASAP
- Trusted Techs + a Workmanship Warranty
Certified work plus a warranty on parts and labor
- Get Same Day Service!
- Family Owned and Operated
- Fix Your Issue 100% Guaranteed

Tankless Water Heater Repair, On Your Terms
Keller deserves better Tankless Water Heater Repair solutions
Cold water sandwich, ignition and scaling issues disrupting your on-demand hot water delivery? Trust Mother Modern Plumbing for expert tankless water heater repair service in Keller, TX that restores your system’s peak efficiency.
Need repairs right now? Call Mother 7 days a week to schedule Keller tankless water heater repair service- we’ll have a plumber to you within 24 hours.
Mother’s team of licensed technicians cares about modern, tech-driven solutions for Keller home plumbing. Our constant training and staff education ensures you’ll get back to reduced energy bills and continuous hot water fast.
Your tankless repair service begins with an expert consultation based in our deep knowledge of modern tankless systems. We address and resolve your system’s issue with one fixed-price quote, then stand behind our work with a 12-year warranty on parts and labor.
Expert tankless water heater repair in Keller, TX
Here’s what to expect when you call Mother for tankless water heater repair service in Keller:
- Direct expertise and honest quotes. Your licensed plumber arrives within 24 hours with specific knowledge about your brand and type of tankless unit. Your appointment includes expert diagnostics, transparent fixed-rate pricing and no hidden fees.
- Specific knowledge of tankless components. We go the extra mile to provide solutions for the specific components of your on-demand system- from spark electrodes to IoT sensors to responsive intake valves.
- Advanced repair options. From more common issues with heat exchangers and flame rods, to complex ones like ignition failure to intricate electrical issues, we’re deeply trained to solve these issues safely, and with confidence.
- A blueprint for future success. Smart repairs include suggestions for proactive maintenance. We set you up for long-term water heater efficiency with advice on filter and vent cleaning, air intake maintenance and descaling your tankless unit.
We repair every type of tankless and on-demand water heater
We blend decades of local expertise with constant education on advancements in tankless water heater technology. Our plumbers provide the single best solution to any issue facing every style of tankless or hybrid system:
- Natural gas tankless water heaters
- Electric on-demand water heaters
- Instant-on water heaters
- On-demand water heaters
- Combination boilers
- Hybrid water heaters
- Continuous flow water heaters
High tech service. Even higher standards. Say hello to Mother Modern Plumbing.

Fast Tankless Water Heater Repair: within 24 hours
If your tankless water heater in Keller isn’t keeping up, our plumbers are here to help. We specialize in Tankless Water Heater Repair to troubleshoot and resolve the issue efficiently. For homes with hard water, we recommend Tankless Descale to protect your system and extend its life.
Six common tankless water heater problems in Keller, TX
Our technicians encounter more and more on-demand, tankless hot water heater systems in local homes. Here are the 6 most common reasons Keller residents call us for repairs:
- Persistent error codes
- No hot water (or reduced hot water flow)
- "Cold water sandwich" (bursts of cold water between hot water)
- Inefficient heat pump operation
- Tankless system won't ignite
- Technical control board issues
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Proudly helping with Tankless Water Heater Repair in Keller
From Hidden Lakes to Marshall Ridge, we provide specialized tankless water heater repair throughout Keller's 60+ neighborhoods. Whether you're in Bourland Oaks, Forest Lakes, Cielo, or Tuscany, our local technicians deliver prompt tankless water heater services including replacement, maintenance, descaling, and installation of instant hot recirculation pumps. Residents of Highland Oaks, Twin Lakes, Mount Gilead Ranch, and Sanctuary trust our expertise for comprehensive water heater solutions, from routine flushes to Floodstop auto-shut off installations.
What are the most common tankless water heater repair types?
A majority of tankless water heater repairs (especially in DFW) involve one of these six key issues:
- Descaling due to mineral buildup
- Ignition system issues (blocked sensors)
- Blockages of vents
- Faulty flow sensors
- Leaks from a damaged heat exchanger or valves
- Damaged gas flexes and closed valves (gas units)
How often should I descale my tankless water heater?
Perform tankless water heater descaling once every 6-12 months in most areas to eliminate mineral buildup in the system.
If you live in areas with extremely hard water- such as Dallas-Fort Worth- consider decaling your on-demand hot water heater every 6-8 months (roughly twice a year). Limescale is particularly hard on tankless units in our area.
How often should I replace the inlet filter on a tankless water heater?
This depends on the water quality in your area and your personal water usage rate. Most homeowners should replace the inlet filter every 6 months.
If your home uses a lot of water, or if you live in regions with extremely hard water (like North Texas), check your inlet filter every 4 months. Increased use and excessive mineral scaling have significant impact on the filter's lifespan.









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