Tankless Water Heater Repair in Arlington

- 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
Arlington deserves better Tankless Water Heater Repair solutions
If your Arlington home's hot water supply is inconsistent, Mother Modern Plumbing's deep plumbing expertise can help you find the perfect solution.
Have you noticed your hot water running out quickly, or perhaps it's not getting as hot as it used to? Are you experiencing any fluctuations in water temperature while showering or using appliances?
Mother Modern Plumbing is a high-trust plumbing company serving the Dallas–Fort Worth area. We focus on clean, fast, and permanent repairs. Our team has a combined 98 years of plumbing experience. We're committed to providing you with a clear, calm, and professional service.
With flat-rate pricing and expert plumbers, you can trust Mother Modern Plumbing to bring clarity, reliability, and professionalism to your tankless water heater needs.
Here are some common signs that you may need a tankless water heater repair:
- Inconsistent water temperature
- Decreased hot water supply
- Unusual noises from the unit
- Error codes on the display panel
- Leaks around the unit
Don't let a faulty water heater disrupt your comfort, contact us today to schedule an appointment with the plumbing experts who prioritize your peace of mind.

Fast Tankless Water Heater Repair: within 24 hours
A malfunctioning tankless water heater in Arlington, TX can disrupt your home’s daily routine. Our team provides fast, expert Tankless Water Heater Repair to restore reliable hot water. We also offer Tankless Descale to prevent hard water buildup that can damage your system over time.
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Proudly helping with Tankless Water Heater Repair in Arlington
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.
