Tankless Water Heater Repair in Addison

- 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
Addison deserves better Tankless Water Heater Repair solutions
If your Addison home's hot water isn't what it used to be, Mother Modern Plumbing's deep plumbing expertise is here to help with reliable tankless water heater repair.
Have you noticed a sudden lack of hot water? Have you noticed your water taking longer to heat up than usual? Are you hearing any unusual noises coming from your water heater?
Mother Modern Plumbing has proudly served the Dallas-Fort Worth area with expert plumbing solutions, and our licensed plumbers have a combined 98 years of experience. We are committed to transparent, honest service, ensuring that your tankless water heater repair is handled with precision and care.
With Mother Modern Plumbing, you're choosing a team that values quality and clarity, with flat-rate pricing and no hidden fees.
Here are some common signs that you may need a tankless water heater repair:
- Inconsistent water temperature
- Water not getting hot enough
- Leaks around the unit
- Error codes on the display
Don't let a faulty water heater disrupt your comfort; contact Mother Modern Plumbing today, and let our experienced team restore your hot water with confidence.

Fast Tankless Water Heater Repair: within 24 hours
In Addison, tankless water heaters are known for their efficiency—until they stop working properly. Our licensed plumbers provide reliable Tankless Water Heater Repair to get your hot water back quickly. We also recommend Tankless Descale to prevent mineral buildup and ensure long-term performance.
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Proudly helping with Tankless Water Heater Repair in Addison
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.
