Problems Common To Tankless Water Heater Repair | Irving, TX

Problems Common To Tankless Water Heater Repair | Irving, TX

Photo By Minerva Studio at Shutterstock

In recent years tankless water heaters have increased in popularity as they are very energy efficient and simple to repair and maintain. With a tankless water heater, you only heat the water you need, and as you don’t need to store a tank of water, your home, you’ll eliminate the risk of flooding. While tankless water heaters may seem like the perfect solution, they do still need ongoing maintenance as they are susceptible to some common issues. A tankless water heater repair service can help you fix any problems you’re having with your system.

If you live in Irving, TX, or the surrounding area and are searching for tankless water heater repair, you may like to contact bluefrog Plumbing + Drain. The company is able to service, maintain and repair all types of tankless water heaters. They are also available for other types of plumbing work and can be relied upon in an emergency.

This article will look at some of the most common problems with tankless water heaters. We’ll help you decide whether you need to call on the help of a professional tankless water heater service.

Tankless Water Heater Repair

Let’s look at some of the most common reasons that homeowners call in the help of a tankless water heater repair service.

Faulty Energy Supply

One of the most common problems homeowners have with their tankless water heater is that it won’t turn on or seems to have just stopped working. This may be because the energy supply is off for various reasons. There may be issues with the electrical system, perhaps there has been a short circuit, or the circuit breaker has tripped. Alternatively, there may be a malfunction in the ignition system, such as problems with the electrode.

If you have a tankless water system that uses gas, the pilot light may have blown out, or there could be another issue with the gas flow. The gas pressure may not be as effective as it should be, or your home’s gas supply may have become interrupted. Your system may have a closed gas valve.

If you have any of the above problems, it’s best to call in the help of a plumber that offers tankless water heater repair.

Mineral or Sediment Build up

Depending on the area you live in, your home’s water supply will contain some dissolved sediment and minerals. When you use your tankless water heater, some of these sediments and minerals will remain in your plumbing system. Over time they will accumulate in your heating system and start to cause problems. You may find that sediment and minerals begin to discolor your water, and it may even start to smell bad. In severe situations, an extreme mineral build up will occur, and this can damage the heat exchanger.

To get rid of mineral and sediment build-up, you can regularly run water through your system to flush it out. How much mineral build up your system has will depend on factors such as the water temperature and how many minerals or sediments are dissolved in the water supply. If your system is prone to sediment build up and you use it at higher temperatures, you’ll need to flush it out more regularly.

Vent or Exhaust Blockage

Unless your tankless water heater is run on electricity, your system will need plenty of fresh air, provided by the vents for combustion. The Exhaust also requires venting. If the vent or exhaust has become blocked, the air supply will be cut, and this can cause issues for your water heater. A Blocked air supply can result in ignition issues or combustion problems. This can lead to overheating and failure of your system.

If your system has blocked vents or exhaust issues, it’s best to call in the help of a tankless water heater repair service who can unblock the system.

Overloaded System

Another common reason that your tankless water heater may be experiencing issues is due to system overload. Each water heater will have a specific capacity of water that its able to heat in a certain time. If you try to use more hot water, the system will become overloaded as it won’t be able to handle the volume.

Your water heater can become overloaded if you have a system installed that isn’t big enough for your household. If you try to run multiple appliances that require hot water, the system can become overloaded.

When you have an overloaded hot water system, your home won’t have enough hot water, and the system is likely to shut down. It’s best to aim to understand the capacity of your water heater so that it doesn’t become overloaded.


Tankless water heaters are generally less likely to corrode than systems with a tank as they don’t have to heat water all the time. You should, however, be aware that corrosion is possible, especially around the gas burner. When the gas burner corrodes, your system will likely suffer either from a blockage or a gas leak. Corrosion is also possible in the heat exchanger, and this can cause the system to overheat.

A tankless water heater repair company can remove corrosion and replace any parts that are affected. If the damage is too severe and your system is aging, you may be better off having your hot water system replaced.


Overheating is another common issue that can affect tankless hot water heaters. There are many reasons that overheating may occur. The main reasons are if the system has been overused or if you use the water temperature on too high a setting. Other things that may cause overheating include a malfunction that can restrict the water supply to the system or a sensor malfunction. In some cases overheating is also caused by something blocking the air vents.

bluefrog Plumbing + Drain, Tankless Water Heater Repair

If you live in Irving, TX, or the surrounding area and are searching for tankless water heater repair, don’t hesitate to contact bluefrog Plumbing + Drain of North Dallas. The company can service, maintain and repair all types of tankless water heaters.

Plumber Highland Park, TX

Call Now For
Emergency Service!


bfpad Proactive Protection ProgramTM

Many of our customers are so happy with our service that they become a bfpad Proactive Protection Program™! Contact us to learn more.

  • Priority Service
  • Free Annual Plumbing Evaluation
  • 15% OFF Service