What You Need To Know About Tankless Water Heater Maintenance

Have you been wondering about tankless water heater maintenance and its importance? As a homeowner, it’s important to understand the ins and outs of your home’s appliances, including your tankless water heater.

In this article, we’ll discuss everything you need to know. Ready? Let’s go.

The roar of a traditional water heater as it comes to life, gurgling and groaning through another cycle, is quite familiar to many households. However, the rise of tankless water heaters is transforming the way we think about hot water.

Tankless water heaters, also known as on-demand water heaters, are sleek, energy-efficient, and space-saving. They offer a modern solution to daily home comfort.

But, as with any complex system, tankless water heaters require maintenance to secure their efficiency and durability. This guide is for homeowners who want to learn more about why and how to maintain their tankless water heaters effectively.

What You Need To Know About Tankless Water Heater Maintenance

Understanding Tankless Water Heaters

Tankless water heaters provide hot water on demand without the need for a storage tank. This is a stark contrast to traditional water heaters, which keep a large volume of water hot at all times, using energy even when hot water isn’t being used. The advantages are clear:

Energy Efficiency

Tankless water heaters are typically more energy-efficient than traditional ones. They only heat water as needed, which can lead to significant savings on energy bills.


Traditional water heaters are bulky and space-consuming. Tankless systems can be wall-mounted, freeing up valuable space in your utility room or basement.


When properly maintained, tankless units can have a longer lifespan than traditional water heaters. This is because they don’t suffer from the same corrosion that can occur in storage tanks.

The Importance of Regular Maintenance

Despite the many benefits, neglecting tankless water heater maintenance can lead to issues such as reduced efficiency, inconsistent water temperatures, and even system failure. More specifically:

  • Mineral Buildup: Hard water is notorious for its high mineral content, notably calcium and magnesium, which can accumulate inside heating systems over time. This buildup restricts water flow, significantly reduces system efficiency, and can lead to erratic heating patterns. To prevent these issues, it’s important to regularly check and clean the system to remove any mineral deposits.
  • Dirty Filters: Filters play a crucial role in maintaining the cleanliness and efficiency of heating units. However, over time, these filters can become clogged with dust, dirt, and other particulates, limiting airflow and potentially causing the unit to shut down as a safety measure. This situation can leave you without heat when you need it most. Regular cleaning or replacement of filters is essential to prevent such problems.
  • Overall Wear and Tear: Like any frequently used appliance, heating systems are subject to wear and tear. The heating element, along with valves, thermostats, and other components, can degrade over time, especially without proper maintenance. This degradation can lead to inefficient heating, more frequent repairs, and the potential need for premature replacement of the entire system. To extend the life of your heating system, regular servicing by a professional is recommended.

DIY Maintenance Tips

You can perform some maintenance tasks yourself to keep your tankless water heater running smoothly.

Flushing the System

Flushing the system is crucial to removing mineral buildup. This process involves shutting off power and water to the unit, then connecting a pump and specific cleaning solution to the system to circulate and flush it out. This should be done at least once a year, but the frequency may vary depending on the hardness of your water.

Checking and Cleaning Filters

The inlet water filter should be checked and cleaned or replaced regularly. This simple task can be done with basic tools, ensuring proper water flow to the unit and preventing particles from damaging the internal components.

Testing Temperature and Pressure

Check the unit’s temperature and pressure relief valve periodically to ensure it’s working. This valve is a safety feature that releases water, which could be scalding hot if the temperature or pressure inside the tank reaches unsafe levels.

Professional Maintenance Services

While DIY maintenance is essential, certain tasks are best left to professionals.

Considerations for Professional Service

If you’re not comfortable with DIY tasks or encounter complex issues, it’s time to call a professional. Additionally, professional maintenance can include a thorough system check to catch any potential problems early.

What to Expect During a Professional Visit

A technician will conduct a thorough inspection of your tankless water heater, including a larger-scale descaling process to remove mineral buildup. They will also check for gas leaks, test the combustion chamber, and verify proper flue and ventilation.

Cost and Benefit Analysis

The cost of tankless water heater maintenance varies depending on the service provided. A simple DIY filter cleaning is relatively inexpensive, while a professional descaling and system check is more expensive. However, considering the potential savings on energy bills and the extended lifespan of your unit, maintenance is an investment.

The convenience of a tankless water heater comes with the responsibility of regular maintenance. By following the DIY tips and understanding when to call for professional assistance, you can ensure that your system works reliably and efficiently for years to come.

Homeowners are strongly encouraged to maintain their tankless water heaters regularly. By doing so, you’ll not only avoid potentially costly repairs but also benefit from the increased efficiency and durability that tankless systems promise.

Take action today to secure your investment in a tankless water heater. Whether you’re ready to DIY or prefer to schedule a professional check, prioritizing maintenance will keep your hot water flowing consistently, positively impacting your comfort and your home’s energy footprint.

For The Best Tankless Water Heater Maintenance, Reach Out To Our Team Today

Our team of experienced technicians is here to help you with all your tankless water heater maintenance needs. Whether it’s a routine check or a complex descaling procedure, we have the expertise and tools to ensure your system runs smoothly and efficiently. Call our team today at 972-833-8660, and we will take care of the rest!