Tankless Water Heater Repair: Everything You Need to Know

Are you experiencing problems with your tankless water heater? If so, you’re not alone. Tankless water heaters are popular for their energy efficiency and cost savings, but they do require maintenance and repair from time to time. In this article, we will provide you with everything you need to know about tankless water heater repair.

Tankless Water Heater Repair: A Comprehensive Guide

Tankless Water Heater Repair

Tankless water heaters are becoming more and more popular as homeowners look for ways to save money on energy bills. These units are more efficient than traditional water heaters because they only heat water when it’s needed, rather than keeping a large tank of water heated at all times. However, like any appliance, they can break down over time.

What Are Tankless Water Heaters?

A tankless water heater is a device that heats water on demand. Rather than storing hot water in a tank, a tankless water heater heats water as it flows through the unit. This means that you never run out of hot water and you don’t waste energy heating water that you’re not using.

Common Tankless Water Heater Problems

Like any appliance, tankless water heaters can experience problems over time. Here are some of the most common problems that homeowners experience:

  1. No hot water
  2. Low water pressure
  3. Error codes on the display
  4. Leaking water
  5. Mineral buildup
  6. Ignition failure

Tankless Water Heater Repair: What You Can Do

Tankless Water Heater Repair

If you’re experiencing problems with your tankless water heater, there are a few things that you can do before calling a professional:

  1. Check the power source: Make sure that your tankless water heater is getting power.
  2. Check the water supply: If you’re not getting hot water, make sure that the water supply valve is turned on.
  3. Check the air intake filter: A dirty air intake filter can cause your tankless water heater to malfunction.

When to Call a Professional

If you’ve checked the power source, water supply, and air intake filter and your tankless water heater still isn’t working properly, it’s time to call a professional.

Tankless Water Heater Repair
  1. You’re not comfortable performing repairs yourself
  2. You’ve already tried troubleshooting the problem and it still persists
  3. You’re experiencing a major problem like a water leak

Choosing a Professional

When choosing a professional for your tankless water heater repair, it’s important to choose someone who is experienced and qualified. Look for a company that specializes in tankless water heater repair and has good reviews from previous customers.

How Much Does Tankless Water Heater Repair Cost?

The cost of tankless water heater repair varies depending on the extent of the problem. Minor problems like a dirty air intake filter may only cost a few dollars to fix, while major problems like a leaking water heater may cost several hundred dollars. It’s best to get a quote from a professional before agreeing to any repairs.

Preventative Maintenance

The best way to avoid costly tankless water heater repairs is to perform regular preventative maintenance. This includes flushing the system to remove mineral buildup and cleaning the air intake filter. It’s also a good idea to have a professional inspect your tankless water heater once a year to identify any potential problems.

FAQs about Tankless Water Heater Repair

  1. It’s recommended that you have your tankless water heater serviced at least once a year to ensure it’s working properly and to prevent any potential problems.
  2. How long does a tankless water heater last? Tankless water heaters typically last for around 20 years with proper maintenance and care. However, the lifespan can vary depending on usage and other factors.
  3. Can I perform my own tankless water heater repairs? While some minor repairs can be performed by homeowners, it’s generally recommended to leave major repairs to a professional. Attempting to repair your tankless water heater on your own can be dangerous and could cause further damage to the unit.
  4. What should I do if my tankless water heater is leaking? If your tankless water heater is leaking, you should turn off the power supply and water supply to the unit immediately. Then, call a professional to come and assess the problem.
  5. How can I prevent mineral buildup in my tankless water heater? To prevent mineral buildup, it’s important to flush your tankless water heater regularly. This can help to remove any sediment or minerals that have accumulated in the unit.
  6. Yes, a tankless water heater can be repaired or replaced if it’s no longer functioning properly. A professional can help you determine whether repair or replacement is the best option for your specific situation.


In conclusion, tankless water heater repair is an important topic for homeowners who want to save money on energy bills and enjoy a steady supply of hot water. By understanding the common problems that can occur with tankless water heaters, knowing when to call a professional, and performing regular preventative maintenance, you can help to ensure that your unit functions properly and lasts for many years to come.

Remember, if you’re experiencing any problems with your tankless water heater, it’s important to call a professional right away. Don’t attempt to perform repairs on your own, as this can be dangerous and may cause further damage to your unit.