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What Kind Of Problems Might You Encounter With Tankless Water Heaters?

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More people in your neighborhood are opting for tankless water heaters as they have good energy efficiency and lasting durability. However, like any appliance, they are prone to issues that can arise throughout the lifespan of the unit. While the homeowner can tackle some of these problems, it is always advisable to call a licensed plumber to resolve any problems with your tankless water heater. With that said, what kind of issues could you encounter with your tankless water heater?

Hard Water

Hard water can frequently lead to mineral buildup and clogs inside your tankless water heater. The accumulation of minerals may damage your unit, reduce its efficiency, and shorten its lifespan. Regularly cleaning your tankless water heater can help prevent this buildup. However, if the minerals have already accumulated, a professional plumber may be needed to flush the system and resolve the issue.

Sediment Buildup

Like hard water, sediment buildup can also occur in your tankless water heater. Sediment buildup can result in reduced unit efficiency and clogs over time. Regular maintenance and cleaning can alleviate the risk of sediment buildup. 

Ignition Issues

A faulty ignition can cause your tankless water heater to stop working suddenly. A problematic ignition can happen for several reasons, such as problems with gas pressure, loose electrical connections, or a malfunctioning gas valve. Ignition problems can be dangerous and require immediate attention from a licensed professional plumber to resolve.


Leaks can be a frustrating issue, causing water damage to furniture, walls, and floors and consuming additional water usage. Leaks may occur due to loose fittings, damaged filters, or excessive water pressure. Attempting a do-it-yourself fix may not be sufficient (or safe in some situations), so it's best to hire a professional plumber who will be glad to handle it for you.

Improper Ventilation

Tankless water heaters require proper ventilation and can build up carbon monoxide inside your home if the ventilation is not functioning correctly. Poor ventilation may be caused by unprofessional installation, so always hire a licensed professional plumber to install a tankless water heater unit.

What's Next?

While tankless water heaters do provide exceptional efficiency and longevity, being aware of the issues presented can equip you for proper maintenance and prevention. It's important to remember that any suspected problems that may arise with your tankless water heater should be handled by a licensed and experienced plumber, so reach out to a tankless water heating system repair professional in your location today.