How to Tell If Your Tankless Water Heater Needs Repairs

Posted on

Tankless water heaters are becoming increasingly popular thanks to their energy efficiency and compact design. They take up less space than traditional water heaters and only heat water on demand, which can save you a lot of money in the long run. However, like any appliance, tankless water heaters can have issues over time. Knowing when to call for repairs can save you from a lot of headaches and expensive repairs down the line. Here's how to tell if your tankless water heater needs repairs.

Inconsistent Water Temperature:

If you notice your water temperature fluctuating when using your tankless water heater, it may be time for repairs. Inconsistent water temperature is often a sign that something is wrong with the heating element, which may require professional attention.

Strange Noises:

Tankless water heaters should operate quietly, so if you hear any unusual sounds like banging, clanging, or hissing, it might be time for repairs. These sounds are often signs of mineral buildup or a malfunctioning part. If left untreated, these issues can lead to a full system breakdown.

Reduced Water Pressure:

If you notice reduced water pressure when using your tankless water heater, it may be time to call for repairs. Low water pressure can be a sign of a blockage somewhere within the system, or it could be a sign of mineral buildup that's preventing water flow. In either case, repairs may be necessary.


Leaks are never a good sign, and tankless water heaters are no exception. If you see any water pooling around your unit or notice drips coming from the pipes, you should call for repairs immediately. Leaks can cause serious damage to your property and can be a sign that something is seriously wrong with the system.

Error Codes:

Most modern tankless water heaters come with a digital display that shows error codes if something is wrong. If you see an error code on your unit, look up the code in your owner's manual or consult with a professional. Different codes can mean different things, but in general, if your unit is displaying an error code, repairs will be needed to get it back up and running.

Tankless water heaters have a lot of benefits, but they do require some maintenance from time to time. The best way to prevent repairs is to take care of your system by flushing it regularly and having it inspected once a year by a professional. However, if you notice any of the signs listed here, don't wait to call for repairs. Small issues can quickly turn into large and expensive problems if left untreated. If your tankless water heater is in need of repairs, call a water heater repair service today.