Two Reasons Tankless Water Heaters Often Fail Before They Should

Posted on: 29 May 2020


The tankless water heater has been a welcome change for homeowners who have relied on tank-style water heaters. The efficiency of these units makes them highly desirable, but tankless water heaters do require some maintenance. The water heaters can last for several years if they are taken care of. Here are a could of reasons you may need tankless water heater repair due to unit failure long before you really should be having problems.

1. The water heater does not get flushed on a regular basis as it should. 

A tankless water heater should be flushed about every six months if you want it to actually last as long as it is supposed to. Flushing the unit is a relatively simple process and it doesn't take that long to do, but it is one of those maintenance tasks that tend to get put off. Flushing the tankless water heater will: 

  • Get rid of any sediment inside the lines 
  • Clear out the filters inside the water heater 
  • Remove scaly buildup from temperature sensors 
  • Clear buildup inside the inline filter housing 

If all of the gunk inside the water heater is not flushed out, you can run into all kinds of issues. For example, you may have problems getting water that is actually the temperature that you want or you may have issues with adequate water flow. These issues can seem relatively minor, but they also are forcing the water heater to work extra hard. Unfortunately, this can lead to failure of the unit and you may have to call in a professional for tankless water heater repair even if you have a unit that is rather new.

2. The heating elements are not replaced when they go bad. 

Your tankless water heater, just like your tank-style water heater, can have more than one heating element. When one element goes bad, you will still have hot water; it just won't be as hot as usual. It is quite common for one element to go bad and the homeowner to delay replacing the bad element. Unfortunately, this puts undue operational stress on whatever elements are left, which means they will fail sooner than usual.

Not to mention, a tankless water heater that has multiple heating elements is going to work harder when just one of those elements goes out. Complete system failure is possible if the unit is forced to function with fewer elements than what the unit is designed to accommodate.

For more information, contact a tankless water heater repair service.