How long does a tankless water heater last? #LifespanGuide

 

Endless hot water and up to 30% reduction in monthly energy cost are the two biggest advantages tankless water heaters have over storage tank units.

At the same time, tankless water heaters have a higher upfront cost (often up to $ 1,000 USD and up - see our cost guide here for more information ). This is because the systems themselves are more expensive, and so is their installation .

In other words: It takes years for the investment to pay off. Therefore, it is very important that a tankless water heater last for a long time.

But how long does a tankless water heater last?

Content:

Do tankless hot water heaters last longer than tank-based heaters?

Why do tankless water heaters have a longer service life?

Lifespan: How long do tankless water heaters last?

Electric or gas, the life expectancy of a tankless water heater is between 15 and more than 20 years, as long as the operation and maintenance guidelines are followed. Many of the parts are also easily replaceable if necessary.

Another important factor is the quality of the water, which in this case is determined mainly by hardness - think of the scale that sticks to the heating elements - and the sediment content.

Pro Tip: Delineate Your Tankless Water Heater About Once A Year

Evicting your tankless water heater annually helps ensure that there is no scale buildup around the heating elements, which would not only increase your energy bills, but could also cause irreparable damage, shortening the life of the system.

Do tankless hot water heaters last longer than tank-based heaters?

Traditional tank-based heaters have a useful life of 12 years or so. If you do the math, a tankless water heater lasts almost twice as long on average.

Why do tankless water heaters have a longer life expectancy?

The biggest problem with tank water heaters is corrosion due to the moisture that they are exposed to 24 hours a day, 7 days a week. Some parts, like the heating elements, can be replaced, but once the tank itself has failed, it is finished and you have to buy a completely new system.

And again, the mineral content and overall quality of the water do their part, as they can influence the rate of corrosion.

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