Water – What failure modes are there for electric water heater elements

water-heater

What would be the cause of the elements to go out in my electric water heater?

My wife is convinced that it's because the water heater hasn't been drained/flushed in the past 3 years.

I was also told it was an issue with over use or possibly just old age (installed in 2004).

So for future reference so I can prevent this, what could cause them to go out?

Best Answer

There's a few problems. The most common is the tank rusting out. (This can usually be prolonged if you replace the sacrificial anode regularly, but it won't prevent it forever.) The second is sediment. If you have a lot of rust in your pipes or water with a lot of sediment, it can build up in the bottom of the tank. It can also build up on the elements.

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