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How long does a hot water cylinder last NZ?


Hot cylinders have been here for a long time. They’re one of the most common forms of hot water heating system in New Zealand that’s proven to be reliable and cost-effective. Hot water cylinders tend to last for 8 to 15 years, depending on the type and quality of the unit.

However, hot water cylinders still need adequate and regular maintenance despite the expected long life. No matter what kind of water heater you have, if you don’t take care and check its condition regularly, it can spell early doom for your equipment. 

The unfortunate reality is some hot water cylinders last shorter than they should. After five years, some families might have to get rid of their water heaters. On the other hand, others might be lucky enough to keep their units running for 15 years.

Making the time to monitor the status of your cylinder makes the difference between having to buy a new heater right after your warranty runs out and being able to keep it for a few more years.

So, how can you keep your hot water cylinder running for a longer time? Here are some things you can do:

  1. Check the Anode Rod. Anode rod corrosion causes hot water cylinder failure. To prevent this, check its condition regularly, Replacing if necessary.
  2. Remove Limescale. Limescale can cause your water heater to lose efficiency. Flushing your heater with pure white vinegar will remove limescale buildup.
  3. Flush out Sediments. Hot water cylinders need annual flushing to clean out the tank’s bottom sediment.

Of course, if you’re unfamiliar with working with hot water cylinders, you don’t need to force yourself. We always recommend contacting a reputable hot water cylinder specialist like Hot Water Cylinders NZ for any service or repair difficulties. 

Reach us today at 0800 4 CYLINDERS or 0800 429 546.