Plumbwell New Plymouth & Auckland - Plumbers, Solar, Wood Fires
Plumbwell New Plymouth & Auckland - Plumbers, Solar, Wood Fires

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Plumbwell New Plymouth & Auckland - Plumbers, Solar, Wood Fires
 

Frequently Asked Questions

Why does my hot water cylinder sometimes overflow?

Heated water expands, this is called thermal expansion.

When water is heated from cold the volume of water can increase by as much as 3%, so  this could mean up to 5.4L, if your home is fitted with a 180L hot water cylinder (HWC).

Therefore your HWC is designed to release this expanded hot water through an open vent pipe on the roof or a relief valve and pipe to an outside wall or drain.


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