Mains Pressure vs Low Pressure

A lot of older homes in New Zealand will have a low pressure hot water system so here are some ways for you to check:

1)     Is there a noticeable difference in pressure between your hot and cold taps? Is the cold tap more powerful than the hot? If yes, there is a high chance your system is low pressure.

2)     Check your hot water cylinder for labels. Low pressure cylinders may not have any identifiable labels but mains pressure generally have a large label.

3)     Can you see a vent pipe poking out of your roof or over a gully trap? A mains pressure cylinder is closed-vented so you won’t find a vent pipe.

A bathroom renovation is a perfect opportunity to upgrade an old low pressure cylinder to mains pressure.

Advantages of mains pressure:

  • A large proportion of single lever tapware in today’s market are only suitable for mains pressure.
  • Water is delivered to the whole house at the same pressure so it is less affected by multiple water demands.
  • Reduces temperature variations in the shower which is an inherent problem with most low pressure systems. E.g. hot water turning cold in the shower when another tap is turned on.

If you are wanting to upgrade or need some more information Chesters can help you find a registered plumber to help with further advice and installation so contact your nearest branch today.

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