Frequently Asked Questions

Have questions about our plumbing services? Check here!

If you don’t find the information you’re looking for, feel free to contact us directly – we’re here to help!

What are your rates?

For detailed information on our rates, see our Pricing page.

Are you a fully qualified plumber?

Yes, fully qualified under the Plumbers, Gasfitters and Drainlayers board.

Do you do emergency plumbing after hours?

Yes we do, see our fees regarding this on our Pricing page.

Why does my hot water cylinder overflow?

When water is heated it expands – this is called thermal expansion. Hot water cylinders are designed to relieve expanded hot water through either an open vent on the roof, or via a relief valve and pipe to an outside wall or drain. If hot water has been used, it is normal to see water coming out of the vent pipe, however, if this is a continual drip then the hot water cylinder valves need either servicing or replacing.

What temperature should my hot water be?

Domestic houses should have 55 degrees Celsius coming out of the hot taps. The exception to this is for child care and aged care facilities, where it should be set to 45 degrees Celsius or less.

Why has my water bill increased?

There are many possible reasons, but ones you can check before calling a plumber are:

  • Toilet slowly overflowing into the pan.
  • Hot water cylinder valves consistently dripping.
  • A damp patch of grass or concrete may indicate a potential water main leak.
What do I do if my toilet won’t stop running water?

You will need to turn off the water to the toilet. There will be a water supply valve connected to the toilet that is located either on the back wall next to the toilet, or in the cistern. You will need to lift the cistern lid to expose the valve and turn it.

What should I do about a burst or leaky pipe?

As soon as you notice a burst pipe, turn off the water from the house at the water meter. We also recommend turning off your electricity to avoid any risk of electrocution. Call a plumber as soon as possible.

Why do I run out of hot water?

Either you’re using more than what can be stored, or you may have a technical issue with the element or thermostat.

Why has my water pressure decreased?

The two most common issues are that your pump has lost its pressure, or there is a filter somewhere that needs attention.

Can you install waste disposal units?

Yes, we install all types of waste disposal units. Sometimes they jam under heavy loading to prevent the motor from burning out.

Some brands have a reset button underneath the unit that can sometimes fix it. If it’s leaking from underneath the unit and is older than ten years old, then it is highly likely it will need to be replaced.

Can I unblock my own sink?

In minor situations there may just be a small blockage in the trap located under the sink. These are designed to be taken apart for cleaning from time to time. If drain cleaner or a plunge hasn’t done the trick, then you will need to call a plumber.

Why should I install a temperature valve to my hot water cylinder?

The building code requires that the temperature of hot water delivered to sanitary fixtures used for personal hygiene purposes such as baths, showers and basins should not exceed 45 degrees C for elderly care facilities, schools, early childhood centers, and 55 degrees C for all other buildings.

Why is my water pressure so high?

This is a common issue that can damage not only your pipework, but also your plumbing fixtures in the house, such as your hot water cylinder, toilet, taps and mixers. It can also significantly increase your water bill. Installing a limiting valve will solve these issues and reduce the likelihood of pipes bursting behind your walls.

Is it normal for pipes to rattle?

Rattling pipes, also known as water hammer, can occur when pipes behind the wall or under the building are unsupported. You might notice this when you turn the water on and off at a tap and suddenly hear the pipes rattling around. Over time this can cause damage to the pipework, or worse – a burst pipe. Call Waitakere plumbing today to see how we can help with this issue.

How often should I change my water filter?

This depends on how often the filter gets used, and the manufacturers recommendations which are often on the side of the filter stating for example an annual filter change, or every six months. Its important to follow these guidelines as it could be a potential health hazard, and not to mention the water pressure could get affected if not changed routinely.