Hot Water Heating Tips

HOT WATER

Hot water is another major power user. Here are some ways to use less without sacrificing the comfort of a warm shower.

TEST YOUR SHOWERHEAD

Place a 10L bucket under the flow. If it fills in under a minute, it's using more water (and power) than needed.

swap your showerhead

Efficient showerheads reduce flow without sacrificing pressure. Look for ones with a 9L/min or less rating.

FIX DRIPPING TAPS

Even a small leak wastes hot water (and energy). Often, it's just a washer that needs replacing.

TRY A TAP AERATOR

A flow control aerator can help reduce the amount of water you use while still giving good pressure.

SET MIXERS TO COLD

Otherwise hot water flows into the pipes automatically – even if you’re not using it.

FILL THE SINK

When shaving or washing dishes, avoid leaving the hot tap running – fill the sink instead.

COLD WASH LAUNDRY

Cold water washing uses much less energy and can be gentler on clothes.

RUN FULL LOADS

Wait until your washing machine or dishwasher is full. It saves water, hot water, and energy.

USE ECO MODE

If your dishwasher or washing machine has an eco-mode, use it!

WRAP YOUR CYLINDER

If your hot water cylinder is older than 2002, add a wrap and insulate the pipes. Always check with a professional if you’re not sure.

SET YOUR CYLINDER TO 60°C

This is the ideal setting - hot enough to stop bacteria, but not hot enough to waste power.

CHECK FOR LEAKS

Any signs of water around the cylinder or pipes? Call a plumber.

Power saving tips on this page are based on tips from genless.govt.nz

HEATING YOUR HOME

Heating is one of the biggest power users at home, especially in winter. These tips can help you stay warm while using less energy.

STAY WARM FOR LESS

GENERAL TIPS

There are lots of small ways to reduce energy use day to day – even from appliances and tech you might not think about.

EXPLORE MORE TIPS