This information is based from Consumer NZ website in 2025 and based on 25c/kwh.    For more info visit https://www.consumer.org.nz/articles/appliance-running-costs#article-how-much-power-does-my-appliance-use

A  15 Minute Shower  ≈ $1  (so 5 people have a 15 min shower each day for a week = $35, that’s $140 Month)

4.5kw Heatpump running for 1 hour  ≈ 35c            2400kw heater to warm up a room   60c per hour

1200w thermostat heater keeping room warm (after warming it up)    30c per hour

Dishwasher per load   25c            Hand washing 15 litre sink filled twice with hot water and rinsing    30c

Cold wash top loader per load   5c                 Cold wash front loader per load   6c

Warm wash top loader per load  31c                Warm wash front loader  per load   19c

Small chest freezer per day   15c               Fridge Freezer per day    96c

Oven to cook a roast   $1                 Air fryer for 30 min   12c              Cooktop large element per hour   55c

Kettle per boil   4c              Toaster per load    2c               Microwave per plate    2c

3.5kg Clothes dryer per load   50c               Vacuum per hour   38c               Game console per hour   5c

Bathroom extractor fan per hour    <1c              Rangehood  per hour   4c

Please use your heatpump when it gets cold.  They are cheap to run and keeping warm helps prevent you from getting sick.  Choose a temperature that suits you and leave it set on that.  Once it reaches that temperature it will stop heating (so no electricity being used) until the room cools down and then it will start again.  To save power only use the heatpump when that room is occupied.