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Contracting Capabilities

Northpower provides contracting services across the North Island including engineering, infrastructure management and maintenance and construction.

Typical running costs for household appliances

What does it cost to run appliances in your home?

Here’s a helpful list of what it costs to run various household appliances in different parts of your home.

The amount of power an appliance uses is determined by its wattage – 1000 watts equals a kilowatt.

When you run a 1000-watt appliance for one hour, you use one unit (kilowatt hour) of electricity. One unit of electricity will run a 2000 watt plug in heater for 30 minutes or a 100-watt bulb for 10 hours.

The following sets out approximate running costs based on an average energy retailer tariff as at January 2024. All prices include GST.

Approximate net running costs

Household 24 hour use – 35 cents kW/h

Standard controlled – 25 cents kW/h

Heating

Heatpump (4.5kW output)*

Plug-in fan heater (2.4kW)

Five fin oil column heater

Dehumidifier

Electric blanket

1 year for $297 (3hrs/day, 6 months/year)

1 year for $462

1 year for $192

Overnight for 98 cents

1 week for 98 cents (4hrs/day)

* The cost of a heatpump will vary depending on the temperature set, how big it is and the time it is used for.

Water heating

Electric cylinder (180L)

Heatpump cylinder 

1 year for $821 (heating for 3hrs/day)

1 year for $411 (heating for 3hrs/day)

Electricity used by hot water cylinders will vary depending on the cylinder size, amount of hot water used, thermostat setting, temperature of the incoming water and if there is any cylinder insulation.

Baths use more hot water than showers so will cost more.

Kitchen

Refrigerator

Chest freezer (300L)

Jug

Coffee machine

Toaster

Slow cooker

Rangehood and extractor fan

Oven

Microwave

Stovetop (two elements)

Airfryer

Electric frypan

Sandwich press

Food processor

Cake mixer

Dishwasher

1 year for $153

1 year for $153

1 litre for 4 cents

1 cup for 4 cents

2 slices for 1 cent

1 hour on low for 8 cents

1 hours use for 7 cents

1 hours use for 70 cents

10 minutes use for 7 cents

1 hours use for 84 cents

10 minutes use for 13 cents

10 minutes use for 14 cents

5 minutes use for 6 cents

5 minutes use for 2 cents

10 minutes use for 3 cents

1 hours use for 63 cents

Bathroom and laundry

Washing machine

Dryer

Iron

Heated towel rail

Hairdryer

Incandescent 100-watt bulb lights

LED 100-watt equivalent bulb

1 cold wash for 18 cents , 1 hot wash for 70 cents 

1 hour for 53 cents

10 minutes use for 7 cents

1 days use for 60 cents

10 minutes use for 9 cents

1 year (6hrs/day) for $76

1 year (6hrs/day) for $7

Living room

Television (LED)

TV decoder

Gaming console

Ceiling fan

Vacuum cleaner

1 hours use for 28 cents, 1 day on standby for 3 cents

1 day for 21 cents

1 hours use for 5 cents, 1 day on standby for 13 cents

1 days use for 25 cents

30 minutes use for 18 cents

Study/work room

Desktop computer

Laptop computer

Phone charger

Digital alarm clock

1 work day for 56 cents

1 work day for 17 cents

Overnight for 3 cents

1 year for $24.50

Pumps and sewerage

Pool filter pump

Water pump

Aerated sewerage system

1 year for $2,044

1 year for $56.20 (2hrs/day)

1 year for $245

Spa pools

The cost of running spa pools varies according to pool size, thermostat setting, insulation, heating element size, usage and electricity tariff.

Need more information?

If you need any further help or advice on the costs of running appliances, we’re happy to help and please contact us with your query.