Which Household Appliances Use the Most Power? And How Can You Potentially Save Thousands Per Year?

Liam Morgan • September 26, 2023

Tired of those hefty power bills? Looking to do your part for the environment by reducing your energy consumption? We've put together a list of practical tips to help you cut down on your power usage and keep more money in your pocket while contributing to a sustainable New Zealand.

A black heater is sitting on a white surface.

Home Heating (30-35% of your power bill)


  • Choose the right heater for your space. Portable electric heaters are efficient, but heat pumps can be even more so (over 300% efficient).
  • Focus on heating the room you're in rather than the entire house.
  • Set your heat pump to 20°C or use a heater with a thermostat.
  • Keep heat pump filters clean and avoid "Auto" mode, which consumes more power.
  • Use heated towel rails and electric blankets sparingly, and use timers on heaters to turn them off when not needed.


Hot Water (30% of your power bill)


  • Lower your hot water temperature to 55°C at the tap.
  • Opt for showers over baths, especially with energy-efficient showerheads.
  • Fix dripping taps promptly, as they can waste both water and money.
  • Insulate your hot water cylinder and pipes to prevent heat loss.
  • Use cold water for your electric jug and consider using a plug while washing dishes to minimize water usage.
  • Utilize the cold wash cycle in your washing machine, as it is often sufficient for cleaning clothes.
A bathroom with a sink , toilet , shower and mirror.

Refrigerators and Freezers (12% of your power bill)


  • Look for appliances with high Energy Rating labels when buying new ones.
  • Maintain a constant temperature of approximately 4°C for the fridge and -18°C for the freezer.
  • Regularly defrost freezers and ensure proper ventilation around your fridge.
  • Keep door seals clean and secure, and avoid leaving the door open unnecessarily.
  • Borrow a checkmeter to assess your appliance's energy usage if you suspect it's not operating efficiently.
  • Defrost food in the fridge instead of the microwave to help cool the fridge.


Cooktops and Stoves (10-15% of your power bill)


  • Use appliances like microwaves, air-fryers, pressure cookers, and electric fry pans, which consume less power than ovens.
  • Only use as much water as necessary when cooking or using the kettle and keep pot lids on.
  • Match pan size to element size for maximum efficiency.
  • When using the oven, try to cook multiple items simultaneously to make the most of your energy.
  • Regularly check oven seals, and avoid using the oven as a heater.
A close up of a stove top oven with red lights on it.

Lighting (8% of your power bill)


  • Remember to turn off lights when you leave a room.
  • Install energy-efficient LED bulbs, which use 85% less power and last significantly longer than incandescent bulbs.
  • Keep light bulbs and fixtures clean to maintain optimal lighting output.


Washing Machines and Dryers


  • Use the cold wash cycle for laundry, as it consumes far less electricity.
  • Drying clothes outside is the most energy-efficient option. If you need to use a dryer, dry your clothes outside first to reduce drying time.


Curtains, Window Seals, Draft Stoppers, and Ventilation


  • Close curtains before sundown to trap heat in your home and ensure a snug fit around window frames.
  • Open curtains on sunny days to benefit from natural heating.
  • Seal windows and doors to prevent drafts, and use draft stoppers to keep cold air out.
  • Ventilate your home during fine days, wipe away condensation, and use extractor fans in the kitchen and bathroom.


Insulation and Double Glazing


  • Consider ceiling and floor insulation to reduce heat loss by up to 50%.
  • Retrofit double glazing to existing windows or use window film to enhance insulation.
A close up of two pieces of wood on a table.

By following these tips, you can significantly reduce your power usage, lower your energy bills, and contribute to a more sustainable New Zealand. It's a win-win for your wallet and the planet!


We Can Help You Shave 5-20% Off Your Power Bills!


How can we help you save big?


✅ We're market savvy: We don't just watch the energy market, we master it. Timing? That's our game.

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