As temperatures drop, energy use in our homes rises. Heating, hot water, and longer hours of lighting all add pressure to household budgets. The good news is that small changes can make a noticeable difference. With the right approach, it is possible to stay warm and comfortable while keeping costs under control.
One of the most effective places to start is heating. According to Energy Efficiency and Conservation Authority guidance, heating accounts for a large share of winter power use in New Zealand homes. Heat pumps remain one of the most efficient options. They provide more heat for each unit of electricity used compared to portable heaters. If you already have a heat pump, set it to a steady temperature between 18 and 21 degrees. This range is recommended for both comfort and efficiency. Avoid turning it on and off frequently, as this can increase energy use.
Insulation also plays a critical role. Even the best heater will struggle in a poorly insulated home. EECA notes that ceiling and underfloor insulation can significantly reduce heat loss. Simple draught-stopping measures can also help. Door snakes, window seals, and heavy curtains keep warm air in and cold air out. Closing curtains at dusk is a small habit that can lead to real savings over time.
Hot water is another major contributor to energy bills. According to Consumer NZ, water heating makes up around a third of household energy use. Lowering the thermostat on your hot water cylinder to 60 degrees can reduce costs without compromising safety. Taking shorter showers and installing a low-flow showerhead will reduce water and energy use.
Appliance choice matters more than many people realise. When it’s time to replace an appliance, look for high Energy Star ratings. The Energy Rating Label, required in New Zealand, provides a clear guide. Products with more stars use less energy over time. While efficient appliances can cost more upfront, they often save money in the long run.
How you use appliances is just as important. Washing clothes in cold water significantly reduces energy use. Heating water is one of the most energy-intensive functions of a washing machine. Dryers are convenient but costly to run, so it’s best to use a clothesline or drying rack when the weather allows. If you do use a dryer, clean the lint filter regularly to keep it running efficiently.
In the kitchen, small habits can add up. Use lids on pots to reduce cooking time. Match the pot size to the element on the stove. Microwaves and air fryers often use less energy than ovens for smaller meals. According to EECA advice, using the right appliance for the task can lower overall consumption.
Lighting is another easy win. Switching to LED bulbs can reduce lighting energy use by up to 80 per cent compared to older incandescent bulbs. LEDs also last much longer, which reduces replacement costs. maximise natural light during the day by opening curtains and arranging living spaces to capture sunlight.
Many devices continue to draw power when not in use. Consumer NZ recommends turning appliances off at the wall where possible. Smart power boards can make this easier by cutting power to multiple devices at once.
Solar power is a good option for those wanting to stay in their homes long term. While the upfront cost is still significant, more households are exploring solar panels as a long-term investment. Even without solar, being mindful of when energy is used can help. Some providers offer off-peak rates, which reward shifting energy use to quieter times.
Saving energy at home doesn’t require a full overhaul. It often comes down to a series of small, practical choices. As winter sets in, these changes can help keep homes warm, comfortable, and more affordable to run.
