Energy Efficiency Tips for New Zealand Homes

Do your power bills feel too high each month? You’re not alone - many New Zealand homes use more electricity than they need. The good news is that energy efficiency doesn’t have to be complicated or expensive. Often, small improvements make the biggest difference. By adding insulation, sealing draughts, and upgrading a few key features, you can save money, stay comfortable year-round, and reduce your environmental footprint.

In this article, we’ll share eight easy, practical tips to make your Kiwi home more energy-efficient- from insulation and lighting upgrades to smarter daily habits.

1. Add Insulation

Insulation works like a blanket for your home. It keeps heat inside during winter and blocks hot air in summer. Without it, warmth escapes through ceilings, walls, and floors - meaning your heater or air conditioner must work harder. Adding or upgrading insulation in key areas helps stabilise indoor temperatures and lowers monthly power bills. A well-insulated home is more comfortable in every season.

2. Stop Draughts

Even small gaps around windows or doors can let cold air in and warm air out. Over time, this makes your home feel chilly and increases heating costs. Sealing gaps with weather strips, silicone sealant, or simple door snakes helps keep the indoor climate consistent. Your heating or cooling system won’t need to run as long, saving both energy and money.

3. Switch to LED Bulbs

Traditional bulbs waste a lot of power and burn out quickly. LED bulbs use up to 80% less energy and can last for years. It’s one of the cheapest, fastest energy-saving upgrades you can make - and over time, the savings on your power bill really add up.

4. Use Efficient Heating and Cooling

Heating and cooling account for most household energy use in New Zealand. Instead of relying on inefficient space heaters, consider installing a heat pump. Heat pumps use far less electricity while keeping your home warm in winter and cool in summer. Ceiling fans also help circulate air more evenly, improving comfort without drawing much power.

5. Be Smart with Appliances

Appliances quietly use energy every day. Simple changes help:

• Wash clothes in cold water - it cleans just as effectively.
• Turn appliances off at the wall to stop standby power drain.
• Use “eco mode” on dishwashers and washing machines.
• Dry clothes outdoors when possible instead of using a dryer.

Each small habit contributes to noticeable annual savings.

6. Let in Natural Light and Air

Sunlight and fresh air cost nothing - and they make your home feel bright and healthy. During the day, open curtains to let in natural light rather than using lamps. At night, close them to trap warmth. In summer, open windows in the evening to cool your home naturally. These habits reduce reliance on artificial lighting and air-conditioning.

7. Check Power Plans and Timing

Electricity prices vary between providers and time periods. Some power companies offer cheaper “off-peak” rates - often at night or early morning. Running your washing machine, dishwasher, or charging devices during those hours can reduce bills. Reviewing your power plan annually ensures you’re always on the best rate for your household.

8. Get a Home Energy Check

Not sure where your energy is being wasted? A professional energy audit can identify key problem areas - such as poor insulation, draughty joinery, or outdated appliances.

An expert can recommend the most effective upgrades for your budget, helping you make confident, targeted improvements.

Make Your Home Energy-Smart with Oncore NZ

At Oncore NZ, we help homeowners make practical, affordable upgrades that deliver lasting comfort and energy savings. From sealing draughts and adding insulation to installing heat pumps or LED lighting, our team handles every step - design, planning, and installation. You don’t need to coordinate multiple trades. We do it all for you, so your home stays warm, efficient, and cost-effective year-round.

Ready to make your home energy-smart? Contact Oncore NZ today for tailored solutions that reduce bills and support a greener future.