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Auckland Council

Tips to create a healthy, energy-efficient home

​Top tips to make your house warmer, drier and more energy-efficient



  • Trim trees or plants that are blocking any windows, and make sure your curtains are open all day to take advantage of the sun in winter.


  • Check your ceiling and underfloor insulation – if you can see the ceiling joists inside the roof cavity, or any gaps in the insulation, it needs to be topped up.
  • Stop draughts – make sure your doors and windows fit their frames properly, block up old fireplaces, and use draught-stopping tape or seal and draught excluders.
  • Install lined curtains that reach to the floor, and are covered by a pelmet or face-fitting tracks at the top. This can be as effective as double glazing.


  • Set your heating system to 18 degrees in the bedroom, and 21 degrees in the living room. Invest in a plug-in thermostat for heating appliances to keep you warm and healthy without wasting energy.
  • Make sure your heating system is clean and efficient – clean your heat pump’s filter regularly, and have your chimney or flue swept once a year. Replace your inefficient and costly unflued gas heater.

Managing moisture

  • Get externally ducted extractor fans for your bathroom and kitchen.
  • Dry clothes outside, or use a drier for a short amount of time (this is more efficient than using a dehumidifier).
  • Put down a groundsheet under the floor to help with rising damp.
  • Wipe condensation off your windows in the morning.
  • Open your windows for at least 20 minutes a day.

Hot water

  • Check your shower’s flow rate – if it fills a 10L bucket in less than a minute, it’s wasting water.
  • Consider a water-efficient shower head or a flow control disc to keep the flow rate to 9L/minute.
    Insulate your hot water cylinder and pipes, either with a cylinder wrap or some old blankets.

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