At home


Fans are the most energy-efficient form of cooling appliance.

Fans are the cheapest to purchase and run, operate quietly, assist with ventilation and are suitable for rooms of all sizes.

Portable and ceiling fans

These fans don't reduce actual room temperature or humidity levels, but produce a cooling effect by moving air around and over your skin, helping to evaporate excess moisture.

  • Head clearance for ceiling fans should be 600-900mm.
  • When purchasing a portable fan, look for an oscillating feature and variable speed control.
  • Mount ceiling fans higher than existing light fittings to avoid flickering shadows, or install a unit with a light incorporated.
  • Fans should be reversible, to assist with heating in the winter.

Whole-house fans

While moving air to create natural, cross-ventilation cooling in rooms, whole-house fans also expel hot air from the roof space.

  • Fan size needs to be in proportion to the cubic area of the home.
  • A minimum height of 900mm is required in the roof space.
  • The system will need to be located over a walk-through area, e.g. a hallway or top of a staircase.
  • Adequate roof exhaust vents are required for high-volume airflow.
  • A roof-mounted canopy can house the fan, if there is no roof space.

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Page last updated: 10 December 2015