Ceiling fans pre-date air conditioners by several hundred years, probably thousands. The original fans were of course human powered by means of a long rope which went from the fan out through the wall to the place on the veranda or corridor where the servant sat.
Modern air conditioning is, without doubt, a wonderful invention, particularly for those of us living in warmer climates - but ideally you should have both ceiling fans and an air conditioner and not rely on an air conditioner alone. Here is why:
1) Ceiling fans make your air conditioner work more efficiently - by forcing the cold air from the unit to mix with the warmer air in the room.
2) Overhead fans are generally quieter than air conditioners - you may be happy to sleep under a fan without the noise of an air conditioner cutting in and out all night.
3) The right ceiling mounted fan makes a powerful design statement. If you have a high-ceilings in a heritage home they look bare without fans.
4) Ceiling fans with heaters can be used year around and particularly useful with reverse-cycle air conditioning units.
5) If you are trying to reduce your heating and cooling costs, you will save a lot if you install a fan as it will help your heating or cooling system to run far more efficiently.
So don't try to save money on your home cooling system by thinking you can avoid installing fans. It would be a false economy that will cost you more in the long run.
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