Quote Originally Posted by johncar54 View Post
Not that it is important but for info.

Fans do not cool the air they actually very slightly increase the temperature in a room, i.e the heat coming from the motor.

What do they do ? They increase the air flow across one’s body thus any moisture on the skin (perspiration) is evaporated more quickly. Evaporation requires energy, i.e. heat, thus the heat comes from your body and cool you down.

So no point in leaving a fan on if you are not in the room, you are just wasting electricity.

PS For the Doubting Thomas's. Put a thermometer in front of the fan. The Temp will not change.
Yep this is true. That's why we decided to buy a portable aircon 2 months ago instead.