Question

Why do the people put their air conditioners near the ceilings.

Answer 1

because from the Ceiling air conditioners have wide range for cooling the surrounding.

Answer 2

According to the basic physics, Hot air is less denser and cold air is more denser. So what will happen when a higher weight object is dropped in a lower weight liquid. The object goes down to hit the floor and water stays up. The same happens here. The cold air goes down and hot air stays up. So when you want to cool the hot air you should obviously place the Air conditioner on the top of the room. If you wanted to heat the room then you will place the air conditioner in the bottom of the room.

Hope this helps!!