Fans work by circulating the air, evaporating the moisture from your skin, which causes a cooling effect. Evaporative coolers cool and filter the air, by drawing in hot air from outside your home and then filtering before blowing into your house. Air conditioners cool air already in your home through a pipe with a coolant before filtering and releasing this air back into your home. This cycle continuously occurs cooling your home.
It is important to regularly check your cooling system for any damage, leaks or blockages. Also see Energy Saving Tips for your Air Conditioner in Summer.>