No matter how powerful the pedestal or tower fan you have, it simply cannot cool a large area as effectively as an air conditioner can, even a window model. This is especially true if you have rooms that receive a lot of sunlight. If the temperature outside is high with elevated humidity, a fan will do little to cool even a small area in your home unless you sit right in front of it. If you are sitting near a typical table or pedestal fan, the blowing of air right onto you is not very pleasant. The blades of a fan can present a minor safety hazard, especially if you have small children in the house. If you do not clean the blades of a fan, they will simply blow dirt and dust all over the area where the fan operates. https://www.minisplitairconditioningsystem.org/