It is possible for some AC units to remove any debris or unhealthy elements as well as moisture from your room, but there are a few general rules that the user will need to follow. First of all, due to the AC unit’s function, any mold and humidity will be sucked out of the room while the unit is in use. However, for the machine to be effective, it is important that the unit is being used for at least 30 minutes. While an AC unit can make a room less humid, it is not the machine’s main function. If your room is exceptionally humid, it is wise to use a dehumidifier as opposed to just relying on your AC unit.