It does this by passing air through sprays of water or over pans of water that are heated. The water will then evaporate into the air. It is important for air to circulate because it is uncomfortable to be in motionless air. The air in rooms usually gets filled with odors and moisture. This air is then removed when conditioned air is blown in.
Air is blown through roons by fans.
Air can be blown into rooms in two ways. By being blown in directly or blown in through pipes that will lead to different places in a room. As this is happening, other fans suck out the used air. In order to get rid of smoke and odors, the fans will drain some of the used air by blowing it out of the room. The rest of the air that is left is returned back to the air conditioner, where it is then mixed with ventilation air that is coming from the outside.