This NewAir portable air conditioner cannot cool a very large room. Prior to getting this air conditioner I had a very small, cheap window air conditioner in the same room and it actually cooled much better. It is fine for a very small area but cannot handle anything greater. The exhaust hose situation is really not very good for people who have small children. They appear to be too tempting. I also had a problem with the window piece melting out of shape from the heat of the exhaust. My personal experience has brought me to the conclusion that window air conditioners are still the best way to go. Technically it is portable but even with wheels it is not very easy to maneuver around especially on a carpetted area. Overall, I would not recommend this air conditioner unless it was to cool a small closed in area and there was some reason that a window air conditioner could not be used. These cost about three times more and cool much less.