This unit is totally useless! It doesnt really cool the air at all, just blows it around a bit- not that you would even notice that if you are more than 2 feet away from it! Its been on for a few hours on full (set up with a window behind and opposite a door as per the instructions) and its still boiling hot in here, with just a bit of hot air being blown around. Also having to constantly fill the 13 litre water tank is a nightmare! (unless you have an indoor hose pipe or something). Wish I had bought something like the Alaskan 15000BTU instead.