What a cooler this is one of the best air cooler I had ever seen and enjoyed because of its light weight it is vwry easy to move it here and there there is not any problem in this cooler last 2 year I am using it cools very fast with a pleasent wave it does not have any irritqting sound you dont feel any provlem even you cant recognize it is stary or not because of its no sound motor but I think here ia a problem that it does not have long flow of wave if sit little far from cooler then you dont feel it air pressure but you also dint feel hot when thia cooler works for you acvording to me this cooler is best for small roooms you can buy it with no doubts