I have had this fan for over a year now. I have had no issues with it. It moves more air than your standard box window fan. I like the reversible fan feature. The casing is adjustable so it fills the whole window without any gaps. This fan has to main negatives that I do not mind but some people might. One, this fan is pretty noisy. Choose another fan if you are looking for something quiet. Two, the fan has to be screwed (or otherwise attached) to the window frame. It does not just sit on the window frame very well like other box fans do.