I haven't had it for long, and that's the reason for the 4 stars instead of 5. It is quiet and efficient. I have it about a meter away from the computer chair. My workspace is about 3 square meters with a desk and 4 computers. With a little cold water, it creates a pleasant atmosphere when the temperature is around 27 degrees Celsius outside. Adding ice to the cold water makes it last longer and be cooler. It doesn't replace an air conditioner, of course, but in the absence of one, it helps a lot in a limited space. So far, I am satisfied.