I use a fan in my room to sleep, both to cool me down and for the white noise. My old fan stopped working about a month ago, so I went to the store for another one and found this. At first, I was impressed by the circulation, but after about 30 minutes, the fan began to make a horrible, high-pitched rattling noise. I switched it to the medium setting and was dismayed to find that the circulation was really weak and the fan was still making that terrible noise. I thought maybe I had to break it in a little for the noise to go away, so I kept using it for two weeks. During those two weeks, I had some of the worst sleep of my life, and the noise actually managed to get louder. If you are sensitive to noise or value your sanity, this is absolutely not the product for you.