Small, Efficient

This would be a perfect kind of filter fan to put in an office because it is so SO quiet. It is so quiet in fact that I am unable to use it for the intended purpose, I wanted to use it at bedtime not just as a filter and a fan but for the noise. I always have to have a little fan noise to go to sleep at night, otherwise I hear everything and I don't get much sleep. This fan is in fact so quiet that I can't even hear it, and I'm going to have to buy another fan that is life for my bedroom. I will however be taking this and using it somewhere in the day where it doesn't matter how quiet it is. Great fan, I'm still happy I bought it just actually wish it was a little louder!