My husband is very particular about things and even he loves this! It is super quiet, blows cool air and there is an option to blow air out.  This window fan has 3 speeds and we love it. It’s in my bedroom window and provides enough noise to provide a peaceful nights rest while keeping us cool. The only reason it received 4 stars instead of 5 is because I’d really like to be able to adjust the vents but can’t.