Thank you for your review. The fan should operate quietly at all 3 speeds when properly installed. Most noise issues can be attributed to loose parts, including the outlet box, which could cause vibration and present as a humming noise. Please make sure all parts are correctly installed and completely tightened. If that does not resolve the issue, please call Hampton Bay customer service at 1-855-HD-HAMPTON (1-855-434-2678) and one of the team members will be able to get more information to help troubleshoot and resolve the issue.