I bought this 2 years ago, it did what a fan should for about a year, then as the plastic aged, the Lasko logo piece that covers the spindle of the fan started rubbing against the fan's pivot point.  I cut out the logo on the fan which temporarily removed the noise but the grate eventually started rubbing against the fan as well. I've basically had to cut out the entire center grate around the fan to eliminate the noise. I'll have to replace the fan eventually for a reason other than it just wearing out which is rather annoying. Lasko needs to engineer better fans.