I dont usually write reviews but thought folks could benefit from my experience. I really wanted to like these fans and hence purchased 2 of them for the kids bedrooms. Had waited for an electricians availability to install professionally (so to conclude not an install issue) only to find out the loud hum it makes. It radiates through the walls as my husband said the first night after the install. Fast forward a month or so the concensus is to swap them out for another fan after we tried to tolerate it. It just isnt working. I know everyones tolerance level is different with low hum. This to me is not acceptable. We have had many fans in the past and this has been by far the worst. Really wish we knew this considering all the  we dumped into it.