Although we do not have it hooked up to a to variable speed switch we can adjust it by removing the face. The variable speed switch is easily accessible.
Our bathroom is small, 5' x 7.5' (35.5 sq ft), and we have it set on medium. It is doing a great job of removing the steam after a shower and odors that arise in a bathroom. What you hear in the video is set on medium.
It was very easy to retrofit to a previous installation that was probably from the 70s. The instructions were simple to follow and detailed. We did have to increase the size of the hole in the ceiling because this fan is quiet substantial. We would recommend measuring the current opening in order to be prepared for that.
![](https://i.ytimg.com/vi/P8-MS2UBRjM/maxresdefault.jpg)