Today I installed a new Heg's Vortex II exhaust fan in our RV. Pretty simple job, lots of you tube videos to watch. It has 3 speeds in or out and seems quiter then the little fan the the manufacture installs. The only thing that I noticed was it took away alot of light but then you have the skylight from the shower.
It's the first thing I do when I get a new RV home. This is my 3rd Vortex fan. You'll be amazed at how it takes out the moisture. It's so powerful that it unravels the tp from the roll. One thing though, it will pull the black tank aromas into the bathroom when you flush.
Making a smooth transition to senility for over 70 years