The install is a complete nightmare. This fan will not work if you don't have modern electric as it requires a separate cable for the fan and light controls. If you have a current fan with a hanging switch, prepare to either hire an electrician or crawl through your attic to run another cable.
Even if you know how to do that, the instructions aren't correct/don't make any sense. We had to write our own diagram over it to remember how to do it for the other rooms.
There was a loud hum from 1 fan that went away when we installed it in another room. So I'm not sure what that's about...

BUT, they are beautiful and sleek. Hire someone to install if you can afford it and make them go through the headache.