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I'm looking for a device that will allow me to control the fan speed as well as have it timeout.

In theory this might work if I used the output from the timer to feed into the dimmer, but it doesn't seem ideal as the both switches need to be on in order for it to work and that sounds like a good way to frustrate the end user: http://www.homedepot.com/p/Lutron-Maestro-300-Watt-Single-Pole-Digital-Dimmer-and-Timer-Switch-White-MA-L3T251-WH/100658808

What are my other options?

  • Note that most - or none that I know - bath fans are not variable speed. You can certainly take power from it and I am sure it will power down but make sure the fan/motor is accessible from above because I doubt the motor lasts very long. – DMoore Jan 23 '15 at 5:36
  • Are you trying to control speed because of noise? You can get fans that are low noise (less than 1 sone is pretty quiet) for in the $100 range (vs $30 for crappy, loud builder grade). Note that the vent size and run is a factor: you sometimes will have to use 4 or 5" vents to get that rating, and that long runs or many turns will also increase noise. – gregmac Jan 23 '15 at 7:02
  • @DMoore The fan is inline and fairly accessible in the attic. It needs speed control because to pulls a lot of CFM on high speed. Also needs the timer because its so quiet that I forget its on. – mikeytown2 Jan 23 '15 at 19:31

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