Not a bad idea, except that CPU fans are nonstandard voltages. (Often they are 12 or 24 volts)

Since a wall outlet is in the 110-125 volt range, you would also have to wire up a step down transformer and a GFCI circuit since federal electrical code requires it for any household voltage device used within 36 inches of water. A lot of folks skip the GFCI. Their homeowner's insurance companies love them for it.

This is not a task I would suggest unless you are skilled electrically.


There are quite a few ready to use fans that are already wired for household voltage AND are damp proof. Allied Electric sells some that I swear by.