well if all the electrical configurations match up you will be good,npot sure if u can burn out the fan by giving it less amperage but it probably just wont work properly, ever seen a fan or rather herd one that didnt move and sounded like buzzing. Also u can over heat your dimmer switch and make fires if not destroy it. So its dooable, but make sure you know what your doing and run it for a day while your home and watch the temps on the motor and the dimmer.