I've added a dimmer switch to a box fan and it worked. My question is, is it possible to make the fan spin even slower? Would adding another dimmer switch accomplish this? Is there a different way to lower the voltage getting to the fan?
Answer Hi Emily,
Installing a dimmer switch on a box fan in not recommended by the manufactures. It is not electrically correct and not allowed. I have yet to find the reason for this. My guess is you a have a remote chance of overheating the dimmer and causing a fire. I have see it done many times but as an electrician I can not recommend at dimmer to control a fan. There are special 3 speed fan controls that look like dimmers.
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