Electrical Wiring in the Home/box fan dimmer


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?

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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Electrical Wiring in the Home

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Bill Lutz


Any questions about being an electrician or doing electrical work. I can help advise people on their wiring needs, what kind of outlets and switcher to use, explain what an electrical service is and how their breakers work. I can also help them with their lighting needs. . I CAN HELP YOU UNDERSTAND WHAT YOUR LOOKING AT.


My Father apprenticed to his Father-and I apprenticed to mine, repeating an invaluable tradition of child labor and a great place to learn a trade. Beginning at the age of 13, I worked with my dad every weekend and summer vacation in homes throughout Philadelphia repairing and rewiring all levels of residential electrical systems. Studying electrical engineering and earning a degree in architecture has given me a solid advantage in solving the myriad of residential electrical problems. Generation 3 Electrical, Inc. takes pride in every job - building confidence by how we do things - by being prompt, thorough and leaving every job site finished and clean.

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