Reuben's Home Inspection Blog

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Dimmer Switch On Ceiling Fan = Fire Hazard

I love dimmer switches; I use them to control almost every light in my house.Installing a dimmer switch is a common enough DIY project, but like any other DIY project, I often find them installed improperly.  The most common problem I find is when dimmer switches are connected to a ceiling fan.

Standard dimmer switches should never be used on ceiling fans because they could damage the fan motor or they could overheat and start a fire.  To know whether a dimmer switch is intended for use with a fan, all you usually have to do is remove the switch cover; there is typically fine print right on the front of the switch saying whether or not it can be used with a ceiling fan.

The photo below left comes from a fan speed controller - this is what needs to be used on a ceiling fan.  The photo below right comes from a standard dimmer switch, and this should not be used on a ceiling fan.

Fan Speed Controller Front Incandescent Dimmer

When I find a dimmer switch that is designed for incandescent fixtures connected to a ceiling fan, I always recommend repair.  A safe repair can be as simple as replacing the dimmer switch with a standard toggle switch, but you also lose the ability to dim the light.

If the wiring for a ceiling fan is already in place in your home (ie - you have separate wires for the fan control and the light control), it should be fairly easy for a qualified person to wire up separate controls for the fan and the light, which will include the ability to dim the light.

Universal Ceiling Fan RemoteIf the ceiling fan was a retro install, there probably won't be proper wiring in the wall for separate fan and light controls; not to worry though.  You can actually purchase a device that will do this - it consists of a wireless remote and a receiver that gets wired directly in to the fan.  These devices work very well, and as far as I know, they can be used with any ceiling fan.

 

Reuben Saltzman, Structure Tech Home Inspections

        

Comment balloon 61 commentsReuben Saltzman • October 26 2010 06:23AM
Dimmer Switch On Ceiling Fan = Fire Hazard
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