
If using a special fan controller ensure that the fans pull string (if they have it) are set to max speed and let the fan controller control the speed. However having mentioned that, particularly in winter climates it still may be desirable to have an exhaust fan even if an open able window exists in the bathroom.ĭo not use a regular light dimmer on the fan, fans require a extra jolt to get the blade moving, there are special fan controllers that can be used to control fan speed at the switch location (replacing the regular switch with the special fan speed controller) these are specially made to control speed and insure the fan does get moving when on, the danger in regular dimmers not meant to control a fan is that the fan could get some power applied to it but not enough to get it moving what that can do is heat it up and become a fire hazard. For purposes of relating to the wiring scenarios listed bellow, the source of power cable indicated in the diagrams must be GFI protected at or before that point.īathrooms with windows that open are not required to be with bathroom exhaust fans as per the CABI One and Two Family Dwelling Codes. In a situation of a exhaust fan or exhaust fan / light combo that is to be used in an above bathtub or shower area, the fixture must be specifically approved for that purpose and must be GFI protected. Heavier units require additional support independent of the box itself. There is special electrical boxes designed to mount a fan / light combo unit and is a requirement in electrical codes of a lot of jurisdictions (ask about these at your local electrical supply store). These wiring options are suitable for both paddle fans / light combos as well as exhaust fan / light combo units.
