Question: My dimmer switch makes a humming sound when the light is in the “ON” position. Do I need to replace it?
Answer: Many dimmer switches have a humming sound when in operation. If this is annoying you and the family you can usually solve the problem by replacing the current dimmer switch with a more expensive model. In my opinion, dimmer switches made by Pass & Seymour or Leviton are the best.
Note: It is very common to have humming dimmer switches when the switch is used to control a fan motor rather than a light. There are specially designed speed control switches made for fan controls. Check with the manufacturer of the fan to find out which speed control they recommend.
Additional information on dimmer switches.
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