The key to a quiet fan is to isolate the motor vibration from all other parts. This occurs, in the majority of fans, in three places: between the motor and the blade brackets, between the blade brackets and the blades, and between the downrod/motor flange and the mounting bracket. Some fans also have vibration-isolating material between the mounting bracket and the ceiling. If your fan makes a noticable humming noise, inspect it for the above mentioned types of vibration-isolating material. With the exception of the rubber flywheel, if your fan is lacking any of the above, they are easy to add and should solve the majority of humming problems. You can always add additional material as rubber washers and spacers are readily available.
Vibration noise is not the problem if the hum you are hearing does not change with the fan speed. If the hum is constant regardless of speed, you are hearing 60 cycle hum. This is the internal noise caused by the motor. There is nothing you can do about it because it is a function of a cheaply constructed motor.Vibration noise is not the problem if the hum you are hearing does not change with the fan speed. If the hum is constant regardless of speed, you are hearing 60 cycle hum. This is the internal noise caused by the motor. There is nothing you can do about it because it is a function of a cheaply constructed motor.
Answers & Comments
The key to a quiet fan is to isolate the motor vibration from all other parts. This occurs, in the majority of fans, in three places: between the motor and the blade brackets, between the blade brackets and the blades, and between the downrod/motor flange and the mounting bracket. Some fans also have vibration-isolating material between the mounting bracket and the ceiling. If your fan makes a noticable humming noise, inspect it for the above mentioned types of vibration-isolating material. With the exception of the rubber flywheel, if your fan is lacking any of the above, they are easy to add and should solve the majority of humming problems. You can always add additional material as rubber washers and spacers are readily available.
Vibration noise is not the problem if the hum you are hearing does not change with the fan speed. If the hum is constant regardless of speed, you are hearing 60 cycle hum. This is the internal noise caused by the motor. There is nothing you can do about it because it is a function of a cheaply constructed motor.
Remove the dimmer