Electrical buzzing sound only when lights are on, not when fan is on. Increases speed of pulsating with increase in speed of fan. So I had this exact same issue. Ceiling Fan Humming Noise. Along with a humming noise, other … Capacitor electronics in ceiling fans create distinct speed "steps" like high, medium, and low. Standards for ceiling fans are frequently revised so it’s important that the model year, specifications, and speed control match one another. Sometimes you can get away with replacing the fan control. There a variety of solutions you can try. When you adjust the speed a little lower the fans start to make a humming or slight buzzing sound. Recently as in yesterday, I installed a new 42 inch ceiling fan in my bedroom to help with air flow during the hot summer months, however there seems to be a small detriment in the quality of the fan. Knowing what causes a humming ceiling fan is all fine and good, but what you really want is a way to make it stop! Humming and pulsating. Dimmer switches were never intended to be used with ceiling fans. Lights off, quiet as the dead. Different fan noises can be a CLUE as to what the problem may be. I installed 3 ceiling fans today, with the help of an electrician friend. If you suspect your motor is to blame, because you hear a humming, grinding or buzzing sound, it may be time to replace your noise ceiling fan. A ceiling fan making noise can be from a variety of reasons. Two are Hampton Bay and one is westinghouse. Capacitors control the fan speed in a way that does not produce a hum. One of the most common causes of a humming ceiling fan is when dimmer controls are being used to control fan speed. A new one with an anti-hum feature could fix your problem. Same noise. Most ceiling fans control speed by use of capacitors. The dimmer control should be replaced with standard speed controls. Doesn't get louder though. The cheap ceiling fans tend to be more noisier than well builted fans are. The fan makes the same noise at every speed. In a ceiling fan, it’s used to regulate speed, change direction, or for another use. Namely, whenever it's turned on, there is a low frequency humming noise coming from what appears to be the motor. If someone installs a variable control ahead of the fan, and the fan switch is on maximum speed, reducing the speed via the variable control, will cause the fan to hum. First i tried replacing all the bulbs. How to Stop the Noise. I am also using Lutron Maestro dimmer wall switches. A capacitor is part of the electrical circuit that stores electrical charge. Variable fan speed controls are operated by solid state electronics which often can create a hum because they control the fan's … I discovered that it was due to the hole in the ceiling for the extraction being too tight this tightened in on the fan and prevented it from operating freely. Thank you for taking a moment to read my user with my ceiling fan. Ceiling fan motor noise. 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