Ceiling Fan Electrical Noise (Loud Pulsing Hum)

I replaced my ceiling fan and am getting the loud pulsing hum you can here in the video when I turn it to the highest speed. The fan I replaced was 20+ years old and on a dimmer dial switch. It had a quieter but similar hum at higher speeds. I assumed it was the switch and the age of the fan. The new fan is much louder even though I removed the dimmer and connected the switched wires directly to each other. For background, the wiring has separate load wires for the fan and the light. The light switch is wired through 3 total switches around my room. The hum occurs whether the light is on or not. The hum is less noticeable at lower fan speeds but still pulses at the same frequency. What in my wiring could be causing this? How should I start troubleshooting? submitted by /u/Triiiathlete [link] [comments]

Jun 4, 2025 - 02:54

I replaced my ceiling fan and am getting the loud pulsing hum you can here in the video when I turn it to the highest speed. The fan I replaced was 20+ years old and on a dimmer dial switch. It had a quieter but similar hum at higher speeds. I assumed it was the switch and the age of the fan. The new fan is much louder even though I removed the dimmer and connected the switched wires directly to each other.

For background, the wiring has separate load wires for the fan and the light. The light switch is wired through 3 total switches around my room. The hum occurs whether the light is on or not. The hum is less noticeable at lower fan speeds but still pulses at the same frequency.

What in my wiring could be causing this? How should I start troubleshooting?

submitted by /u/Triiiathlete
[link] [comments]