buzzing lights image, light fixture

Buzzing Lights: 4 Causes & Fixes

Why are my lights buzzing?

Do you hear an annoying buzzing sound when you turn on your lights? Don’t fret; you’re not alone. The mysterious hum emanating from your light fixtures can be unsettling, but fear not – we’re here to shed light on the issue. Below, we’ve compiled a list of four common causes why your lights may be buzzing and what you can do to fix them.

Loose Bulbs or Fixtures:

  • Problem: Sometimes, the simplest explanation is the most accurate. A buzzing light may be caused by loose bulbs or fixtures. Vibrations from loose components can create an irritating hum.
  • Solution: Turn off the power to the fixture, allow it to cool if needed, and then tighten any loose bulbs or fixtures. Ensure everything is securely in place before turning the power back on.

Dimmer Switch Compatibility:

  • Problem: If you have recently installed a dimmer switch, it may be the culprit behind the buzzing. Not all dimmer switches are compatible with every type of light bulb, leading to compatibility issues and noise.
  • Solution: Check the dimmer switch and light bulb compatibility. If they are not designed to work together, consider upgrading either the dimmer switch or the bulbs. LED-compatible dimmer switches are widely available and can often resolve the issue.

Faulty Wiring or Loose Connections:

  • Problem: Buzzing can also result from faulty wiring or loose connections in your electrical system. These issues can create a higher resistance in the circuit, leading to vibrations and noise.
  • Solution: If you suspect wiring issues, it’s crucial to turn off the power to the affected area and consult with a qualified electrician. They can inspect the wiring, identify any loose connections, and make the necessary repairs to ensure a safe and noise-free electrical system.

Old or Failing Ballast in Fluorescent Lights:

  • Problem: Fluorescent lights contain a ballast that regulates the current flowing through the bulb. Over time, these ballasts can wear out or fail, causing buzzing noises.
  • Solution: If you have fluorescent lights, consider replacing the ballast. It’s a relatively straightforward task, but if you’re unsure, seek the assistance of a professional. Upgrading to LED lights is another long-term solution that eliminates the need for a ballast.


A buzzing light can be a nuisance, but with a bit of troubleshooting, you can often identify and resolve the issue. From simple fixes like tightening loose components to addressing more complex problems like wiring issues, taking the time to diagnose and solve the problem will bring peace and quiet back to your illuminated spaces. If you’re uncertain or encounter persistent issues, don’t hesitate to reach out to Point B Electrical Services for professional assistance, ensuring the safety and efficiency of your lighting system.

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