Possible causes
- Loose lamp or fixture connection
- Switch or local circuit issue
- Large appliance startup load
- Panel capacity or service concern
- Utility voltage fluctuation
Safe checks before you call
- Note whether the flicker stays in one room or happens across the home.
- Watch for worsening flicker, buzzing, heat, odor or breaker trips.
- Do not open panels or device boxes to investigate.
Professional assessment: A professional can check whether the flicker is expected behavior or a warning sign in the circuit or panel.
When it may be urgent
Call promptly if flickering is severe, new, worsening, paired with buzzing, or affects many lights.
FAQs
Is light flicker always dangerous?
No, but severe or worsening flicker can point to a connection, load or service issue that should be checked.
Can a dedicated circuit help?
Sometimes. A professional can determine whether the appliance load belongs on its own circuit.