Lights Dimming When AC Turns On

Tools That May Help

Before calling a professional, these common tools may help you check the issue safely.

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Problem

Lights dim when AC starts.

Common Symptoms

  • Lights flickering unexpectedly
  • Breaker tripping repeatedly
  • Buzzing outlets or switches
  • Intermittent electrical power

Possible Causes

  • Startup current draw
  • voltage drop
  • shared circuit

How To Fix It

  • Check circuit load
  • separate circuits
  • inspect wiring

Safety Tip

Turn off power at the breaker panel before inspecting outlets, switches, or electrical connections.

When To Call A Professional

If dimming is severe or constant, call a professional

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