Why do my lights flicker when appliances turn on?
Direct Answer
Lights flickering when appliances turn on is usually caused by voltage fluctuations due to high electrical demand. While minor flickering can be normal, frequent or severe flickering may indicate wiring issues or an overloaded system.
Common causes
- Large appliances drawing power (HVAC, fridge, etc.)
- Loose wiring
- Undersized circuits
- Aging electrical panel
When it’s normal vs not
Normal:
- Slight flicker when AC or fridge starts
Not normal:
- Frequent flickering
- Dimming across multiple rooms
- Lights getting brighter/dimmer randomly
Potential solutions
- Install dedicated circuits
- Upgrade panel capacity
- Tighten or repair wiring
- Evaluate load distribution
Is it dangerous?
It can be — especially if caused by loose wiring or panel issues.
Need an inspection?
We can diagnose flickering issues and make your system safe and stable.
Serving Lafayette, West Lafayette, and nearby areas and counties.
