Safety & diagnosis — not a substitute for inspection

Flickering Light Diagnosis Tool

A few quick questions to narrow down whether flickering is a nuisance or a safety issue.

Where is the flickering?

Is it on a dimmer?

Any warmth, smell, or buzzing at the switch or fixture?

Pattern-based read

Answer the questions to see a likely cause.

Warmth, buzzing, or a burning smell always means stop and call an electrician — regardless of anything else this tool suggests.

Loose bulb or socket: most common cause for a single fixture — try reseating the bulb first.
Incompatible dimmer: standard dimmers built for incandescent loads flicker badly with LED bulbs.
Large appliance cycling: a brief whole-house dim or flicker when an A/C or fridge compressor kicks on is usually normal voltage sag, not a fault.
Loose connection: a loose wire at the switch, fixture, or panel — this is where warmth or buzzing becomes a real warning sign.