What causes flickering lights in my home and how to fix them?

Flickering lights in a home are usually caused by a loose bulb or a failing dimmer or switch, but they can also signal loose wiring or voltage issues that need an electrician. The most common everyday cause is a loose or incompatible bulb, especially when a non‑dimmable LED is used on a dimmer. In our Richardson-area service calls, persistent flicker often traces back to a loose neutral connection or aging dimmer hardware rather than the fixture itself.

Try these quick checks before calling:

• Tighten or replace the bulb and confirm it’s dimmer‑compatible.
• Replace a suspect dimmer or switch that buzzes, feels hot, or flickers when touched.
• Watch for whole‑home dimming when large appliances start; that points to load or service‑side issues.
• Treat aluminum‑wiring hotspots or any burning smell as urgent and turn off that breaker.

If lights flicker across multiple rooms or when appliances start, avoid using the affected circuits and schedule a professional evaluation. <br/> Updated: 2026-03-13 <br/> Need help in Richardson, TX? Call (214) 728-1977 or book online. "Matt and Xavier arrived on time and were very professional and did a complete survey of my electrical system and diagnosed my problem." — Jonah W.