Flickering lights or household lights that dim periodically can be a nuisance, but usually there is a benign cause behind the flickering. However, flickering lights can also be an indication that there is a larger issue with your electrical system, in which case ignoring the issue can have serious consequences such as home fires. Before you start to worry, investigate the problem further. You can often diagnose the cause of flickering lights by observing the flickering pattern—when does it happen, for how long, how frequently, and so on. Here are some of the most common causes of flickering lights in a house and how to identify them.
Pattern: One light flickering
Probable Cause: You have a bad bulb or the bulb is loose in its socket. It’s an isolated problem, solved by switching out for a new bulb or simply screwing the bulb more tightly into its socket. Just remember to turn off the light before removing or adjusting the bulb to prevent burning or shocking yourself.
Pattern: Multiple lights flickering in a contained area
Probable Cause: If the problem is affecting multiple light fixtures but staying within a single room or region of your home, it’s probably an issue with the circuit. You’ll want to call an electrician to diagnose the issue more precisely. It’s best to do this sooner rather than later, because a loose connection in a circuit can be dangerous is left uncorrected