Why Do My Lights Flicker or Dim in My House?

Flickering or dimming lights usually come down to one of a few things: a loose connection, a big appliance pulling power when it starts, an overloaded circuit, or an issue coming from the utility. A quick flicker when your furnace or air conditioner kicks on can be normal. Lights that flicker often, across the whole house, or get worse over time are worth having checked, and we are glad to track down the real cause.

Common reasons lights flicker

The most common cause is a large appliance, like an air conditioner, well pump, or dryer, briefly pulling a lot of power when it starts and dipping the voltage for a moment. Loose or aging wiring connections are another frequent cause, and those can be a safety concern because loose connections generate heat. An overloaded circuit with too much on it can flicker under load. Older or failing dimmer switches and bulbs that do not match the dimmer can flicker too.

When flickering is a warning sign

Some flickering deserves a closer look sooner than later. If lights flicker across your whole house, if the flickering is paired with a burning smell or warm outlets or switches, if it started after adding a large appliance, or if it is getting worse, those can point to a loose service connection, an overloaded panel, or a failing connection that needs attention. These are not worth guessing on.

What we check

We find the source instead of swapping parts and hoping. We check the connections at the panel and the affected circuits, look for loose or overloaded conductors, test the load, and confirm whether the issue is inside your home or coming from the utility service. Then we fix the actual cause and explain what we found in plain language.

Let us find the cause

If your lights flicker or dim and you are not sure why, send us a note about when it happens and we will help. We serve Coeur d'Alene, Hayden, Post Falls, Rathdrum, Liberty Lake, and Spokane Valley. Call or text 208-352-0662.