Most things in your home depend on electricity—from charging your electronics to keeping the temperature inside where you want it. That’s why it’s infuriating when electricity in our homes doesn’t work the way we want it to. For many homeowners, this stress can come to a head when lights flicker after their HVAC system starts to run.

The question remains: Do dimming or flickering lights at the beginning of HVAC cycles show a serious electrical problem? It differs depending on the situation.

When are dimming or flickering lights considered usual?

If you’re noticing dimming that lasts for a fraction of a second when your HVAC begins, it probably isn’t something to be worried about.

While it might not feel like it, your home has a regulated amount of electricity it can use at any given time. Large appliances—like your HVAC system—need a significant amount of electricity to start up. When those appliances turn on, they take a larger amount of the available electricity. This means the other appliances in your home, like your lights, don’t have as much power available to them.

If this is the single issue you are facing, your lights should dim for less than a second and quickly return to full brightness. If you’re tired of the flickering, schedule an appointment with J & J Air Conditioning. We’ll assess the situation and see if an equipment upgrade or circuit changes can solve the problem.

When should I worry about flickering lights?

Flickering lights can also indicate a more serious matter. Don’t investigate yourself. The problem could be hazardous for you or your home. Contact a professional if you see:

• Lights that continue to flicker. The normal flickering that happens when there isn’t enough power to keep up with all appliances in your home should last a fraction of a second. If your lights continue to flicker on and off when you start your HVAC system—or continually at any other time—you could have an issue with your wiring.
• Lights that dim drastically. When you experience normal dimming, the effect is enough that you notice a small, brief change. If the intensity of your lights suddenly drops considerably, you could have something wrong with the outdoor compressor on your air conditioner.
• A circuit breaker trip when you switch on your HVAC. Circuit breakers are an essential part of your home’s electrical system. When they trip and shut off power to an area of your house (powered by a specific circuit), they are attempting to protect you from a problem with your circuit. While it may be that you have too many appliances on the same circuit, it’s wise to bring a professional in to make sure there isn’t a more serious problem.

Any time your HVAC system and lights don’t work together, it’s safe to call a technician in to take a look. The team at J & J Air Conditioning is here to offer you the help you need. When you need us, you can give us a call at 254-355-3833 or schedule an appointment online. We’ll make sure everything is in order so your household can feel safe in your home.