Question about lights and your HVAC

My Lights Flicker When I Use My HVAC. Should I be Concerned?

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 annoying 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 signify a serious electrical problem? It varies.

When are dimming or flickering lights considered common?

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

While it might not feel like it, your home has a certain amount of electricity it can use at any given time. Large appliances—like your HVAC system—need a major amount of electricity to start up. When those appliances turn on, they consume a larger amount of the available electricity. This means the other appliances in your home, like your lights, have a lower amount of 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 KDM Service Corporation. We’ll review your system and see if an equipment upgrade or circuit changes can solve the problem.

When should I worry about flickering lights?

Flickering lights can also signify a more serious matter. Don’t try to figure this out by yourself. The problem could be dangerous for you or your home. Call a professional if you experience:

  • Lights that continue to flicker. The normal flickering that occurs when there isn’t enough power to support 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 regularly at any other time—you could have a problem with your wiring.
  • Lights that dim considerably. 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 might have something wrong with the outdoor compressor on your air conditioner.
  • A circuit breaker trip when you start your HVAC. Circuit breakers are an essential part of your home’s electrical system. When they trip and shut off power to a section of your house (powered by a specific circuit), they are attempting to protect you from an issue with your circuit. While it could be that you have too many appliances on the same circuit, it’s smart to bring a professional in to confirm there isn’t a more serious problem.

Any time your HVAC system and lights don’t work together, it’s not a bad idea to call a professional in to take a look. The team at KDM Service Corporation is here to help. When you need us, you can give us a call at 205-208-8090 or schedule an appointment online. We’ll make sure everything is in order so your family can feel safe in your home.

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