Question about lights and your HVAC

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

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

The question remains: Do dimming or flickering lights at the beginning of HVAC cycles show 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 starts, it likely isn’t something to be worried 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 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, have less power available to them.

If this is the lone 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 AW Heating & Air Conditioning. We’ll assess the situation and see if an equipment upgrade or circuit changes can alleviate the problem.

When should I worry about flickering lights?

Flickering lights can also signify a more serious matter. Don’t assess the situation yourself. The problem could be dangerous for you or your home. Reach out to a professional if you notice:

  • 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 an issue with your wiring.
  • Lights that dim significantly. When you experience usual 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 start your HVAC. Circuit breakers are an essential part of your home’s electrical system. When they trip and shut off power to a part of your house (powered by a specific circuit), they are attempting to protect you from a concern with your circuit. While it may be that you have too many appliances on the same circuit, it’s smart to bring a professional in to check that 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 AW Heating & Air Conditioning is here to offer you the help you need. When you need us, you can give us a call at 402-318-5351 or make an appointment online. We’ll make sure everything is in order so your household can feel safe in your home.

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