Question about lights and your HVAC

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

Lots of things in your home run on electricity—from charging your cellphone 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 air conditioning or heating system starts to run.

The question remains: Do dimming or flickering lights at the beginning of HVAC cycles indicate a serious electrical problem? It depends.

When are dimming or flickering lights considered normal?

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

While it might not feel like it, your home has a limited 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 only issue you are facing, your lights should dim for less than a second and quickly return to full brightness. If you’re irritated by the flickering, schedule an appointment with Air Unlimited Heating & Cooling. We’ll assess the situation and see if an equipment upgrade or circuit changes can help the problem.

When should I be concerned about flickering lights?

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

  • Lights that continue to flicker. The normal flickering that takes place 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 a challenge with your wiring.
  • Lights that dim significantly. 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 may 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 a section of your house (powered by a specific circuit), they are attempting to protect you from a problem with your circuit. While it could be that you have too many appliances on the same circuit, it’s best 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 a good idea to call a technician in to take a look. The team at Air Unlimited Heating & Cooling is here to offer you the help you need. When you need us, you can give us a call at 816-286-7258 or schedule an appointment online. We’ll make sure everything is in order so you can feel safe in your home.

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