Why Do Your Lights Flicker When Your HVAC System Turns On?


Have you ever noticed your lights flickering when you switch on your HVAC system? It’s a common issue that can be both annoying and concerning. In this article, we’ll delve into why this happens and what you can do to address it.

Lights will usually flicker when the power comes on due to a surge in power needed to power your HVAC system.

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Why Do My Lights Flicker When HVAC Turns On?

The flickering of lights when your HVAC (Heating, Ventilation, and Air Conditioning) system kicks in is often due to a sudden surge in power demand. When the HVAC unit starts, it draws a significant amount of electricity to power its components, such as the compressor and fan. This sudden draw can momentarily reduce the voltage available to other appliances connected to the same electrical circuit, causing the lights to flicker.

How Do I Stop My Lights From Flickering When I Turn the AC On?

If you’re experiencing flickering lights when you turn on your AC, there are several steps you can take to address the issue:

  1. Check the Wiring: Start by inspecting the wiring in your home to ensure it is in good condition. Loose or damaged wiring can exacerbate flickering issues.
  2. Upgrade Your Electrical Panel: An overloaded electrical panel can struggle to handle the power demands of modern appliances like HVAC systems. Consider upgrading to a higher-capacity panel to alleviate the strain on your electrical system.
  3. Install Voltage Stabilizers: Voltage stabilizers, also known as surge protectors, can help regulate voltage fluctuations in your home, preventing flickering lights and protecting your electronic devices from damage.
  4. Consult a Professional: If you’re unsure how to address the issue or if flickering persists despite your efforts, it’s best to consult a licensed electrician. They can assess your electrical system and recommend appropriate solutions to ensure safety and reliability.

Can an Overloaded Circuit Cause Lights to Flicker?

An overloaded circuit is a common cause of lights flickering when the HVAC turns on. When multiple appliances draw power from the same circuit simultaneously, it can exceed the circuit’s capacity, leading to voltage drops and flickering lights. To prevent this issue, consider redistributing appliances to different circuits or upgrading your electrical panel to accommodate the increased load.

Is it Bad if Lights Flicker When HVAC Turns On?

While occasional flickering may not pose a significant risk, persistent or severe flickering can indicate underlying electrical issues that warrant attention. Ignoring flickering lights can lead to further damage to your electrical system and pose a safety hazard. Therefore, it’s essential to address the issue promptly to ensure the safety and efficiency of your home’s electrical system.

What Do I Do if My Lights Flicker When HVAC Turns On?

If you’re experiencing flickering lights when your HVAC system turns on, don’t ignore the problem. You should contact a professional who will assist you. Here is what an electrician can do for you.

  1. Inspect Your Wiring: Check for any signs of damage or deterioration in your home’s wiring.
  2. Upgrade Your System: Upgrade your electrical panel or install voltage stabilizers to mitigate voltage fluctuations.
  3. Diagnose The Issue: If flickering persists, seek the expertise of a qualified electrician to diagnose and resolve the issue.
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Contact White’s Plumbing and Electrical

Are flickering lights causing frustration in your Wake Forest home whenever you turn on your HVAC system? Don’t let electrical issues disrupt your comfort and safety. Contact White’s Plumbing and Electrical today for expert assistance. Our team of skilled electricians is ready to diagnose and address any electrical problems you may be experiencing, including lights flickering when the HVAC turns on.

Don’t wait until minor issues escalate into major problems—reach out to White’s Plumbing and Electrical for reliable solutions. With our dedication to quality service and customer satisfaction, we’ll ensure that your home’s electrical system operates smoothly and safely. Schedule your appointment with us today!

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