Proflohvac - Lighting Solutions for Contractors

Oct 28, 2023


Welcome to Proflohvac, the leading provider of lighting solutions for contractors. Our aim is to assist contractors in creating well-lit environments that enhance productivity, safety, and aesthetics. In this article, we will address a common problem faced by many homeowners and businesses – lights flickering when the AC comes on. We will explore the causes behind this issue and provide you with effective solutions to overcome it.

The Issue: Lights Flickering When AC Comes On

One of the most common complaints reported by homeowners is the flickering of lights when the AC unit switches on. This phenomenon can be frustrating and alarming, but fortunately, it can be resolved with proper understanding and troubleshooting.

The Causes

Several factors contribute to lights flickering when the AC comes on:

  • Inrush Current: When the AC unit starts, it often draws a high amount of current in a short duration. This sudden surge can impact the electrical system, causing lights to flicker.
  • Loose Connections: Poorly connected wires or loose connections can disrupt the flow of electricity, leading to flickering lights.
  • Dimmer Switch Compatibility: Incompatibility between the dimmer switch and the AC unit can result in flickering lights.
  • Electrical Panel Capacity: If the electrical panel is insufficient to handle the power demand of both the AC unit and other appliances, lights may flicker when the AC kicks in.
  • Voltage Fluctuations: Power grid fluctuations can cause lights to flicker, especially during peak usage times.

The Solutions

Now that we understand the causes, it's time to explore the solutions to overcome this issue:

1. Check the Electrical Connections

Begin by inspecting all the electrical connections related to the affected lights. Ensure that they are properly connected, tightened, and free from any corrosion or damage. Secure connections help maintain a stable electrical flow and reduce flickering occurrences.

2. Upgrade Electrical Panel Capacity

If your electrical panel is currently underpowered, consider upgrading to a higher capacity panel. This will allow for additional electrical usage, preventing flickering lights caused by excessive power demands from the AC and other devices.

3. Install Voltage Stabilizers

Voltage stabilizers can regulate and stabilize the power supply, protecting your lights and appliances from voltage fluctuations. By installing reliable voltage stabilizers, you can ensure a steady flow of electricity, regardless of the changes in the power grid.

4. Replace Incompatible Dimmer Switches

If you have dimmer switches installed in conjunction with the AC unit, ensure that they are compatible. Incompatible dimmer switches can cause lights to flicker. Consult with an electrician to identify and replace any incompatible switches with ones that are specifically designed to work with your AC unit.

5. Consult a Licensed Electrician

If the problem persists or if you don't feel confident in troubleshooting the issue yourself, it's always advisable to seek assistance from a licensed electrician. They have the expertise to diagnose any potential wiring problems, identify suitable solutions, and ensure safety during the electrical work.


At Proflohvac, we understand the importance of uninterrupted lighting for your home or business. By addressing the issue of lights flickering when the AC comes on, we strive to provide you with effective solutions that enhance the overall lighting experience. Implementing these recommendations will not only eliminate annoying flickering but also improve the electrical system's efficiency. Choose Proflohvac for all your lighting needs and let us guide you towards a well-lit environment that promotes productivity and comfort.

lights flicker when ac comes on
Simon Hart
Great insights! I never knew flickering lights could be caused by the AC. Thanks for sharing.
Nov 8, 2023
Michael Hill
Interesting read.
Nov 8, 2023
Great article! 💡✨ Very helpful for contractors dealing with flickering lights.
Nov 7, 2023