How to Fix Lights Flickering When Ac Turns on

If you have noticed your lights flickering when the air conditioner turns on, you should know that this problem needs to be addressed. Flickering lights can cause serious safety hazards like electrical fires and power surges. Furthermore, it can also cause damage to any equipment connected to the circuit, resulting in costly repairs.

How to Fix Lights Flickering When Ac Turns on

When dealing with lights flickering when the ac turns on, several advantages come with taking the proper steps. One of these advantages is the prevention of future power surges from occurring. When a light or appliance flickers due to fluctuations in electricity, this can cause an overload, leading to a power surge strong enough to damage interior wiring and appliances. In this blog post, You will learn how to fix lights flickering when ac turns on.

Step by Step Processes for How to Fix Lights Flickering When Ac Turns on

Step 1: Inspect the Breaker Panel

The first step in determining why lights flicker when the air conditioner turns on is to look at your breaker panel. Ensure all the breakers are firmly switched off, then switch them back on individually. If you hear a buzzing noise or the lights flicker again when you switch a particular breaker on, it could indicate an issue with the circuit.

Step 2: Check the Electrical Wiring

If all the breakers are properly switched on, then it could be an issue with the electrical wiring. Inspect any exposed wires for signs of damage or corrosion. Ensure they’re securely attached to their terminals and not frayed or kinked. If you spot any damage, hire an electrician to repair the wiring before you continue.

Step 3: Adjust Your AC’s Settings

If there doesn’t appear to be anything wrong with the wiring or breakers, then it may be necessary to adjust the settings on your air conditioner. Ensure that your AC isn’t set too high; if it is, the additional power draw could be causing the lights to flicker.

Installing a Surge Protector on Your Ac

Another potential cause of flickering lights is a dirty air filter. If your AC’s air filter is clogged, it can cause the motor to work harder than necessary and, in turn, put more strain on the electrical system. Make sure you replace or clean your air filter regularly.

Step 4: Tighten Loose Connections

Loose or faulty wiring connections can also cause lights to flicker when the AC turns on. Inspect all the wiring connections between the AC unit and your electrical panel and any exposed wires for signs of wear or damage. If you spot any issues, hire an electrician to repair them before continuing.

Step 5: Install a Surge Protector

Installing a surge protector on your AC unit can reduce the amount of strain on your electrical system and prevent the lights from flickering when the AC turns on. Ensure you use an appropriate voltage-rated surge protector and that it is installed correctly.

The lights flickering could indicate that your light bulbs are too weak for the amount of power the AC unit draws. Try switching to a higher-wattage bulb, as this can help reduce the strain on the electrical system when the AC turns on.

Step 6: Check Your Electrical Outlets

If you’re still experiencing flickering lights, it could be due to an issue with your electrical outlets. Ensure all the room outlets are securely connected and not overloaded with too many devices. If you spot any signs of damage or overheating, hire an electrician to repair them immediately.

Step 7: Call an Electrician

If you need help with the above steps, it may be time to call an electrician. They can check your system more thoroughly and offer any professional advice or repairs that may be necessary. Monitor your system regularly once you’ve got to the bottom of why lights flicker when the AC turns on. This will help prevent any future issues and ensure that your AC is working as efficiently as possible. 

Following these steps should help you resolve the issue of lights flickering when the air conditioner turns on, ensuring that your electrical system works safely and efficiently for years.

Check Your Ac Unit Circuit Breaker

Tips for How to Fix Lights Flickering When Ac Turns on

  1. Ensure all power sources to the AC unit, and lights are turned off and unplugged before attempting any repair.
  2. Inspect all electrical connections for damage and corrosion and re-tighten them if necessary.
  3. Check your AC unit’s circuit breaker to ensure it is functioning properly – if not, reset or replace it.
  4. Check for loose wiring in the walls or ceiling near the AC and lights, and ensure all connections are secure.
  5. Test the electrical outlets to ensure there is no power surge or abnormally low voltage.
  6. If all previous steps fail to resolve the issue, consider hiring a qualified electrician for a professional diagnosis and repair.
  7. Ensure to follow all relevant safety precautions when dealing with electricity, and never attempt a repair you are not qualified to do.

Follow manufacturer instructions and always wear protective equipment while working with electrical components.

Could a Wiring Issue Be Causing the Flickering Lights? 

Poor or outdated wiring in your home can cause lights to flicker when the AC turns on. If this is the case, you will need an electrician to inspect your wiring to see if it needs updating or repair. Wiring issues can be dangerous, so it is best to leave this task to a professional.

Poor or Outdated Wiring in Your Home

An electrician can assess the situation and determine if the wiring is causing your lights to flicker. If they find an issue, they can recommend a solution, such as rewiring certain areas or updating parts of your electrical system.

In some cases, a flickering light when the AC turns on, can be caused by a circuit overload. This happens when too much electrical current runs through an individual outlet or fuse box, causing a power surge.

If this is the case, you may need to install a new breaker or circuit breaker to help reduce the load and fix the flickering lights. If you’re still having problems with flickering lights when your AC turns on after trying these steps, then it may be time to call an experienced electrician for help.

Is It Necessary to Call an Electrician to Inspect the Wiring in the House?

It is always better to be safe than sorry, so if you are unsure of the cause of the flickering lights, call an electrician. An electrician will inspect your wiring and check for problems or faulty connections that could lead to a fire.

They may also recommend additional measures, such as installing surge protectors where needed. Additionally, they can check if the AC unit is overloaded and if a larger capacity would be more beneficial.

Knowledgeable professionals should always handle electrical wiring, so contacting an electrician is highly recommended. Not only will they ensure that all of the necessary safety steps have been taken, but they can also offer guidance on the best course of action to prevent any future issues associated with your AC unit and lights flickering.

 Contacting an Electrician is Highly Recommended

If you call an electrician, it may be more cost-effective to have them inspect the entire house wiring than just the AC unit.


One of the main disadvantages of fixing lights flickering when an AC turns on is that it can be dangerous. If the situation is not handled correctly, you could damage other appliances in your home or even cause a fire. Additionally, depending on the problem you are dealing with, it may require more advanced skills and tools to diagnose and repair the issue properly.

In conclusion, flickering lights and dimming when the air conditioner turns on are common problems. Many people think it’s normal, but there are some simple steps you can take to get rid of this annoying problem.

First, make sure your circuit breaker isn’t overloaded, and if it is, consider upgrading or adding additional breakers. Second, check for any damaged wiring or components in the electrical system. I hope this article has been beneficial in learning how to fix lights flickering when ac turns on. Make Sure the preventive measures are followed chronologically.

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Jennifer Branett

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