Why Does My Lights Flicker When My AC Turns On?: 1 Minute to Understand AC and Lighting Issues

If you've ever noticed your lights flickering when your air conditioning (AC) unit turns on, you're not alone. This is a common occurrence that can be alarming, but understanding the reasons behind it can help you address the issue effectively.

Typically, when your AC starts up, it requires a significant amount of power to kick into gear. This sudden surge of electricity can cause a temporary drop in voltage, impacting other electrical appliances, including your lights. Here’s a deeper look at the common reasons for this flickering.

Understanding Electrical Load

1. **Increased Electrical Demand**: When your AC starts, it draws more current to start its compressor. In cases where your electrical system is not equipped to handle this load, it can lead to voltage drops, causing your lights to flicker.

2. **Circuit Overloads**: If your AC is on the same circuit as your lights, the combined load may exceed the circuit's capacity. This can result in poor performance from your lights, including flickering.

Potential Solutions

To mitigate the flickering lights issue, consider these tips:

Upgrade Your Electrical System

Consult an electrician to determine if your electrical panel needs upgrading. A panel with higher capacity can handle larger loads more efficiently, preventing flickering associated with high electrical demands.

Separate Circuits

Having your AC on a separate circuit can help alleviate the load on your lighting circuit. An electrician can help you run dedicated circuits for major appliances, ensuring stability in your home’s electrical system.

Preventive Measures

Beyond fixing existing flickering issues, here are additional strategies to protect your electrical system:

Regular Electrical Inspections

Schedule regular inspections of your electrical system by a qualified electrician. This process can help identify any potential problems before they lead to significant issues.

Upgrade Lighting Fixtures

Consider upgrading to energy-efficient LED lighting that can handle variable electrical loads better than traditional bulbs, reducing flickering incidents.

FAQ

Q: Is it normal for lights to flicker when the AC turns on?A: Yes, it can be normal due to the electrical load of the AC, but persistent flickering may indicate a larger issue that needs addressing.

Q: How can I fix flickering lights?A: Start by identifying if the AC is on the same circuit as the lights; consider consulting an electrician for further assistance and potential circuit upgrades.

Q: Should I worry about flickering lights?A: While occasional flickering can be normal, consistent flickering should be investigated, as it may signal an overloaded circuit or other electrical problems.