Why Do Lights Flicker When the AC Comes On?: 1 Minute to Understand the Causes of Flickering Lights During AC Start-up

Have you ever noticed your lights flickering when the air conditioning (AC) kicks on? This common phenomenon can be both perplexing and annoying. Let’s dive into why this happens.

When an AC unit turns on, especially in older systems, it requires a surge of electricity to start. This sudden demand can cause a temporary drop in voltage, leading to flickering lights. It’s similar to what happens when multiple appliances are used simultaneously on the same circuit.

Electrical Load and Voltage Drop

One of the primary reasons for flickering lights during AC start-up is the electrical load. When your AC compressor engages, it draws more power than when it's running steadily. This increased load can strain your circuit, resulting in voltage drops that affect the lighting in your home.

If your home is equipped with a lower capacity electrical panel or if the wiring is outdated, the lights might flicker more noticeably. In such cases, using other appliances at the same time can further exacerbate the issue.

Inadequate Wiring or Circuit Issues

Another potential cause is inadequate wiring or circuits that are not optimally designed for your home’s electrical load. If the gauge of the wire is too small for the amperage being drawn by your AC unit, it may not be able to handle the load, causing flickering lights.

Additionally, loose connections in your circuit can create intermittent issues where the lights flicker when high-demand appliances, like an AC, kick on.

Potential Solutions

To address this flickering issue, consider a few potential solutions. Upgrading your electrical panel to accommodate your home’s needs could be beneficial. Also, hiring a licensed electrician to inspect and, if necessary, replace outdated wiring can prevent future problems.

Conclusion

Flickering lights during AC operation can be a symptom of more significant electrical issues within your home. It is essential to address these problems promptly to ensure safety and maintain a reliable electrical system. Regular maintenance and inspections can help mitigate potential hazards and enhance the performance of your home's electrical systems.

FAQ

Q: Is flickering a serious issue during AC start-up?A: It can indicate underlying electrical problems. Regular checks by a professional are recommended.

Q: Can I fix flickering lights myself?A: While basic troubleshooting can be done, it's best to consult a licensed electrician for safety.

Tips 1:

Consider installing a dedicated circuit for your AC unit to reduce the strain on other circuits and improve overall electrical performance.

Tips 2:

Invest in surge protectors to safeguard your electronics from voltage fluctuations caused by AC start-up.