Why do my LED lights flicker?

It’s hard to deny: the popularity of LEDs has skyrocketed over the past 10 years. More than ever, homeowners are incorporating them into their decor because of their energy efficiency, long lifespan and versatility. 

However, it’s common for people to wonder, ‘why do my LED lights flicker?’. LED flickering can certainly be annoying, and it may indicate an underlying issue that needs to be addressed.

So join Light Supplier as we take you through the causes of LED flickering and what you can do to solve the problem.

Why do LEDs flicker?

To comprehend why LED lights flicker, it's essential to understand how they operate.

LEDs generate light through electroluminescence. This is distinct from incandescent bulbs, which rely on a heated filament. When an electric current passes through the semiconductor material in an LED, it emits photons, creating light.

This mechanism allows LED lights to be more energy-efficient and durable. However, LED lights can flicker for various reasons, including incompatible dimmer switches, voltage fluctuations, loose connections, overheating, and electrical interference.

Identifying the specific cause is crucial for resolving the issue.

1. Incompatible dimmer switches

Dimmer switches are commonly used to control the lighting intensity in a room. 

However, not all dimmer switches are compatible with LED lights. Using a non-compatible dimmer switch can result in flickering, and so can using a dimmer with a non-dimmable LED. 

Before purchasing an LED and dimmer, you should always read the labels on your fixtures to ensure compatibility. Look for a dimmer that exactly meets or exceeds the total wattage of all the light bulbs the dimmer will control. 

2. Voltage fluctuations 

LED lights are more sensitive to voltage fluctuations compared to traditional lighting options. 

Various factors, such as inadequate electrical infrastructure, power surges, or heavy machinery usage, can cause fluctuations in voltage. These fluctuations can lead to LED lights flickering. Installing voltage stabilisers or surge protectors can help mitigate this issue.

3. Loose connections 

Loose connections can also cause LED lights to flicker.

Whether it's a poor connection between the fixture and the bulb, or a faulty socket, unstable connections can interrupt the flow of electricity, resulting in flickering. Ensuring all connections are secure and properly tightened can resolve this problem.

4. Electrical interferences

Electrical interference can introduce irregularities in the electric current that powers LED lights, causing them to flicker. 

Sources of electrical interference include nearby power lines, electronic devices, or faulty wiring. Shielding cables, relocating electronic devices, or ensuring proper grounding can minimise electrical interference and reduce flickering.

How do I troubleshoot flickering LED lights?

To troubleshoot and resolve LED light flickering, follow these steps:

1. Check the compatibility of the dimmer switch with LED lights.
2. Verify the stability of the voltage supply.
3. Inspect all connections for looseness and tighten them if necessary.
4. Ensure proper cooling and ventilation for LED lights.
5. Identify and eliminate potential sources of electrical interference.

By systematically addressing each potential cause, you can effectively troubleshoot and resolve LED light flickering issues.

When should I consult an electrician?

While many flickering issues can be resolved with the troubleshooting steps, certain situations may require the assistance of a professional electrician. If you experience any of the following, it is advisable to consult an expert:

• Flickering persists despite troubleshooting efforts.
• Flickering is accompanied by other electrical issues, such as power surges or circuit breakers tripping.
• You are unsure about performing electrical maintenance or repairs yourself.

An electrician can identify complex electrical problems, offer appropriate solutions, and ensure the safety of your electrical system.

How do I prevent LED lights from flickering?

To prevent LED light flickering in the long term and maintain optimal performance, consider the following preventive measures:

• Regularly clean LED lights to remove dust and debris.
• Avoid using LED lights in enclosed fixtures unless they are explicitly rated for such use.
• Keep LED lights within their recommended temperature range.
• Use surge protectors to safeguard against power surges.
• Schedule periodic inspections by a qualified electrician to detect and address potential issues.

Choose Light Supplier for Reliable LED Lights!

Investing in quality is one of the best ways to ensure you avoid flickering LED lights. 

By choosing a reliable manufacturer, you can kit your home with exceptionally bright, ambient LED strip lights, LED under-cabinet lighting, LED pendant lights, and so on. 

Every light you need we can supply.