Why Are Your Lights Flickering?
Knowing how to stop flickering lights starts with understanding what’s causing them in the first place. In most Victorian homes, flickering lights are a symptom of one of four things: a faulty globe, a loose connection, an overloaded circuit, or a deeper wiring issue. Identifying the cause early can save you money — and keep your home safe.
Flickering is more than just annoying. In some cases, it signals a serious electrical fault that can lead to arcing, overheating, or even a house fire. That’s why it’s worth taking the problem seriously rather than waiting to see if it sorts itself out.
Common Causes of Flickering Lights in Victorian Homes
Victoria’s housing stock is incredibly diverse — from heritage-listed weatherboards in Geelong’s inner suburbs to newer builds along the Bellarine Peninsula. Each comes with its own set of electrical quirks. Here are the most common culprits behind flickering lights:
- Incompatible dimmer switches: Many older dimmer switches aren’t compatible with modern LED globes, causing a persistent flicker or buzz.
- Loose globe or fitting: A globe that isn’t seated properly in its fitting will make intermittent contact, producing a flicker.
- Faulty or ageing wiring: Homes built before the 1980s often have older wiring that degrades over time, leading to loose or corroded connections.
- Overloaded circuits: Running high-draw appliances — like a reverse-cycle air conditioner during a Victorian summer — can cause voltage fluctuations that make lights flicker.
- Loose connections at the switchboard: A loose neutral or live wire at the switchboard can cause flickering across multiple circuits simultaneously.
- Voltage fluctuations from the grid: Occasionally, the issue isn’t in your home at all — supply voltage from your energy distributor may be unstable.
How to Stop Flickering Lights: Simple DIY Checks First
Before calling a licensed electrician, there are a few safe checks you can do yourself. These don’t involve touching any wiring — just basic troubleshooting any homeowner can manage.
- Replace the globe: Turn off the light, allow it to cool, then swap the globe for a new one. If the flickering stops, you’ve found your fix.
- Check the fitting: Gently tighten the globe in its socket. A loose fit is a surprisingly common cause of flickering, especially in bayonet-style fittings.
- Test on a different circuit: Plug a lamp into a different power point on a different circuit. If it stops flickering, the original circuit may be overloaded or faulty.
- Upgrade your dimmer switch: If you’ve recently switched to LED globes, replace your old dimmer with an LED-compatible trailing-edge dimmer. This alone resolves flickering in a large number of cases.
- Note when it happens: Does the flickering coincide with your air conditioner, washing machine, or oven switching on? That points to a load-related voltage dip rather than a wiring fault.
These steps are safe, require no electrical knowledge, and can resolve a surprising number of flickering issues without any professional intervention.
LED Globes and Dimmer Compatibility in 2026
One of the most common reasons Victorian homeowners experience flickering lights today is a mismatch between LED globes and older dimmer switches. LEDs draw far less current than the halogen or incandescent globes that older dimmers were designed for, which causes erratic behaviour at low brightness settings.
The solution is straightforward: replace your existing dimmer with a quality LED-compatible model. Look for a trailing-edge (or leading-edge) dimmer that lists your specific globe’s wattage range on the packaging. You can also check the globe manufacturer’s compatibility list before purchasing. This is a licensed electrical job in Australia — dimmer replacement must be carried out by a qualified electrician.
Voltage Fluctuations and Your Switchboard
If multiple lights across different rooms are flickering simultaneously, the problem is likely upstream — either at your switchboard or with the incoming supply voltage. Under AS/NZS 3000 (the Australian Wiring Rules), all electrical installations must maintain safe and stable connections. Loose terminals at the switchboard can cause exactly this kind of widespread flickering.
Voltage in Australian homes should sit between 216V and 253V (nominally 230V). If your supply voltage is consistently outside this range, contact your energy distributor — in Victoria, that’s likely AusNet Services, Powercor, or CitiPower. They’re responsible for the network up to your meter, and they can investigate supply-side issues at no cost to you. For anything beyond the meter, a licensed electrician needs to assess your switchboard and internal wiring.
When to Call a Professional
Some flickering light problems are genuinely dangerous and must be handled by a licensed electrician. Don’t delay if you notice any of the following:
- Flickering that affects multiple circuits or rooms at once
- Lights that flicker when large appliances switch on or off
- A burning smell, discolouration around a light fitting, or warm switch plates
- Frequent tripping of circuit breakers alongside the flickering
- An older home with original wiring that hasn’t been inspected in years
These are all signs of potentially serious faults — loose connections, deteriorated wiring, or an undersized switchboard — that carry a real risk of electrical fire. In Victoria, all electrical work beyond replacing a globe or a power board must be carried out by a licensed electrician under the Electricity Safety Act 1998 (Vic).
The team at SmartPower Electrical services homes across Victoria, from Geelong’s suburbs to the Bellarine Peninsula and surrounding areas. If you’re dealing with persistent or worrying flickering, reach out to SmartPower Electrical for a thorough inspection and a lasting fix.
Conclusion
Flickering lights are one of those problems that range from a simple globe swap to a serious wiring fault — and knowing the difference matters. Start with the easy DIY checks: replace the globe, check the fitting, and consider whether a dimmer upgrade is needed. If the flickering persists, affects multiple rooms, or comes with any warning signs like burning smells or tripping breakers, it’s time to call a licensed electrician.
Understanding how to stop flickering lights in your Victorian home doesn’t have to be complicated. Work through the logical steps, don’t ignore the warning signs, and get professional help when the situation calls for it. SmartPower Electrical is here to help — contact us today for expert, reliable electrical advice and repairs across Victoria.
Frequently Asked Questions
Is it safe to ignore flickering lights?
It depends on the cause. A single globe flickering due to a loose fit is low risk and easy to fix yourself. However, flickering that affects multiple lights, happens alongside tripping breakers, or comes with a burning smell should never be ignored — these are signs of a potentially dangerous electrical fault that needs urgent professional attention.
Can I fix flickering lights myself in Victoria?
You can safely replace a globe, tighten a fitting, or swap a power board yourself. However, any work involving wiring, switchboards, or replacing a dimmer switch must be done by a licensed electrician under Victorian electrical safety regulations. Attempting unlicensed electrical work is illegal and can void your home insurance.
Why do my LED lights flicker on a dimmer switch?
Most older dimmer switches were designed for halogen or incandescent globes and aren’t compatible with LEDs. The mismatch causes the globe to flicker, buzz, or drop out at low settings. Replacing the dimmer with an LED-compatible model — a job for a licensed electrician — almost always resolves this issue.
How do I know if my switchboard is causing the flickering?
If flickering occurs across multiple rooms or circuits at the same time, especially when large appliances switch on, your switchboard or incoming connections may be at fault. Loose terminals, an ageing switchboard, or an undersized main switch are common culprits in older Victorian homes. A licensed electrician can inspect and test your switchboard to identify the problem. For more about what we do, visit our homepage.