Burnt Smells in Your Mount Colah Home? Here's What It Means
There's a specific smell electricians know well: hot, acrid, unmistakably plastic. It's not something to sit on or investigate later.
Find the circuit if you can and switch it off at the board, then call (02) 9134 9029 straight away. Read the rest of this page after, not instead.
What a Burning Smell Actually Means
Nothing electrical is meant to run hot enough to smell. Insulation, plastic housings and connection points are rated for normal current, and that smell only shows up once something exceeds it.
Most often the cause is a joint arcing quietly or a component drawing more than its rating allows.
Think of the smell as an alarm going off early, well before smoke or visible damage would ever appear. Catching it here is the good outcome, not the worrying one.
Six Causes, From Common to Rare
- A loose connection arcing. Generates localised heat at a terminal or joint, releasing that hot-plastic smell.
- A circuit pushed past its rated load. The extra current heats the wiring and whatever it runs through.
- A failing appliance. Often the actual source, even though the smell seems to come from the wall.
- Ageing or damaged insulation. Breaks down with heat and time, especially in older wiring.
- A faulty switch or dimmer. Internal components degrade and generate heat under normal use.
- Rodent or pest damage to wiring. Less common, but a real cause of exposed, overheating conductors.
Is a Burnt Smell Dangerous?
Yes, every time, without exception. Plenty of other symptoms on this site have a low-stakes version; this one doesn't.
Call us immediately if you feel warmth at a switch or point, notice any discolouration, or the smell is building rather than fading.
A faint smell that comes and goes still counts. Heat that appears and disappears is often an early-stage fault rather than one that has settled or resolved.
What To Do Before We Arrive
- Identify the source if you can, without touching anything hot or discoloured.
- Switch off that circuit at the switchboard, or the mains if you're unsure which one.
- Unplug and move away anything near the smell, especially flammable materials.
- Call (02) 9134 9029 straight away and tell us where the smell is strongest and how it's changed.
How We Fix the Fault for Good
We treat a reported burning smell as urgent and get to it ahead of routine bookings.
On site, thermal imaging shows us the exact point running hot, so we're not opening up walls or fittings on a guess. That's faster and far less invasive.
Once we've found it, we isolate and repair the fault properly, whether that's a connection, a failed component, or damaged wiring that needs replacing.
Notifiable work is tested, signed off and lodged with the regulator before we consider it finished.
You'll also have the repair price agreed in writing up front, and photos of the completed job afterwards.
Why This Is Common in Mount Colah Homes
The suburb's older housing stock, much of it dating from the 1960s through the 1980s, means a lot of original wiring and fittings are decades past their intended service life.
Long-serving fixtures like the Mount Colah truck stop on the Pacific Highway, running since the 1950s, are a useful marker of just how much of this area's infrastructure predates modern standards.
Homes of a similar vintage often carry the same ageing insulation and connections, which is exactly the kind of degradation that produces a burning smell before anything else shows.
Renovations add another wrinkle. Extending or opening up a mid-century floor plan often exposes old wiring never designed for today's load, and disturbing it can accelerate a fault that was already developing quietly.
Preventing the Next Burning Smell
- Have older wiring assessed proactively, rather than waiting for a warning smell.
- Upgrade an original switchboard to modern breakers and safety switches.
- Keep power points and circuits off overload, so no single line runs closer to its limit than it should.
- Replace ageing switches, dimmers and fittings before they degrade further.
- Book fault-finding after any previous burning smell, even if it seemed to resolve on its own.
Other Faults We Chase Down
A burning smell sometimes turns up beside one hot power point, covered under a discoloured, warm socket, or a switchboard that's begun humming or buzzing, see a switchboard making noise.
If the smell arrived with a full loss of power, our guide to losing power across the house covers that pattern too.
We're also regularly out in Asquith, Berowra and Normanhurst.
Get in Touch Today Before It Gets Worse
A burning smell isn't one to leave until tomorrow. Call (02) 9134 9029 now and we'll treat it as urgent.
Common questions
Burnt Smell FAQs
Is a burning smell always an emergency?
Treat it as one until proven otherwise. A genuine electrical burning smell means something is overheating right now, and that can turn into a fire faster than most people expect.
What does an electrical burning smell actually smell like?
Most people describe it as hot plastic, or a sharp, acrid smell unlike burning wood or food. If you're unsure whether what you're smelling is electrical, treat it as electrical and call us.
Can I keep using the circuit while I wait?
No. Isolate it at the board and unplug anything nearby, then leave it off until we've had a look. Continuing to use a circuit that smells hot risks the fault getting worse.
Should I turn off the mains?
If you can't tell which circuit the smell is coming from, switching off the mains is the safest option. If you know the specific circuit, isolating just that one is usually enough.
How do you find the fault?
We use thermal imaging to find the exact point that's overheating, rather than guessing from the smell alone. That lets us isolate and fix the actual fault the first time.
Will the repair come with a certificate?
Yes, for any notifiable work. A Certificate of Compliance for Electrical Work is registered with NSW Fair Trading and passed to you once the fault is fixed and tested.