Electrical · Electrical
Test and Clean a Smoke Alarm
Repair summary
Test smoke alarms monthly by pressing the test button until they beep. Once a year, vacuum the unit through the slots with a brush attachment to clear dust and insects that cause false alarms.
Likely issue
Dust build-up or end-of-life unit
DIY difficulty
1/5
Estimated DIY cost
$0
Estimated tradie cost
$120 (callout)
Tools required
- Step ladder
- Vacuum with brush attachment
Materials required
No additional materials needed.
Step-by-step instructions
- Climb a stable ladder and hold the test button for 5 seconds.
- Test smoke alarms monthly by pressing the test button until they beep. Once a year, vacuum the unit through the slots with a brush attachment to clear dust and insects that cause false alarms.
Safety warnings
Hard-wired (240V) smoke alarms must be installed or replaced by a licensed electrician. All alarms must be replaced every 10 years — check the date on the back.
When to call a tradie
Call a licensed tradie if the work is outside the scope of this guide, involves regulated trades (electrical, gas, structural, waterproofing), or if you discover hidden damage. A professional will typically charge $120 (callout).
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