Smoke Alarms on the Sunshine Coast

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Licensed electricians based on the Sunshine Coast.

White smoke detector mounted on a white ceiling with a green gradient background — Chayser Electrical in Currimundi, QLD

Smoke Alarms Under Queensland Law

Queensland’s smoke alarm laws now set out exactly what must be installed and where.


Chayser Electrical carries out smoke alarm installation and replacement based on the current requirements and the changes coming into full effect on 1 January 2027. Homes and townhouses must have photoelectric smoke alarms that comply with AS 3786-2014, installed in every bedroom, in hallways that connect bedrooms and on each level of the property. All alarms must operate as one system, so activation in any room triggers every alarm throughout the dwelling. Power must be supplied by mains electricity with a 10-year battery backup, or by a non-removable 10-year battery.


If you’re unsure whether your home meets the current rules or upcoming requirements, call 0423 349 676 and we’ll help you work it out.

Smoke-filled room, smoke detector with red light activated, ceiling — Chayser Electrical in Currimundi, QLD

Frequently Asked Questions

  • Why do smoke alarms keep going off for no reason?

    False alarms are often caused by dust buildup, insects, steam from bathrooms or alarms being installed too close to kitchens or fans. Older alarms are more prone to nuisance triggers. Cleaning, repositioning or replacing the unit usually fixes the issue.

  • How long do smoke alarms last before replacement?

    Most smoke alarms have a lifespan of around 10 years. After that, the sensor can become less reliable even if the alarm still beeps or tests correctly. The manufacture date is usually printed on the unit and helps determine when replacement is due.

  • Do all smoke alarms need to match?

    Mixing different types or brands of smoke alarms can cause issues, especially with interconnection and reliability. Using compatible alarms across the home helps ensure they work together properly and reduces the chance of faults or inconsistent activation.

Smoke detector mounted on a ceiling, blurred cafe background with pendant lights — Chayser Electrical in Currimundi, QLD

What Compliance Actually Involves

In many homes, smoke alarms have been added over time with little consistency. Some are outdated, some aren’t linked, and some are simply in the wrong spots.


We assess what’s already there and replace alarms where needed to create a single, consistent setup across the home. That includes bedrooms, nearby hallways and each level of the property. Alarms are installed with correct spacing and power supply, then tested together so there’s no doubt they activate as a group. For rental properties and homes being sold, getting this sorted early avoids last-minute issues later on.


If your alarms haven’t been looked at in years, it’s usually worth reviewing them before it becomes urgent.