A smoke alarm usually gets attention when a date is looming: a new tenant moving in, a settlement, or a unit that has started chirping overnight. NG Elec installs and replaces smoke alarms for homes, rental properties and small commercial premises across Adelaide, from a single unit swap to a full set of interconnected alarms. Every alarm is fitted to comply with AS 3786 and tested before we leave.
What suits a property depends on how it is wired, when it was built, and whether it is owner occupied or leased. Our licensed electricians assess the existing setup, confirm how many alarms the layout needs and where they belong, then install and test the lot in one visit.
Alarms are one part of a property’s electrical safety. Where a board has no room for a dedicated alarm circuit, or the wiring behind it is past its useful life, we can quote the alarm work together with a switchboard upgrade so it all happens on the one visit.
In South Australia, smoke alarm requirements depend on the property’s age and what has happened to it since. Homes sold or rented from 1 February 1998 onward must have either 240V mains-powered alarms or alarms powered by a 10-year non-removable lithium battery. A replaceable-battery alarm is only acceptable in an older home that has not been sold or leased since then. This is why the requirements often come up during settlement or before a new tenancy begins. If you need smoke alarm installation in Adelaide, choosing the right alarm for the property is an important part of staying compliant.
Two rules apply to every property regardless of age. Alarms must comply with AS 3786, and every alarm has a 10-year service life stamped on the housing, after which it must be replaced. Landlords are responsible for meeting these requirements in rental properties, so the alarm type is worth confirming before a tenant moves in. The current requirements are published by the SA Metropolitan Fire Service, and we follow them on every job.
Hardwiring an alarm is licensed electrical work, so one of our electricians runs the circuit, mounts the units and completes the testing. NG Elec is a Master Electricians accredited business with 20+ years of industry experience behind the team, and every installation is tested and left in working order before the van leaves the property. Workmanship carries our lifetime warranty.
Our own electricians handle the wiring, the alarm and the testing.
Every alarm we supply meets the standard alarms must be certified to.
We confirm the scope and the price before any work starts.
Scheduled maintenance customers get a discount on additional works.
A straightforward replacement in an accessible home is usually a short visit. Access is the variable that moves it: a two-storey home, a raked ceiling or a property with no roof space takes longer than a single-storey home with a manhole.
For a property being sold or leased, a hardwired alarm is the stronger long-term choice because it draws on the property’s power and cannot be left flat by a removed battery. A 10-year lithium alarm is the practical answer where there is no accessible ceiling cavity to run a cable through, or where a tenanted property needs alarms today.
| What to weigh up | Usually hardwired | Usually 10-year battery |
|---|---|---|
| Ceiling access | Roof space or cavity available | No accessible cavity to run cable |
| Property use | Long-term rental or owner occupied | Interim fix, or an apartment with concrete ceilings |
| Number of alarms | Three or more, interconnected | One or two units |
| Other electrical work booked | Switchboard or rewiring underway | No other work planned |
What affects the cost is the number of alarms, whether the ceiling can be accessed, and whether the switchboard has space for a dedicated circuit. We put the scope in writing before starting so there are no surprises on the invoice.
NG Elec works across Adelaide and the surrounding council areas, with a strong base through Unley, Burnside and Mitcham, out to Marion, Holdfast Bay, West Torrens and Onkaparinga, and further afield into the Adelaide Hills, Mount Barker, Victor Harbor and Yankalilla. Alarm work is often booked alongside home electrical repairs or an ongoing property maintenance schedule for landlords and agents managing several addresses. Where a board is full or ageing, a switchboard upgrade is quoted with it, and tenancies and offices are covered by our commercial electrical team.
A compliant set of alarms is one of the cheapest pieces of protection a property has, and it takes one visit to get right. Tell us the address, the number of bedrooms and whether the property is tenanted, and NG Elec will quote the alarm work and install it at a time that suits. Every job is completed by our licensed electricians and tested before we leave.
