Hardwired smoke alarms in Warragul homes

A Warragul house built, largely renovated or extended after 1 August 1997 needs smoke alarms wired to 240 volt mains power with a backup battery, and one built or extended after 1 May 2014 also needs those alarms interconnected so they sound together. Homes older than 1997 can legally run on battery alarms, although Fire Rescue Victoria recommends hardwired, interconnected alarms whenever you replace them. Any mains-powered alarm must be fitted by a qualified electrician.

What does Victorian law require for smoke alarms in a house?

Fire Rescue Victoria sets out two placement rules that cover houses, units, flats and townhouses. There must be at least one alarm on every level of the home, and there must be an alarm between each sleeping area and the remainder of the dwelling. Every unit has to comply with AS 3786, the Australian Standard for smoke alarms. The Fire Rescue Victoria smoke alarm page is the plain summary of these duties for owners.

The minimum type of alarm depends on when the house was built, or when it was last largely renovated or extended:

Built, largely renovated or extended	Minimum alarm type (FRV)
Before 1 August 1997	Stand-alone 9 volt battery alarms
After 1 August 1997	Hardwired to 240 volt mains, with a backup battery
After 1 May 2014	Hardwired to mains, backup battery, and interconnected

Consumer Affairs Victoria uses the same 1997 dividing line for rented homes. If you lease the property out, the yearly alarm check and the repair duties sit with the rental electrical safety checks service, and the printable rental safety checklist lists what an agent should keep on file.

Why would an owner-occupier go past the legal minimum?

The law sets a floor. FRV’s own advice is broader: it suggests an alarm in every bedroom and in each living area, rather than only in the hallway, because a closed bedroom door can keep smoke away from a hallway unit until a fire has grown. It also says to replace each alarm once it reaches ten years old, and its best grade is a set of wireless interconnected alarms with 10-year lithium backup batteries, since a single alarm going off triggers the rest of the house.

Typical reasons Warragul owners make a smoke alarm enquiry:

• the alarms are older than ten years, or nobody knows when they went in
• a unit gives an occasional single chirp, which FRV says can mean a low battery or a faulty alarm
• a renovation or rear extension is planned, which can move the home into a later build-date category
• a converted garage, sleepout or new wing is being used as a bedroom and has no alarm of its own
• the family wants every alarm to sound at once, particularly in a two-storey home with bedrooms upstairs
• the house is being sold, or being prepared for a tenant

Battery, long-life or hardwired: which option suits your house?

FRV grades alarm types as good, better and best. The table below puts those grades beside the electrical work each option needs.

Option	Power	Electrician
9 volt battery alarm	Replaceable battery	No
10-year lithium alarm	Sealed long-life battery	No
Hardwired alarm	240 volt mains plus backup battery	Yes
Hardwired and interconnected	Mains plus backup battery	Yes

• 9 volt battery alarm: the battery is swapped yearly, and this is FRV’s lowest grade.
• 10-year lithium alarm: there is no yearly battery change, and this is FRV’s middle grade.
• Hardwired alarm: the minimum for homes after August 1997.
• Hardwired and interconnected: the alarms are linked by cable or a wireless module. This is the minimum after May 2014, and FRV’s top grade is wireless interconnected alarms with a 10-year lithium backup.

Changing a battery is something anyone can do. Removing, moving or connecting a mains alarm is electrical work, and CAV is clear that a hardwired unit goes in by a qualified electrician only. If your home is post-1997 and someone suggests pulling out a dead hardwired alarm and sticking up a battery one in its place, that leaves the house short of the minimum for its age. When you are ready, you can describe your current alarms in an enquiry and a local electrician will tell you which upgrade fits.

What does a careful electrician check before quoting?

Expect questions about these points, either by message or on site:

1. The manufacture date printed on each existing alarm, and whether the brand’s replacement heads still fit the existing bases.
2. Whether the alarms run on a dedicated circuit or share one with lighting, and whether that circuit has safety switch protection at the board.
3. The ceiling material: plasterboard, timber lining, raked or flat, and how much roof space there is to run cable.
4. Where each alarm sits relative to bedrooms, living rooms, the kitchen and bathrooms, since steam and cooking fumes cause false alarms.
5. Whether wireless interconnection makes more sense than cutting into a finished ceiling to run new cable.

Some requests will be turned down. An electrician will not wire a battery-only alarm to the mains, and should not leave a mains alarm in place without its backup battery. Where the original house wiring is in poor shape, the advice may be to deal with that first; the house rewiring page explains how that work is assessed.

How is a smoke alarm upgrade carried out?

For a straightforward replacement in a single-storey home, the order of work usually looks like this:

1. Power to the alarm circuit is turned off and isolated at the switchboard.
2. The old heads and bases come down, and the cable at each point is inspected.
3. New bases are fixed to the ceiling at the agreed positions and connected.
4. Interconnection is made, either by a cable between alarms or by pairing wireless modules.
5. Power is restored, backup batteries are confirmed, and each alarm is tested so that pressing one sets off the others.
6. You are shown how to test and silence the alarms, and you receive the Certificate of Electrical Safety for the electrical work.

Adding alarms in rooms with no existing wiring takes longer, especially in a two-storey house where cable must travel between floors without opening walls.

What does a hardwired smoke alarm cost in Warragul?

A published Melbourne electrician price guide puts a supplied and installed smoke alarm at $105 to $260 per alarm. Those figures come from metropolitan pricing, so use them as a starting point rather than a local quote. Travel out to a rural block beyond Warragul, high or raked ceilings, a cable run between storeys, or linking new alarms with existing ones of another brand can each move a price toward the top of the band or past it. Ask for the alarm brand, the number of units and whether interconnection is included to be written into the quote so two prices can be compared fairly. The Warragul electrical cost guide sets this band beside the other common household jobs.

Who can install the alarms, and what paperwork should you get?

Energy Safe Victoria advises homeowners to engage a registered electrical contractor, never to do their own electrical work, and to get a Certificate of Electrical Safety once the job is finished. The rules on when that certificate must reach you are set out in the certificate of electrical safety guide. Keep it with the house records, because a buyer or a future electrician may ask for it.

This website takes the enquiry only. An independent licensed electrician in the Baw Baw area reads it, prices the job and fits the alarms under their own licence, as explained on the about page.

How does this apply to homes around Warragul and Trafalgar?

Baw Baw towns hold a wide spread of building ages, from railway-era houses in central streets to estate homes finished in the last few years. Owners of older homes in Warragul, Yarragon and Trafalgar are the most likely to still have battery units, and that is lawful while the house keeps its pre-1997 status. A major renovation or an extension is the moment to check whether the alarm requirement has changed, so raise it with the builder and the electrician early rather than after the plaster is up.

Newer homes in the Warragul and Drouin growth areas built after May 2014 should already have linked mains alarms. The usual job there is replacement at the ten-year mark, or adding units to a room the family has turned into a bedroom.

Next step: send a smoke alarm enquiry

Put these details in the form so the electrician can price it without guessing:

• the number of levels and bedrooms, and any rooms used for sleeping that are not true bedrooms
• the date printed on one existing alarm, and whether it is hardwired or battery
• a photo of one alarm and of its base with the head removed, if that is easy
• the ceiling type and whether there is roof space access
• whether you want every alarm interconnected
• the suburb, and whether the home has been renovated or extended

Then send your smoke alarm upgrade details and the electrician who picks it up can confirm the alarm count and price.

Send a job enquiry