Protect 2nd Generation Smoke + Carbon Monoxide Alarm
At Which? we lab test smoke alarms to uncover the best models that you can trust. Our reviews tell you the ones that respond quickly enough to all types of fire in British Standards tests, and the smoke alarms that can't be relied on.
Here, we give you vital advice on choosing, positioning and maintaining your smoke alarms correctly, so they will alert you and your family when you really need them.
Depending on the size and layout of your home, a heat alarm in the kitchen and optical smoke alarms in the common areas of each floor could be adequate.
You could add another layer of protection by installing optical smoke alarms in every bedroom. This can be important as studies have shown that sometimes children and older adults don't wake up when a smoke alarm on the landing goes off.
Interlinked smoke alarms could be a real advantage when there's a fire - if one alarm detects smoke, all the alarms sound. You could also place ionisation smoke alarms in the loft and areas such as living and dining rooms.
To get the best response from your alarm, it should go in the centre of the ceiling and away from obstructions or dead spaces, such as where the walls and ceiling join.
You should be able to hear it clearly across the whole space it is intended to cover, so bear this in mind as you look around your home and consider the risks.
You should consider whether you think members of your family would hear an alarm in the planned position from key areas, such as their bedroom. Plus whether anyone has needs that would better suit a different configuration – for example, a hearing impairment or a particularly heavy sleeper.
Smoke alarms need very little maintenance, but follow these simple steps to keep yours in good working order.
Test your alarm every week and, unless it has a 10-year integrated battery, change the battery annually.
We found that people aren’t checking their alarms as regularly as they should, with fewer than one in twenty Which? members checking their alarms regularly enough.
Just 4% of smoke-alarm owners told us that they run a weekly alarm check – which is recommended by the London Fire Brigade. Seven in ten owners admitted to checking their alarms only every six months or even less frequently than that. And 2% of owners admitted to never checking their alarms at all.
With products like this – where being in working order is absolutely critical but impossible to tell – running a check every week is the best way you can make sure your smoke alarm is primed and ready to let you know when there’s a fire. So add a reminder to your calendar or phone.
Regular beeps or chirps are a sign that the battery needs to be replaced. More frequent beeps or chirps - around one every 30 seconds - are likely to be a sign that the alarm has reached the end of its life and signals the time to buy a new one.
Keep the instructions to hand, they'll help you to interpret the noises your alarm makes.