CO Advice, Maintenance

Maintaining and testing your FireAngel Carbon Monoxide Alarm For Professionals

Cleaning and regularly testing your CO alarms is the best way to ensure they perform flawlessly for longer and ensure that any issues within the unit are detected, allowing you to act quickly and protect your home.

Testing your alarms:


We recommend that your smoke, heat and carbon monoxide alarms are tested weekly.


The large button on the smoke alarm is the test button which, when pressed, will initiate the testing sequence within the alarm. You’ll hear two loud sequences of four beeps, and an LED on the unit will flash, which shows you that everything is working within the alarm.

If the alarm does not sound or is beeping when it’s not being tested then we recommend you consult the manual provided with the unit – the battery within could be running low or the alarm could be coming to the end of it’s life so will need replacing.

 PLEASE NOTE: in order to comply to strict British standards all of our alarms have to have a replace by date. Once the alarm is past this date the sensor within will react to dangers less efficiently. We recommend you check the replace by date on the alarm and replace once reached.

 Cleaning your alarms:


We recommend this is completed every 3 months, or more often if suitable.


Using a soft brush adaptor on your vacuum run along the edges and the face of the alarm (please note – this may cause it to false alarm!). You can also use a soft cloth to clean the face of the alarm.

IMPORTANT: Do not use solvents or cleaners on your smoke alarm, as they may cause damage to the sensor or circuitry.

If there is any visible damage to the alarm or it is heavily stained or dusty we would recommend you replace the alarm as the sensor within could be damaged.

Find out more:

What technology can I find in FireAngel Carbon Monoxide Alarms?

Live in Scotland? The laws have changed – ensure you’re compliant!

What does BS5839-6 mean for my home?

What’s the best smoke alarm to protect my home?

I’m renovating my home – what smoke alarm do I need to install?

What is Carbon Monoxide and how can I protect my home against it’s dangers?