
False Fire Alarms can be disruptive and costly for any businesses, resulting in:
- Unnecessary evacuations and downtime
- Annoyed customers
- Fire brigade charges
- Unnecessary insurance claims
- Risks to those experiencing real emergencies
- Complacency and loss of confidence in the fire detection & alarm system
The good news is that by identifying and managing the common causes, most False Fire Alarms are preventable.
Common Causes & Prevention of False Fire Alarms
1.Fumes/Gases
Causes: Painting/Decorating, Vehicle Emissions, Cooking, Candles, Oil Fired Boilers, Cleaning/Sterilisation
Prevention:
- Use Heat Detectors where legislation and the risk allows for it e.g. in kitchens.
- Ensure doors stay closed and extract systems are working during cooking
- Always liaise with your Fire Alarm maintenance provider when undertaking any renovations or where you intend to have a change of use.
2.Steam
Causes: Dishwashers, Burco Boilers, Kettles, Showers, Steam Cleaning
Prevention:
- Consider changing devices to Multi-sensors or heat detectors where legislation and the risk allows.
- Keep doors closed when showering and use extractor fans.
- If temporarily using Burco boilers or kettles avoid placing these in close proximity to smoke detectors.
3.Smoking
Causes: Cigarette Smoke, Electronic Cigarette Vapours, Smoke from nearby areas.
Prevention:
- Clearly mark designated smoking areas.
- Remind staff and customers that electronic cigarettes can trigger smoke detectors.
- Ensure proper separation between smoking areas and other parts of the building.
4.Aerosols
Causes: Cleaning Products, Deodorants, Air Fresheners.
Prevention:
- Avoid spraying aerosols directly towards smoke detectors
- Exercise care when installing automatic air fresheners to ensure they do not dispense directly in the path of smoke detectors
- Educate staff
5.Hot Work
Causes: Welding, Soldering, Plumbing, Drilling, Grinding, Cutting, Sanding, Carpentry, Tiling
Prevention:
- Implement a permit system for tasks that generate smoke or dust.
- Brief external contractors on the Fire Detection & Alarm system in situ
- Protect smoke detectors in the area where works are taking place. If covering detectors during works it is essential that the covers are removed at the end of each working day.
6.Environmental
Causes: Weather, Humidity, Temperature Fluctuations, Insect Ingress, Moisture/Water Ingress
Prevention:
- Consider changing devices to Multi-Sensors or Heat Detectors where legislation and the risk allows in areas with frequent changes in air flow.
- If you are experiencing high levels of insect ingress (i.e. when tiny insects get into the detector devices), you can wipe the external housing of detectors using a cloth and insect repellent. (Never spray repellent directly on or in the direction of a detector)
- Maintain temperatures where possible
- Practice good building maintenance and carry out building repairs in a timely manner
7.Accidental or Malicious Damage
Causes: Staff, Customers, Visitors,
Prevention:
- Protect Fire Alarm Equipment with approved covers or cages especially in high traffic areas such as corridors etc.
- Use CCTV where necessary to deter malicious activations.
- Provide staff with Fire Safety Awareness Training
8.System Testing & Maintenance
Causes:Improper configuration of Fire Detection & Alarm System, Fire Alarm Testing, Maintenance of other Systems.
Prevention:
- Schedule Fire Alarm routine maintenance testing in advance and notify staff.
- If experiencing a high level of False Fire Alarms, contact your Maintenance Provider to discuss configuration.
Remember: If you Discover a Fire
Raise the alarm
Evacuate the premises
Call 999 or 112
Only tackle the fire if safe to do so
Be Smart. Be Prepared. Be Safe.







