Smoke alarms save lives – it's as simple as that. Having working smoke alarms dramatically increases your chances of surviving a house fire. This guide covers the different types available, where to install them, and how to maintain them properly.
Types of Smoke Alarm
Ionisation Alarms
Best at detecting fast-flaming fires (paper, wood). Less effective with slow, smouldering fires. Can be triggered by cooking. Generally the cheapest option.
Optical (Photoelectric) Alarms
Better at detecting slow, smouldering fires (furniture, electrical). Less prone to false alarms from cooking. Recommended for hallways and living areas.
Heat Alarms
Detect temperature rise rather than smoke. Ideal for kitchens where smoke alarms would false alarm. Don't use as the only alarm – they respond slower than smoke alarms.
Combined Optical/Heat
Offer the benefits of both types. Good all-round protection. More expensive but versatile.
Power Options
Battery-Powered
Easy to install anywhere. Require regular battery replacement (or use 10-year sealed batteries). Good for renters or as additional alarms.
Mains-Powered with Battery Backup
Most reliable option. Always powered but work during power cuts. Required in new builds and major renovations. Should be interlinked.
Interlinked Alarms
When one alarm sounds, they all sound. Essential for larger homes where you might not hear a distant alarm. Available in wired or wireless versions.
Legal Requirements
England (from October 2022)
- Smoke alarm on every storey with living accommodation
- Carbon monoxide alarm in rooms with fixed combustion appliances (except gas cookers)
- Landlords must ensure alarms are working at the start of each tenancy
Scotland
- Interlinked smoke alarms in living rooms, hallways, and landings
- Heat alarm in kitchen
- Carbon monoxide alarm where there's a carbon-fuelled appliance
- Applies to all homes, not just rentals
Where to Install
- Hallways and landings: Optical smoke alarms
- Living rooms: Optical smoke alarms
- Bedrooms: Optical smoke alarms (especially if you smoke or use electric blankets)
- Kitchen: Heat alarm (not smoke alarm)
- Garage: Heat alarm
- Near boiler/fire: Carbon monoxide alarm
Placement Tips
- Mount on ceiling, at least 30cm from walls
- If wall-mounted, 15-30cm below ceiling
- Avoid corners where air doesn't circulate well
- Keep away from bathrooms (steam causes false alarms)
- Don't place near windows, doors, or air vents
Maintenance
- Test monthly: Press the test button to check it sounds
- Replace batteries annually: Unless using 10-year sealed units
- Clean regularly: Vacuum around the alarm to remove dust
- Replace every 10 years: Sensors degrade over time
- Never disconnect: If false alarming, address the cause, don't remove the alarm
Professional Installation
For mains-powered interlinked systems, professional installation is recommended. This ensures:
- Correct placement for maximum protection
- Proper electrical connection
- All alarms interlinked correctly
- Compliance with regulations
Our smoke alarm installation service provides complete fire detection systems for homes.
Conclusion
Smoke alarms are your first line of defence against fire. Ensure you have the right types in the right places, test them regularly, and replace them when needed. For the best protection, consider a mains-powered interlinked system professionally installed.
Need Smoke Alarms Installed?
Professional installation of interlinked smoke and heat alarms.