
Smoke & Fire AlarmInstallation
Mains-powered interlinked smoke, heat, and CO detectors professionally installed to BS 5839-6. Same-day service, full certification, and 12-month guarantee. Protect your family and comply with regulations.
Why Professional Fire Alarm Installation Matters
Smoke alarms save lives — but only when they're correctly positioned, properly powered, and reliably interlinked. A battery alarm stuck to the ceiling with adhesive is better than nothing, but it's not adequate protection for a modern home.
The limitations of battery-only alarms:
- Batteries die — and dead alarms protect nobody
- Standalone alarms don't alert you to fires on other floors
- Incorrect positioning leads to missed fires or constant false alarms
- Non-compliant systems can void insurance or fail landlord inspections
Professional mains-powered installation with battery backup eliminates these risks. When one detector triggers, every alarm in the house sounds simultaneously — giving you maximum warning time regardless of where the fire starts.
We install systems across all property types — from Victorian terraces in Croydon to modern apartments in Lewisham and rural homes near Edenbridge.
What We Install
Optical Smoke Detectors
For bedrooms, hallways, landings, and living rooms. These detect visible smoke from smouldering fires — the most common type in residential settings. Positioned on ceilings at optimal detection points.
Heat Detectors
For kitchens, garages, utility rooms, and loft spaces. Heat detectors trigger on temperature rise rather than particles, preventing false alarms from cooking steam or dust while still protecting against fire.
Carbon Monoxide Detectors
Essential near gas boilers, wood burners, open fires, and any fuel-burning appliance. CO is odourless, colourless, and lethal. Detection is the only warning you'll get. We position CO detectors at breathing height for fastest response.
Interlinked Wiring
All detectors are hardwired together so that activation of any single unit triggers every alarm in the property. This is critical in multi-storey homes where a kitchen fire may not wake someone on the top floor. Mains power with battery backup ensures operation during power cuts.
Integration with Existing Electrics
We connect alarm systems to your existing electrical installation, ensuring proper circuit protection and labelling at the consumer unit. For properties with older wiring, we assess capacity and recommend upgrades if needed.
Our Installation Process
From survey to certification, we handle everything to ensure your fire detection system is correctly specified, installed, and documented.
Free Survey
We assess your property layout, identify optimal detector positions, and recommend the right system for your needs.
System Design
We specify interlinked smoke, heat, and carbon monoxide detectors to meet current regulations and your property type.
Professional Install
Mains-powered detectors with battery backup hardwired into your electrical system. Clean installation with minimal disruption.
Full Testing
Every detector individually tested and interlink function verified. We ensure your system activates correctly throughout.
Certification
Full documentation including Minor Works Certificate. 12-month workmanship guarantee on all installations.
Why Choose 24/7 Electrical for Fire Alarms
Qualified, experienced, and thorough — we install systems that comply with regulations and actually protect your family.
Legal Compliance
Scotland already requires interlinked alarms. England is moving the same way. We install systems that meet and exceed current requirements including BS 5839-6.
Interlinked Systems
When one alarm sounds, they all sound. Critical in larger properties where a fire in one room may not be heard elsewhere. Mains-powered for reliability.
Heat & Smoke Detection
Optical smoke detectors for living areas, heat detectors for kitchens and garages. The right detector type in every location prevents false alarms.
Carbon Monoxide Protection
CO detectors installed near boilers, fireplaces, and fuel-burning appliances. Odourless and lethal — CO detection saves lives.
Landlord Compliant
Rental properties require working smoke alarms on every floor. We install regulation-compliant systems with documentation for your records.
Same-Day Service
Most installations completed in a single visit. Minimal disruption, clean finish, and immediate protection for your property.
Fire Alarm Installation FAQs
Common questions about smoke alarms, heat detectors, and fire detection systems.

Protect Your Home Today
Professional fire alarm installation from £300. Same-day service available across London and the South East.
