--- title: "Fire and smoke alarms in Colliers Wood | 5.0 Star · From £115" description: "Mains smoke alarm installation and testing by Bello Electrics Ltd across Merton, Wandsworth, Battersea, Clapham and Chelsea. · 5.0 Star from 145 reviews" canonical: "https://belloelectricsltd.co.uk/services/fire-and-smoke-alarms" --- # Fire and smoke alarms in Colliers Wood > Mains smoke alarm installation and testing by Bello Electrics Ltd across Merton, Wandsworth, Battersea, Clapham and Chelsea. · 5.0 Star from 145 reviews Smoke alarm installation and fire alarm testing by Bello Electrics Ltd provides compliant warning systems for domestic properties, with calls answered any time, day or night. ## Fire and smoke alarms starting prices Starting prices cover the installation of an individual detector on an accessible ceiling, with additional sensors added as required for your property layout. - Smoke alarm installation: from £115; £115 for up to 1 smoke, heat or carbon monoxide alarms, then £150 per additional smoke, heat or carbon monoxide alarms. - Fire alarm testing: Price on request - Covers the supply and mounting of mains powered optical smoke, heat or carbon monoxide units with battery backup - Covers interlinking compatible units across hallways, landings and risk areas - Additional charges apply per extra detector required beyond the initial base unit - Making good extensive decorative chases or replacing damaged containment from previous fittings is not covered ### Within the agreed scope - Positioning optical smoke alarms in circulation spaces and escape corridors - Mounting dedicated heat alarms in kitchen and cooking areas - Installing carbon monoxide alarms near boilers and solid fuel appliances - Connecting units to mains power with secondary battery backup - Establishing hardwired or radio frequency interlinks between all detectors - Testing the sounder outputs, backup batteries and test buttons on each unit ### Confirm separately - Plastering, painting or surface redecoration following cable runs - Upgrading non-compliant commercial grade fire panels or call point loops - Repairs to faulty general wiring discovered during circuit connection ## Smoke alarm installation across South West London Mains powered detection gives early warning across all levels of a property, protecting occupants and satisfying rental regulations. - **Domestic detection requirements:** Rental homes and private properties need working smoke detection on circulation routes and heat detectors in kitchens. We install optical and heat units that communicate across the property when triggered. - **Period properties and conversions:** Cottages around Shaftesbury Park in Battersea and conversions along Queenstown Road often require wireless interlinks between mains units to avoid damaging historic plasterwork while meeting safety standards. - **Carbon monoxide protection:** Rooms containing fuel burning appliances such as gas boilers or log burners require dedicated carbon monoxide detection installed at the correct height and distance from the combustion source. ## What happens on the day Visits are scheduled in advance so detector locations can be accessed cleanly and power isolated safely. - **Clearing working positions:** Please ensure clear floor access beneath planned ceiling positions in hallways, landings, kitchens and utility spaces so ladders can be set up without obstruction. - **Power isolation and wiring:** Power to the relevant lighting or alarm circuit is isolated at the consumer unit while bases are mounted and cables connected. - **Commissioning and walk through:** Once installed, the interconnected network is tested from each device to verify that every sounder operates simultaneously throughout the property. ## How booking works 1. **Tell us about the job:** Tap Book Now and describe the work in the chat. Photos help. 2. **Get your price:** You see your price in the chat. A set price is paid at checkout; any other job is quoted first. 3. **Choose your visit:** Give your address and when you are free, and the visit is arranged. ## Fire and smoke alarms questions ### Which type of detector belongs in the kitchen? Kitchens require a dedicated heat alarm rather than an optical smoke alarm. Heat alarms monitor rapid temperature changes instead of airborne particles, which prevents false triggers from normal cooking steam and smoke. ### Why do smoke alarms need to be interconnected? Interlinking ensures that when a detector on the ground floor senses fire, all alarms across upper landings and bedrooms sound immediately, giving occupants everywhere the earliest possible warning. ### Can new alarms be fitted without cutting into decorative ceilings? Yes. Where routing new cables between floors would disturb decorative mouldings or ceiling finishes, mains powered alarms with secure radio frequency interlinks allow units to communicate without interlinking wires. ### How often do mains smoke alarms need replacing? Most alarm heads have a working sensor life of ten years from the manufacture date stamped on the base, after which the entire unit should be replaced to maintain accurate detection. ## Business facts - Service area: Colliers Wood, Tooting, Streatham, Balham, Wandsworth, Putney, Battersea, Clapham, Oval, Brixton, Vauxhall, Pimlico, Chelsea, South Kensington, Mayfaair, Fulham - Hours: Calls answered 24/7 - Phone: +447455213345 - Email: info@belloelectricsltd.co.uk - Insurance: Public liability £5M, Professional indemnity £1M - Qualifications: BS7671; Testing and inspection; Initial verification; EV charging; PAT Test ## Book or ask a question - [Book Now](https://belloelectricsltd.co.uk/#chat) ## Related services - [Emergency lighting](https://belloelectricsltd.co.uk/services/emergency-lighting-testing) - [Cooker, oven and immersion electrics](https://belloelectricsltd.co.uk/services/appliance-connections)