Best Smoke & Carbon Monoxide Alarms — 5 years (2026)
8 smoke & carbon monoxide alarms matching warranty “5 years”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Kidde 7DCOC Carbon Monoxide Alarm, White vs FireAngel FA6120-INT-T2 Smoke Alarm Detector, White: Which Smoke & Carbon Monoxide Alarms Is Better? guide.
#1 Pick
FireAngel Smoke and Carbon Monoxide Alarm 2-Pack — SB1-R Toast Proof Smoke Alarm and FA3313 10-Year CO Detector- Standalone
- 5 years
£26.00
Pros
- Bundle covers both smoke and CO detection in one purchase
- "Toast proof" sensor reduces false alarms near kitchens
- 10-year sealed battery on the CO detector
Cons
- Two separate standalone units, not interlinked
#2 Pick
Kidde Smoke Alarm and CO Detector Bundle for Home — 10Y29 10 Year Battery Smoke Alarm and K5CO Battery Carbon Monoxide Detector with AA Batteries- Standalone
- 5 years
£25.00
Pros
- Bundles a 10-year smoke alarm with a separate CO detector
- Trusted long-standing safety brand
- Batteries included, ready to fit out of the box
Cons
- Two standalone units, not interlinked
#3 Pick
Aico Ei3016 Optical Smoke Alarm, 230V Mains Powered with 10-Year Rechargeable Battery Backup, White- Interconnectable
- 5 years
£54.99
Pros
- Mains powered with 10-year rechargeable lithium battery backup
- AudioLINK+ technology extracts diagnostic data via smartphone app
- Automatic dust compensation reduces false alarms
Cons
- Higher price than standalone battery-only smoke alarms
#4 Pick
FireAngel FP2620W2-R Pro Connected Smart Smoke Detector with 10-Year Life Battery, Interlink Fire Alarm for Home with App, White- Wireless Interlink
- 5 years
£44.99
Pros
- Wi-Safe 2 wireless interlink links with other Pro Connected alarms
- Sealed 10-year Panasonic battery, no replacements needed
- Optional app and gateway for remote notifications
Cons
- Full smart features require a separately sold Connected Gateway
#5 Pick
FireAngel Optical Smoke Alarm 2-Pack — FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button, Replacement for FireAngel ST-622/ST-620- Standalone
- 5 years
£22.16
Pros
- Twin pack covers two rooms in one purchase
- Sealed 10-year lithium battery, no replacements needed
- Test/silence button for easy false-alarm hushing
Cons
- Standalone units, no wireless interlink between the two alarms
#6 Pick
FireAngel FA3313-T2 Carbon Monoxide Alarm and Detector — 10-Year Sensor Life CO Alarm for Home with 1-Year Replaceable Batteries, Travel/Portable CO Detector, 2-Pack, White- Standalone
- 5 years
£36.00
Pros
- 10-year sensor life reduces long-term running costs
- Twin pack suits both kitchen and bedroom coverage
- Compact and portable, suits travel and caravans too
Cons
- Batteries are replaceable rather than fully sealed for 10 years
#7 Pick
Ei Electronics Ei650i Optical Smoke Alarm, White- Standalone
- 5 years
£24.20
Pros
- Continuous self-check reduces false alarms
- Easy to install with test button
- Trusted Ei Electronics/Aico safety brand
Cons
- Standalone unit, no wireless interlink
#8 Pick
Aico Ei3028 Mains Powered Multi-Sensor Heat & Carbon Monoxide Alarm- Mains-wired
- 5 years
£63.99
Pros
- Combines heat and CO sensing in one mains-powered unit
- Rechargeable lithium back-up keeps it working in a power cut
- Energy Class A+ rated
Cons
- Mains wiring installation, not a simple battery unit
At a glance
- Products
- 8
- Price range
- £22.16–£63.99
- Average price
- £37.17
- Average rating
- 4.54 / 5
- Total reviews
- 16,981
- Top brand
- FireAngel (4)
- Price tier split
- Budget2Mid-range6Premium0
- In stock
- 8
This selection of Smoke and Carbon Monoxide Alarms is designed to provide comprehensive protection for your home and family.
The core offering consists of alarms engineered with a 5-year warranty, reflecting the manufacturer's confidence in their durability and performance. This extended coverage provides peace of mind knowing that should any issue arise within this timeframe, you’re protected.
These alarms feature both smoke detection and carbon monoxide sensing capabilities, crucial for alerting occupants to potentially life-threatening situations. They are designed to meet UK safety standards and offer a robust solution for safeguarding your property and loved ones. These particular models are selected due to their compliance with the 5 year warranty requirement.
FAQ
What type of battery do these alarms use?
These alarms typically utilize replaceable lithium batteries, known for their longevity and resistance to corrosion. Refer to the product listing on Amazon UK for specific battery types and replacement recommendations.
Do these alarms require any special installation?
Installation is generally straightforward, designed for easy placement on ceilings or walls according to manufacturer instructions. Ensure a stable mounting surface and correct wiring if applicable – always consult the product documentation before installation.
Are the alarms tamper-proof?
Many models include features like end-of-life warnings and tamper switches designed to prevent false alarms and ensure ongoing functionality. Check the specific listing for details on your chosen alarm's security measures.
What is the range of detection for the carbon monoxide sensors?
The effective range of CO detection varies between models, typically ranging from 30 to 60 metres indoors. Refer to the product specifications on Amazon UK for precise details.
Are these alarms compatible with smart home systems?
Some models offer compatibility with select smart home platforms via Wi-Fi connectivity, allowing you to receive alerts and control settings remotely. Check the individual product listing on Amazon UK for compatibility information.
How frequently should I test the alarms?
It's recommended to test your smoke and carbon monoxide alarms at least once a month using the integrated test button. This ensures they are functioning correctly and that you’re familiar with their operation.
What happens if an alarm goes off?
Upon activation, the alarm will emit a loud audible signal. Immediately investigate the source of the alarm – smoke could indicate a fire, while carbon monoxide suggests a potential leak.
Are these alarms suitable for flats/apartments?
Most models are suitable for flat and apartment living; however, ensure you comply with local regulations regarding fire safety in multi-occupancy dwellings. Confirm the product’s suitability for your specific situation.
Do these alarms have a strobe function?
Certain models offer an integrated strobe light designed to provide visual alerts alongside audible alarms, particularly beneficial for individuals with hearing impairments. Verify if the selected alarm includes this feature.
What is the decibel level of the alarm sound?
The alarm’s sound output typically ranges from 85dB to 90dB, exceeding minimum UK regulatory standards for audible alarms. Consult the product detail page on Amazon UK for precise specifications.