---
title: "Carbon Monoxide Detector — £5.0M/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/carbon-monoxide-detector"
last_updated: "2026-07-31T08:41:54.034Z"
locale: en
meta:
description: "Niche score 52/100 · £5.0M/yr market · 2.4M searches/yr · £12.51 avg price. Soft demand (-23.6% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £5.0M/yr market · 2.4M searches/yr · £12.51 avg price. Soft demand (-23.6% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Carbon Monoxide Detector — £5.0M/yr Amazon UK Niche (2026) - Flapen"
---
# **carbon monoxide detector**
**Worth a look**
Shows searches that convert (16.6% search→purchase), but soft demand (-23.6% this quarter) keeps it on the watch list.
Market size 97Growth 13Conversion 98Competition 23Returns 97Price range 38Avg price 54Brand share 40Review moat 25Quality gap 27
**Conversion**
**Incredible****16.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Incredible****£5.0M**
£5.0M/yr · 2.4M searches
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Good****£12.51**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****£6.75–£20.01**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****4,426.14**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-23.6%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, carbon monoxide detector is a £5.0M/yr Amazon United Kingdom market (2.4M searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan–Oct–Nov. Verdict: Worth a look — 52/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **carbon monoxide detector market data**
- **Units sold / yr**
- **300K–400K**
- avg 20,000–25,000/product
- **Revenue / yr**
- **£3.8M–£5.0M**
- units × avg price
- **Conversion rate**
- **16.6%**
- **Avg BSR**
- **#10**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **100%**
- **Out of stock**
- **6.3%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▲rising
**Sellers**
**29**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**13%**
- Fireangel36% - Kidde20% - Safeliveo9% - XINDUM8% - X-Sense8% - Fenary6% - Open — no brand owns it (3 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -23.6% search growth over the last 90 days.
80K60KSpike '24Black Friday '24Prime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Oct, Nov · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/carbon-monoxide-detector/trend)
## **Top carbon monoxide detector search terms**
- **carbon monoxide detector**1.3M/yr-30.0%12.7% conv. - **carbon monoxide alarm**391K/yr-14.6%15.1% conv. - **carbon monoxide alarms for home**146K/yr-7.0%12.7% conv. - **co2 detector**110K/yr-11.1%11.0% conv. - **fire angel carbon monoxide alarm**56K/yr+2.3%15.9% conv. - **carbon monoxide detectors**52K/yr-25.3%6.6% conv. - **fireangel carbon monoxide detector**23K/yr+34.9%16.0% conv. - **co2 monitor**48K/yr-34.0%2.2% conv. - **co alarm**38K/yr-22.5%12.4% conv. - **co2 alarm**41K/yr-30.8%13.5% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/carbon-monoxide-detector/search-terms)
## **Top carbon monoxide detector products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£497K20%£994K30%£1.5M40%£2.0M101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel Portable Carbon Monoxide Detector - CO Detector Monitor with Test Button Single**Fireangel**£11.94**4.7★9,145 rev](https://www.amazon.co.uk/dp/B0CKWGSX22) [2**Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home**Kidde**£11.08**4.6★33,828 rev](https://www.amazon.co.uk/dp/B07WSX4NCV) [3**Carbon Monoxide Detector with Digital Display CO Alarm with Replaceable Battery - 10 Year Sensor Life Portable Carbon Monoxide Alarm for Home with Memory Alarm Function 1 Pack(White).**Safeliveo**£11.03**4.7★610 rev](https://www.amazon.co.uk/dp/B0FLPR1P5X) [4**X-Sense Carbon Monoxide Detector Replaceable Battery Powered CO Alarm with Digital Display Portable Carbon Monoxide Alarm for Home with CO Peak Value Memory XC0C-SR 1-Pack**X-Sense**£10.80**4.7★4,929 rev](https://www.amazon.co.uk/dp/B0D66LK5NP) [5**Carbon Monoxide Detector Carbon Monoxide Alarm with PPM Display CO Alarm with Test Button Battery Powered CO Detector Monitor with 85 dB Audible for Home and Holiday(Batteries NOT Included)**Fenary**£7.94**4.5★794 rev](https://www.amazon.co.uk/dp/B0DJ87NLJ3)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**FUMIXTEX Carbon Monoxide Detector with LCD Display CO Alarms Replaceable Battery Powered 10 Year Sensor Life Portable CO Detectors for Travel 1 PCS**FUMIXTEX**£10.31**55 rev7mo ago](https://www.amazon.co.uk/dp/B0GCCZCVG6) [**Carbon Monoxide Detector with Digital Display CO Alarm with Replaceable Battery - 10 Year Sensor Life Portable Carbon Monoxide Alarm for Home with Memory Alarm Function 1 Pack(White).**Safeliveo**£11.03**610 rev11mo ago](https://www.amazon.co.uk/dp/B0FLPR1P5X) [**FireAngel FA6812 Digital Carbon Monoxide Detector with LCD Screen 10-Year CO Alarm Sensor Portable Carbon Monoxide Alarm for Home Travel Caravan**Fireangel**£18.56**1,727 rev1y ago](https://www.amazon.co.uk/dp/B0FDL31LVR) [**EIBEST Carbon Monoxide Detector Carbon Monoxide Alarm CO Detector With LED display And 85 Decibel Sound And Light Alarm**EiBEST**£6.75**251 rev1y ago](https://www.amazon.co.uk/dp/B0DM9S734J) [**Carbon Monoxide Detector Carbon Monoxide Alarm with PPM Display CO Alarm with Test Button Battery Powered CO Detector Monitor with 85 dB Audible for Home and Holiday(Batteries NOT Included)**Fenary**£7.94**794 rev1y ago](https://www.amazon.co.uk/dp/B0DJ87NLJ3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**FUMIXTEX Carbon Monoxide Detector with LCD Display CO Alarms Replaceable Battery Powered 10 Year Sensor Life Portable CO Detectors for Travel 1 PCS**FUMIXTEX**£10.31**4.6★**▲ 387%**](https://www.amazon.co.uk/dp/B0GCCZCVG6) [**Carbon Monoxide Detector with LCD Digital Display CE Certified CO Alarm with Sealed in 10 Year Battery Standalone Audible CO Detector for Home White 1 Pack**XINDUM**£13.88**4.6★**▲ 119%**](https://www.amazon.co.uk/dp/B0BNM7W8B1) [**Carbon Monoxide Detector with Digital Display CO Alarm with Replaceable Battery - 10 Year Sensor Life Portable Carbon Monoxide Alarm for Home with Memory Alarm Function 1 Pack(White).**Safeliveo**£11.03**4.7★**▲ 64%**](https://www.amazon.co.uk/dp/B0FLPR1P5X) [**Carbon Monoxide Detector with LCD Digital Display CE Certified CO Alarm with Sealed in 10 Year Battery Standalone Audible CO Detector for Home Black 1 Pack**XINDUM**£14.41**4.6★**▲ 45%**](https://www.amazon.co.uk/dp/B0BNM881ND) [**FireAngel FA3820 Carbon Monoxide Detector 10-Year Life Sealed Battery Carbon Monoxide Alarm for Home and Travel Portable CO Alarm Monitor 1-Pack**Fireangel**£18.73**4.6★**▲ 29%**](https://www.amazon.co.uk/dp/B0B9HC17ZG)
**~~View all trending →~~**
## **What buyers say about carbon monoxide detector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**19%
*“Good value for money”*
**Quality-Overall**18%
*“Good quality device”*
**Advertised Vs Actual Product**11%
*“As advertised”*
**Assembly/Installation**10%
*“Easily installed”*
**Ease Of Use**6%
*“Easy to read”*
**Size-Overall**6%
*“Great Gaget neat in size”*
**Compactness**4%
*“Compact design”*
**Efficiency**3%
*“So far works well”*
**Battery Life**3%
*“Has a long life battery”*
**Security**2%
*“Easy safety”*
### **What buyers complain about **
**Durability**16%
*“stopped working after 1.5 years of barely being used”*
**Battery Life**11%
*“battery only lasted 10 weeks”*
**Functionality-Overall**9%
*“think the unit isn't working”*
**Noise Level**5%
*“Very loud”*
**Quality-Overall**5%
*“Poor quality control”*
**Instructions/User Manual/Troubleshooting**4%
*“Neat device, poor documentation with incorrect information”*
**Ease Of Use**3%
*“not easy to read at all”*
**Size-Overall**3%
*“the backplate did not fit the unit”*
**Assembly/Installation**3%
*“Installation is a doddle”*
**Alarm/Timer Accuracy**3%
*“Alarm not working”*
### **Top return reasons **
**Functionality-Overall**23%
**Defective Material/Parts**17%
**Alarm/Timer Accuracy**14%
**Battery Life**5%
**Size-Overall**5%
**Touch/Button Controls**4%
**Noise Level**3%
**Quality-Overall**3%
**Compatibility-Overall**3%
**Product Condition**2%
## **Common questions**
- **Is carbon monoxide detector profitable to sell on Amazon United Kingdom?**
- The niche generates £5.0M/yr across 14 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -23.6%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the carbon monoxide detector niche?**
- 9 brands and 29 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in carbon monoxide detector?**
- Top complaints mined from reviews: Durability, Battery Life, Functionality-Overall. The return rate is 0.5%.
- **When does demand for carbon monoxide detector peak?**
- Demand peaks in Jan–Oct–Nov; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the carbon monoxide detector niche?**
- Listings span £6.75–£20.01; the average listing price is £12.51 (sweet spot $15–$100). The average incumbent carries 4,426 reviews — the moat a new listing must climb.
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