Co2 Monitor
Co2 Monitor shows low returns (0.6%), but soft demand (-31.3% this quarter) keeps it on the watch list.
Flapen Score
Is Co2 Monitor profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Co2 Monitor is a £86K/yr Amazon United Kingdom market (107K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Worth a look — 50/100.
Co2 Monitor: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -31.3% over the last 90 days and 3.7% of searches end in a purchase.
£86K
revenue / yr
Who owns the niche?
The top 5 brands hold 66% of demand, so 34% of the market is open.
34%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.1★ — the gap to enter on.
0/100
page quality · 19 products
Top Co2 Monitor products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
SwitchBot CO2 detector with Built-in Hygrometer Temperature Humidity Monitor with carbon dioxide monitor Bluetooth CO2 Monitor 2-Year Data Storage SwitchBot Hub Required for WiFi Function
- Price
- £44.88
- Rating
- 4.5/5
- Reviews
- 1,113
- Age
- 1y ago

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
- Price
- £11.94
- Rating
- 4.7/5
- Reviews
- 9,145
- Age
- 2y ago

Air Quality Monitor Indoor Carbon Dioxide Monitor with LCD Display Carbon Dioxide Detector CO2 Monitor 5 In 1 Air Pollution Tester for Home Kitchen Office Car
- Price
- £14.43
- Rating
- 3.4/5
- Reviews
- 13
- Age
- 11mo ago

Kidde 5CO Carbon Monoxide Alarm and Detector with AA Batteries - 10 Year Sensor Life CO Alarm for Home
- Price
- £11.08
- Rating
- 4.6/5
- Reviews
- 33,828
- Age
- 6y ago

Temtop CO2 Monitor Indoor Air Quality Monitor Portable Carbon Dioxide Detector CO2 Temperature Humidity Meter for Home Office School
- Price
- £43.21
- Rating
- 4.4/5
- Reviews
- 766
- Age
- 2y ago
Trending
90-day click momentum
CO2 Monitor Detector focombance 5 in 1 CO2 Detector Alarm Carbon Dioxide Detector Indoor Air Quality Monitor Temperature Humidity SensMonitor LCD Display Home Office Gym Car Multi
- Price
- £15.53
- Rating
- 3.0/5
- Reviews
- 8
- Age
- 2mo ago

FUMIXTEX Carbon Monoxide Detector with LCD Display CO Alarms Replaceable Battery Powered 10 Year Sensor Life Portable CO Detectors for Travel 1 PCS
- Price
- £10.31
- Rating
- 4.6/5
- Reviews
- 55
- Age
- 7mo ago

CO2 Monitor Detector
- Price
- £14.94
- Rating
- 1.0/5
- Reviews
- 1
- Age
- 5mo ago

CO2 Monitor
- Price
- £14.94
- Rating
- 3.5/5
- Reviews
- 2
- Age
- 3mo ago

SONOFF AirGuard CO2 Smart Indoor Air Quality Monitor Matter Compatible 2.4GHz WiFi Carbon Dioxide Detector for CO2/Temp/Humidity Real-Time Display & Alarm for Bedroom Nusery room
- Price
- £36.12
- Rating
- 4.2/5
- Reviews
- 135
- Age
- 8mo ago
Newest
by launch date
CO2 Monitor Detector focombance 5 in 1 CO2 Detector Alarm Carbon Dioxide Detector Indoor Air Quality Monitor Temperature Humidity SensMonitor LCD Display Home Office Gym Car Multi
- Price
- £15.53
- Rating
- 3.0/5
- Reviews
- 8
- Age
- 2mo ago

CO2 Monitor
- Price
- £14.94
- Rating
- 3.5/5
- Reviews
- 2
- Age
- 3mo ago

CO2 Monitor Detector
- Price
- £14.94
- Rating
- 1.0/5
- Reviews
- 1
- Age
- 5mo ago

FUMIXTEX Carbon Monoxide Detector with LCD Display CO Alarms Replaceable Battery Powered 10 Year Sensor Life Portable CO Detectors for Travel 1 PCS
- Price
- £10.31
- Rating
- 4.6/5
- Reviews
- 55
- Age
- 7mo ago

SONOFF AirGuard CO2 Smart Indoor Air Quality Monitor Matter Compatible 2.4GHz WiFi Carbon Dioxide Detector for CO2/Temp/Humidity Real-Time Display & Alarm for Bedroom Nusery room
- Price
- £36.12
- Rating
- 4.2/5
- Reviews
- 135
- Age
- 8mo ago
Competition: brands, sellers & click share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
Brands
15 falling
Sellers
32
Top-5 brand share
66%
Top 20: 100%
Top-5 click share
62%
Top 20: 100%
Open market
26%
- SwitchBot23%
- Fireangel14%
- HISUEKIG12%
- focombance9%
- Kidde8%
- Temtop8%
Co2 Monitor demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 3.1×
Top Co2 Monitor search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- co2 monitor48K/yr
- carbon dioxide detector24K/yr
- carbon dioxide monitor13K/yr
- co2 meter6K/yr
- co2 sensor4K/yr
- co2 detectors3K/yr
- c02 monitor4K/yr
- co2 monitor for home4K/yr
- carbon dioxide2K/yr
What reviews say buyers love and hate about Co2 Monitor
What buyers mention most, as a share of all reviews.
What buyers love
80% of reviews“Very good well made product”
“Good value for money”
“As advertised”
“easy to mount”
“Easy to read”
What buyers complain about
52% of reviews“then constantly said low battery even when the batteries were changed to new ones”
“stopped working after 1.5 years of barely being used”
“Stops working too frequently”
“Neat device, poor documentation with incorrect information”
“The temperature, HCHO, and HVOC readings seem inaccurate and not of any use”
Co2 Monitor return rate & reasons
Why buyers send it back, as a share of all return requests.
0.6%
Return rate
6%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Co2 Monitor questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.








