Skip to content

Co2 Monitor

Co2 Monitor shows low returns (0.6%), but soft demand (-31.3% this quarter) keeps it on the watch list.

Flapen Score

50
Worth a look
Market size 22Growth 9Conversion 47Competition 38Returns 97Price range 83Avg price 91Brand share 65Review moat 36Quality gap 86
This niche Category average

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

Units sold / yr8K
Search volume / yr-31.3%107K
Conversion rate3.7%
Avg price£21.55

Who owns the niche?

The top 5 brands hold 66% of demand, so 34% of the market is open.

34%

open market share

Brands · sellers15 · 32
Top-5 product click share62%
Open market34%
Avg brand age29 months

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

Sponsored placement100%
New entrants (1y)8· 2 succeeded
Avg rating4.1★
Avg reviews2,944

Top Co2 Monitor products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.

£0£9K£17K£26K£35K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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.

Volume107KCVR3.7%Products19Brands15Top 5 Brands66%OOS Rate12.4%Rating4.1★Reviews2,944Avg BSR#15
5K3KSpike '24Black Friday '24Prime Day '25Spike '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

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
Quality-Overall18%

Very good well made product

Value For Money18%

Good value for money

Advertised Vs Actual Product10%

As advertised

Assembly/Installation9%

easy to mount

Ease Of Use7%

Easy to read

What buyers complain about

52% of reviews
Battery Life11%

then constantly said low battery even when the batteries were changed to new ones

Durability8%

stopped working after 1.5 years of barely being used

Functionality-Overall8%

Stops working too frequently

Instructions/User Manual/Troubleshooting4%

Neat device, poor documentation with incorrect information

Measurement/Reading Accuracy4%

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.

1Functionality-Overall
24%
2Defective Material/Parts
15%
3Alarm/Timer Accuracy
11%
4Battery Life
6%
5Size-Overall
5%

Common Co2 Monitor questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Co2 Monitor 50/100 on Amazon United Kingdom — Worth a look. The niche generates £86K/yr across 19 tracked products. 2 of 8 products launched in the last 360 days are still selling. Search demand moved -31.3% over the last 90 days.
Search demand for Co2 Monitor on Amazon United Kingdom peaks in Oct–Nov–Dec, where the busiest month runs 3.1× the quietest.