Is carbon monoxide detector 2 pack profitable to sell on Amazon United Kingdom?

The niche generates £99K/yr across 13 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -71.5%. Flapen's verdict: Skip it (41/100).

How competitive is the carbon monoxide detector 2 pack niche?

8 brands and 24 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in carbon monoxide detector 2 pack?

Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Size-Overall, Functionality-Overall. The return rate is 0.4%.

When does demand for carbon monoxide detector 2 pack peak?

Demand peaks in Jan–Feb–Oct–Nov; the busiest month runs 4.5× the quietest.

What does it cost to enter the carbon monoxide detector 2 pack niche?

Listings span £11.03–£23.22; the average listing price is £16.13 (sweet spot $15–$100). The average incumbent carries 2,371 reviews — the moat a new listing must climb.

carbon monoxide detector 2 pack

Skip it

Soft demand (-71.5% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Conversion

Incredible14.2%

search→purchase rate — share of searches ending in a sale

Avg price

Great£16.13

avg listing price — sweet spot $15–$100

Price range

Good£11.03–£23.22

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay2,371

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad£99K

£99K/yr · 43K searches

Brand share

Bad92%

top-5 brand share — brand-locked demand

Competition

Bad78%

top-5 click share — a locked-up shelf

Growth

Bad-71.5%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, carbon monoxide detector 2 pack is a £99K/yr Amazon United Kingdom market (43K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Jan–Feb–Oct–Nov. Verdict: Skip it — 41/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

carbon monoxide detector 2 pack market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: £97K–£129K; units × avg price
Conversion rate: 14.2%
Avg BSR: #26
Page quality: 0%
Prime: 85%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 33 months
Avg seller age: 180 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

Kidde37%
Fenary22%
Fireangel17%
X-Sense8%
USBNOVEL7%
HOMELYLIFE4%
Open — no brand owns it (2 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -71.5% search growth over the last 90 days.

Peak months: Jan, Feb, Oct, Nov · busiest ÷ quietest = 4.5×

Open Trend

Top carbon monoxide detector 2 pack 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Twin Pack Kidde 5CO Battery Powered Carbon Monoxide Alarm and Detector - 10 Year Sensor Life with AA Batteries

Kidde£20.014.7★2,021 rev

2Pack Carbon Monoxide Detector Carbon Monoxide Alarm Battery Powered With Led Display Screen And 85 Decibel Sound And Light Alarm(Not included AAA Batteries)

Fenary£12.844.3★67 rev

FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home w/Batteries - Travel Portable Carbon Monoxide Detector - CO Detector Monitor w/Test Button - 2-Pack

Fireangel£23.224.7★9,145 rev

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 2-Pack

X-Sense£18.514.7★4,929 rev

Carbon Monoxide Detectors 2 Pack Fenary Carbon Monoxide Alarm Replaceable Battery Operated with LCD Digital Display CO Alarm Detector Monitor with Test Button for Home(Batteries NOT Included)

Fenary£11.414.4★186 rev

Newest

by launch date

Carbon Monoxide Detector 2 Pack Battery Powered CO Alarm with LED Display 85 dB Audible EN50291 Standard Mini Portable Carbon Monoxide Alarm for Home and Car Safety (AAA Battery NOT Included)

HOMELYLIFE£18.2749 rev

4mo ago

2 Pack Carbon Monoxide Detectors - Carbon Monoxide Alarm Battery Powered CO Detectors with Digital Display for Home Easy to Install

Awatin£19.0416 rev

8mo ago

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£11.03610 rev

11mo ago

2Pack Carbon Monoxide Detector Carbon Monoxide Alarm Battery Powered With Led Display Screen And 85 Decibel Sound And Light Alarm(Not included AAA Batteries)

Fenary£12.8467 rev

1y ago

Carbon Monoxide Detector 2 Pack Battery Operated Carbon Monoxide Alarm with LCD Digital Display EN 50291 CO Alarms Monitor for Home Safety (AA Battery NOT Included)

HOMELYLIFE£17.17435 rev

1y ago

What buyers say about carbon monoxide detector 2 pack

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall19%

“The build quality feels solid”

Value For Money18%

“Good Value”

Assembly/Installation11%

“Easy to assemble”

Advertised Vs Actual Product10%

“was as advertised”

Size-Overall5%

“Easy to fit and test”

Ease Of Use5%

“Easy to use”

Compactness4%

“the design is compact”

Battery Life4%

“Was functioning fine with enough battery/recently tested”

Efficiency3%

“Works ok”

Sensor2%

“Compact sensor and working well”

What buyers complain about

Instructions/User Manual/Troubleshooting11%

“AWFUL INSTRUCTIONS AND SERVICE”

Size-Overall10%

“the backplate did not fit the unit”

Functionality-Overall10%

“Don't work”

Quality-Overall8%

“Not great quality control”

Battery Life7%

“batteries died 18 months later”

Durability6%

“then died completely”

Noise Level5%

“Sound level is very loud”

Ease Of Use4%

“Open Impossible”

Value For Money3%

“seems high”

Compactness2%

“Small compact”

Top return reasons

Functionality-Overall21%

Defective Material/Parts14%

Alarm/Timer Accuracy14%

Size-Overall9%

Battery Life6%

Touch/Button Controls3%

Compatibility-Overall3%

Quality-Overall3%

Certifications3%

Instructions/User Manual/Troubleshooting2%

Common questions

Is carbon monoxide detector 2 pack profitable to sell on Amazon United Kingdom?: The niche generates £99K/yr across 13 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -71.5%. Flapen's verdict: Skip it (41/100).
How competitive is the carbon monoxide detector 2 pack niche?: 8 brands and 24 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in carbon monoxide detector 2 pack?: Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Size-Overall, Functionality-Overall. The return rate is 0.4%.
When does demand for carbon monoxide detector 2 pack peak?: Demand peaks in Jan–Feb–Oct–Nov; the busiest month runs 4.5× the quietest.
What does it cost to enter the carbon monoxide detector 2 pack niche?: Listings span £11.03–£23.22; the average listing price is £16.13 (sweet spot $15–$100). The average incumbent carries 2,371 reviews — the moat a new listing must climb.