Is smoke detector carbon monoxide detector combo profitable to sell on Amazon United States?

The niche generates $18.7M/yr across 39 tracked products. 6 of 6 products launched in the last 360 days are still selling. 90-day search growth is -20.3%. Flapen's verdict: Worth a look (55/100).

How competitive is the smoke detector carbon monoxide detector combo niche?

4 brands and 79 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in smoke detector carbon monoxide detector combo?

Top complaints mined from reviews: Durability, Battery Life, Quality-Overall. The return rate is 2.7%.

When does demand for smoke detector carbon monoxide detector combo peak?

Demand peaks in Jan; the busiest month runs 1.9× the quietest.

What does it cost to enter the smoke detector carbon monoxide detector combo niche?

Listings span $16.54–$245.32; the average listing price is $74.66 (sweet spot $15–$100). The average incumbent carries 1,411 reviews — the moat a new listing must climb.

smoke detector carbon monoxide detector combo

Worth a look

Shows a $18.7M/yr market, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size

Incredible$18.7M

$18.7M/yr · 4.0M searches

Avg price

Great$74.66

avg listing price — sweet spot $15–$100

Competition

Good43%

top-5 click share — leaders hold, buyers still browse

Conversion

Good6.2%

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

Returns

Good2.7%

return rate — above 5% kills the launch gate

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Good1,411.38

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$16.54–$245.32

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

Growth

Bad-20.3%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, smoke detector carbon monoxide detector combo is a $18.7M/yr Amazon United States market (4.0M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Worth a look — 55/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

smoke detector carbon monoxide detector combo market data

Units sold / yr: 250K–300K; avg 8,000–10,000/product
Revenue / yr: $18.7M–$22.4M; units × avg price
Conversion rate: 6.2%
Avg BSR: #14
Page quality: 0%
Prime: 100%
Sponsored: 90%
Out of stock: 5.1%
Avg brand age: 36 months
Avg seller age: 139 days

Competition & brand share

The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.

Brands

4 rising

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

43%

Top 20: 85%

Open market

First Alert48%
X-Sense29%
Kidde22%
HEIMAN1%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -20.3% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.9×

Open Trend

Top smoke detector carbon monoxide detector combo search terms

smoke detector carbon monoxide detector combo 10 year battery1.9M/yr -17.2%5.2% conv.
smoke and carbon monoxide detector788K/yr -24.4%4.2% conv.
carbon monoxide smoke detector combo207K/yr -15.9%4.9% conv.
fire alarms smoke detectors carbon monoxide145K/yr -9.3%3.7% conv.
smoke & carbon monoxide alarms124K/yr -15.2%3.2% conv.
smoke alarm and carbon monoxide detector137K/yr -32.7%4.7% conv.
fire and carbon monoxide detector98K/yr -22.6%3.8% conv.
smoke and carbon monoxide alarm76K/yr -9.6%3.4% conv.
co2 and smoke detector combo50K/yr -29.0%4.7% conv.
smoke and co2 detector combo77K/yr -14.6%3.7% conv.

All search terms

Top smoke detector carbon monoxide detector combo 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

First Alert Battery Combination Smoke & Carbon Monoxide Alarm

First Alert$40.004.5★969 rev

First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm

First Alert$39.123.8★1,608 rev

X-Sense Smoke Detector Carbon Monoxide Detector Combo SC07 1-Pack

X-Sense$33.564.6★4,104 rev

X-Sense Smoke Detector and Carbon Monoxide Detector SC01 1-Pack

X-Sense$31.964.6★2,271 rev

Kidde Smoke & Carbon Monoxide Detector AA Battery-Powered 30CUDR 1 Pack

Kidde$47.224.4★654 rev

Newest

by launch date

X-Sense Smoke & Carbon Monoxide Alarm SC06 1-Pack

X-Sense$36.31245 rev

4mo ago

Kidde Smoke & Carbon Monoxide Detector AA Battery-Powered 30CUDR 3 Pack

Kidde$133.92654 rev

10mo ago

X-Sense Smoke Detector Carbon Monoxide Alarm Combo XP0H-SN 1-Pack

X-Sense$35.86131 rev

1y ago

Kidde Carbon Monoxide Detector AA Battery Powered Portable for Travel or Home 85 dB Alarm LED Status Indicators 3rd Edition

Kidde$22.911,663 rev

1y ago

Kidde Smoke & Carbon Monoxide Detector AA Battery-Powered 30CUDR 1 Pack

Kidde$47.22654 rev

2y ago

What buyers say about smoke detector carbon monoxide detector combo

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

What buyers love

Assembly/Installation25%

“Ease of installation”

Quality-Overall11%

“The build quality feels solid”

Value For Money9%

“Excellent value”

Advertised Vs Actual Product9%

“Exactly what I wanted”

Efficiency5%

“Unit works fine”

Battery Life5%

“good battery life”

Alarm/Timer Accuracy3%

“so far no false alarms”

Sensor3%

“These combination detectors are really good”

Ease Of Use3%

“Easy peasy”

Security3%

“Keep your family safe”

What buyers complain about

Durability24%

“Failed after about 12 months”

Battery Life12%

“Battery was dead when received”

Quality-Overall9%

“Bad quality”

Functionality-Overall8%

“Did not work”

Noise Level7%

“Loud”

Value For Money5%

“Nearly half price as box store”

Alarm/Timer Accuracy5%

“Defective alarm”

Assembly/Installation2%

“Tricky to install”

Size-Overall2%

“which in turn is slightly smaller”

Advertised Vs Actual Product2%

“Not as described”

Top return reasons

Alarm/Timer Accuracy29%

Compatibility-Overall12%

Connectivity-Overall11%

Functionality-Overall8%

Value For Money8%

Size-Overall8%

Advertised Vs Actual Product7%

Defective Material/Parts3%

Product Condition2%