---
title: "Hardwired Smoke and Carbon Monoxide Detector — $14.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/hardwired-smoke-and-carbon-monoxide-detector"
last_updated: "2026-08-09T12:14:12.772Z"
locale: en
meta:
description: "Niche score 56/100 · $14.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $14.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Hardwired Smoke and Carbon Monoxide Detector — $14.1M/yr Amazon US Niche (2026) - Flapen"
---
# **hardwired smoke and carbon monoxide detector**
**Worth a look**
Shows a $14.1M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 100Growth 19Conversion 74Competition 78Returns 48Price range 33Avg price 81Brand share 4Review moat 45Quality gap 60
**Market size**
**Incredible****$14.1M**
$14.1M/yr · 2.5M searches
**Avg price**
**Great****$83.56**
avg listing price — sweet spot $15–$100
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Conversion**
**Good****6.9%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Okay****3.2%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****2,043.19**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****$28.88–$245.32**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-11.9%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, hardwired smoke and carbon monoxide detector is a $14.1M/yr Amazon United States market (2.5M searches/yr). The top 5 brands hold 98% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **hardwired smoke and carbon monoxide detector market data**
- **Units sold / yr**
- **200K–250K**
- avg 5,000–6,000/product
- **Revenue / yr**
- **$16.7M–$20.9M**
- units × avg price
- **Conversion rate**
- **6.9%**
- **Avg BSR**
- **#165**
- **Page quality**
- **0%**
- **Prime**
- **95%**
- **Sponsored**
- **86%**
- **Out of stock**
- **1.9%**
- **Avg brand age**
- **57 months**
- **Avg seller age**
- **136 days**
## **Competition & brand share**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**4 **▼falling
**Sellers**
**175**
**Top-5 brand share**
**98%**
Top 20: 98%
**Top-5 click share**
**37%**
Top 20: 78%
**Open market**
**0%**
- Kidde61% - First Alert36% - --2% - Hunter1% - Wigwam1%
## **Demand & seasonality**
Weekly Amazon search volume, last 81 weeks — -11.9% search growth over the last 90 days.
70K50KSpike '25Holiday '25Spike '26 seasonFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/hardwired-smoke-and-carbon-monoxide-detector/trend)
## **Top hardwired smoke and carbon monoxide detector search terms**
- **kidde smoke and carbon monoxide alarm**860K/yr-11.2%6.3% conv. - **first alert smoke and carbon monoxide detector combination alarms**606K/yr-6.1%7.8% conv. - **kiddie smoke and carbon monoxide alarm hardwired model kn-cosm-1b**201K/yr-21.1%5.2% conv. - **hardwired smoke and carbon monoxide detector**119K/yr-28.0%3.5% conv. - **first alert**88K/yr-0.5%1.5% conv. - **kidde**74K/yr-5.7%1.4% conv. - **wired smoke and carbon monoxide detector**76K/yr-21.2%3.5% conv. - **kidde kn-cosm-iba**67K/yr-14.3%4.1% conv. - **kidde smoke and carbon monoxide alarm hardwired**50K/yr+1.9%4.9% conv. - **kidde i12010sco**37K/yr-20.0%1.8% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/hardwired-smoke-and-carbon-monoxide-detector/search-terms)
## **Top hardwired smoke and 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%3%$424K6%$847K9%$1.3M12%$1.7M1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm**First Alert**$50.54**4.5★1,569 rev](https://www.amazon.com/dp/B0CLVRSC1Q) [2**Kidde Smoke & Carbon Monoxide Detector 10-Year Battery 30CUD10 1 Pack**Kidde**$49.20**4.0★1,136 rev](https://www.amazon.com/dp/B0CX6BWRMM) [3**Kidde Hardwired Smoke & Carbon Monoxide Detector Battery Backup Interconnectable LED Warning Light Indicators**Kidde**$114.42**4.6★11,510 rev](https://www.amazon.com/dp/B086S4Y9H5) [4**Kidde Smoke & CO Detector Hardwired & 10-Year Battery 30CUA10 1 Pack**Kidde**$63.29**4.2★1,237 rev](https://www.amazon.com/dp/B0CX6FVG83) [5**FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement**First Alert**$71.61**4.6★2,333 rev](https://www.amazon.com/dp/B07G95Z38H)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Kidde Smart Smoke and Carbon Monoxide Detector Ring App Enabled for Real-Time Notifications Hardwired Alarm AA Backup Battery**Kidde**$69.39**330 rev9mo ago](https://www.amazon.com/dp/B0F7N7WGWY) [**Kidde Smoke & CO Detector Hardwired & AA Battery Backup 30CUAR 3 Pack**Kidde**$171.49**640 rev10mo ago](https://www.amazon.com/dp/B0FFVDXMN6) [**Kidde Hardwired Smoke & Carbon Monoxide Detector 10-Year Battery Backup Voice Alerts Interconnectable LED Warning Light Indicators 4 Pack**Kidde**$218.37**365 rev1y ago](https://www.amazon.com/dp/B0DDWD2PZ3) [**Kidde Smoke & Carbon Monoxide Detector 10-Year Battery 30CUD10 1 Pack**Kidde**$49.20**1,136 rev2y ago](https://www.amazon.com/dp/B0CX6BWRMM) [**Kidde Smoke & CO Detector Hardwired & 10-Year Battery 30CUA10 1 Pack**Kidde**$63.29**1,237 rev2y ago](https://www.amazon.com/dp/B0CX6FVG83)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Kidde Smoke & Carbon Monoxide Detector AA Battery Powered not wired Voice Alerts LED Warning Light Indicators**Kidde**$53.55**4.5★**▲ 241%**](https://www.amazon.com/dp/B0C8LYNJCY) [**FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement**First Alert**$71.61**4.6★**▲ 130%**](https://www.amazon.com/dp/B07G95Z38H) [**First Alert Battery Combination Smoke & Carbon Monoxide Alarm**First Alert**$109.68**4.5★**▲ 107%**](https://www.amazon.com/dp/B0CLVRPNZX) [**First Alert Hardwire Combination Smoke & Carbon Monoxide Alarm**First Alert**$245.32**4.5★**▲ 81%**](https://www.amazon.com/dp/B0CLVS37Z9) [**Kidde Smoke & Carbon Monoxide Detector 10-Year Battery Voice Alerts 1 Count ( Pack of 1)**Kidde**$53.65**4.3★**▲ 69%**](https://www.amazon.com/dp/B086S4XM3W)
**~~View all trending →~~**
## **What buyers say about hardwired smoke and carbon monoxide detector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**26%
*“Easy Set-Up”*
**Quality-Overall**11%
*“Great quality detectors”*
**Advertised Vs Actual Product**10%
*“Better than I expected”*
**Value For Money**6%
*“Great deal”*
**Battery Life**4%
*“Well Made and has long lasting battery”*
**Ease Of Use**4%
*“Easy to replace”*
**Efficiency**4%
*“It does its job”*
**Sensor**4%
*“CO detector is a definite plus”*
**Alarm/Timer Accuracy**4%
*“No false alarms so far”*
**Size-Overall**3%
*“Everything fit exactly as needed”*
### **What buyers complain about **
**Durability**21%
*“Broke”*
**Quality-Overall**11%
*“Poor quality control”*
**Battery Life**9%
*“Battery was dead when received”*
**Value For Money**9%
*“Little expensive”*
**Functionality-Overall**7%
*“Didn't work”*
**Noise Level**6%
*“began incredibly irritating beeping”*
**Alarm/Timer Accuracy**6%
*“Alarms were defective”*
**Connectivity-Overall**4%
*“will not connect”*
**Assembly/Installation**2%
*“Unfortunately after trying to install”*
**Compatibility-Overall**2%
*“Not compatible as claimed”*
### **Top return reasons **
**Alarm/Timer Accuracy**24%
**Compatibility-Overall**14%
**Connectivity-Overall**13%
**Advertised Vs Actual Product**9%
**Value For Money**8%
**Functionality-Overall**7%
**Size-Overall**7%
**Defective Material/Parts**4%
**Product Condition**2%
**Assembly/Installation**2%
## **Common questions**
- **Is hardwired smoke and carbon monoxide detector profitable to sell on Amazon United States?**
- The niche generates $14.1M/yr across 43 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is -11.9%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the hardwired smoke and carbon monoxide detector niche?**
- 4 brands and 175 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in hardwired smoke and carbon monoxide detector?**
- Top complaints mined from reviews: Durability, Quality-Overall, Battery Life. The return rate is 3.2%.
- **When does demand for hardwired smoke and carbon monoxide detector peak?**
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- **What does it cost to enter the hardwired smoke and carbon monoxide detector niche?**
- Listings span $28.88–$245.32; the average listing price is $83.56 (sweet spot $15–$100). The average incumbent carries 2,043 reviews — the moat a new listing must climb.
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