heat detector
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Avg price
Great$47.09avg listing price — sweet spot $15–$100
Returns
Great1.4%return rate — above 5% kills the launch gate
Review moat
Good788.7avg incumbent reviews — the moat a new listing must climb
Price range
Good$16.54–$157.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Market size
Okay$134K$134K/yr · 97K searches
Growth
Bad-1.5%90-day search growth — must beat 0% to launch
Competition
Bad89%top-5 click share — a locked-up shelf
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, heat detector is a $134K/yr Amazon United States market (97K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Jan–Feb–Mar–Apr. Verdict: Skip it — 38/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
heat detector market data
- Units sold / yr
- 5K–6K
- avg 750–1,000/product
- Revenue / yr
- $235K–$283K
- units × avg price
- Conversion rate
- 2.9%
- Avg BSR
- #128
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 50%
- Out of stock
- 0.0%
- Avg brand age
- 63 months
- Avg seller age
- 149 days
Competition & brand share
The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 falling
Sellers
91
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
89%
Top 20: 100%
Open market
0%
- First Alert37%
- Kidde32%
- System Sensor25%
- TOPDON2%
- Notifier2%
- OELFFOW2%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.5% search growth over the last 90 days.Peak months: Jan, Feb, Mar, Apr · busiest ÷ quietest = 4.4×
Top heat detector search terms
- heat detector28K/yr
- heat detector for garage24K/yr
- heat sensor13K/yr
- garage heat detector7K/yr
- heat alarm9K/yr
- heat detector battery operated5K/yr
- heat alarm detector3K/yr
- heat alarm garage5K/yr
- heat sensor alarm3K/yr
Top heat 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
First Alert Hardwired Heat Alarm with Battery Backup BRK Brands HD6135FB
First Alert$29.604.5★780 rev
Kidde Heat Detector Hardwired with Battery Backup & 2 LEDs Interconnect Capability Ideal for Garages
Kidde$39.504.6★1,082 rev
System Sensor 5600 135 Degree Fixed Temperature Rate-of-Rise Single-Circuit Mechanical Heat Detector with Plain Housing
System Sensor$25.214.4★64 rev
System Sensor 5604 194F Fixed Temp Single Circuit Heat Sensor
System Sensor$28.524.4★55 rev
Kidde Hardwire Interconnectable 135-Degree Heat Alarm HD135F
Kidde$43.654.5★38 rev
Newest
by launch date
120V Temperature Alarm Controller with 105dB Sound and Light Alert
OELFFOW$59.1110 rev
TOPDON TC004 Mini Thermal Imaging Camera 240 x 240 TISR Resolution
TOPDON$157.53934 rev
First Alert Battery Smoke Alarm
First Alert$16.544,896 rev
Kidde Hardwire Interconnectable 135-Degree Heat Alarm HD135F
Kidde$43.6538 rev
Notifier FST-951 - Fixed Temperature Thermal Sensor - White
Notifier$43.954 rev
Trending
90-day click momentum120V Temperature Alarm Controller with 105dB Sound and Light Alert
OELFFOW$59.114.1★
Notifier FST-951 - Fixed Temperature Thermal Sensor - White
Notifier$43.955.0★
System Sensor 5600 135 Degree Fixed Temperature Rate-of-Rise Single-Circuit Mechanical Heat Detector with Plain Housing
System Sensor$25.214.4★
First Alert Battery Smoke Alarm
First Alert$16.544.6★
System Sensor 5603 135F Fixed Temp Single-Circuit Mechanical Heat Detector
System Sensor$27.314.3★
What buyers say about heat detector
What buyers praise and complain about, mined from review topics.What buyers love
“Good price”
“Awesome tool”
“Easy Installation”
“Easy to use”
“Does the job”
“is working as promised”
“No more false alarms”
“Works reliably, is a powerhouse in a small size”
“Battery life is great”
“Seems durable”
What buyers complain about
“Hard to get battery in”
“Doesnt work properly”
“weak instructions”
“Poor Quality / Freezing”
“It's not what it says it is”
“In total a dozen of these units failed in only a few months”
“showing heat getting out that should not get out”
“I found the air leaks and then some”
“Too small overpriced for what it is”
“within a few months first the false alarms started”
Top return reasons
Common questions
- Is heat detector profitable to sell on Amazon United States?
- The niche generates $134K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.5%. Flapen's verdict: Skip it (38/100).
- How competitive is the heat detector niche?
- 6 brands and 91 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in heat detector?
- Top complaints mined from reviews: Battery Life, Functionality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 1.4%.
- When does demand for heat detector peak?
- Demand peaks in Jan–Feb–Mar–Apr; the busiest month runs 4.4× the quietest.
- What does it cost to enter the heat detector niche?
- Listings span $16.54–$157.53; the average listing price is $47.09 (sweet spot $15–$100). The average incumbent carries 789 reviews — the moat a new listing must climb.