Is radon detector profitable to sell on Amazon United Kingdom?

The niche generates £15K/yr across 18 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -32.6%. Flapen's verdict: Skip it (35/100).

How competitive is the radon detector niche?

9 brands and 44 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in radon detector?

Top complaints mined from reviews: Measurement/Reading Accuracy, Functionality-Overall, Ethical Trade/Fair Trade. The return rate is 3.8%.

When does demand for radon detector peak?

Demand peaks in Oct–Nov; the busiest month runs 1.9× the quietest.

What does it cost to enter the radon detector niche?

Listings span £14.86–£157.13; the average listing price is £79.60 (sweet spot $15–$100). The average incumbent carries 912 reviews — the moat a new listing must climb.

radon detector

Skip it

A small market ($15K/yr) — this niche doesn't clear our bar today.

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Avg price

Great£79.60

avg listing price — sweet spot $15–$100

Review moat

Good912.33

avg incumbent reviews — the moat a new listing must climb

Price range

Good£14.86–£157.13

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

Competition

Good55%

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

Returns

Okay3.8%

return rate — above 5% kills the launch gate

Brand share

Bad93%

top-5 brand share — brand-locked demand

Growth

Bad-32.6%

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

Conversion

Bad0.7%

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

Market size

Bad£15K

£15K/yr · 27K searches

Signals High Price

According to Flapen's Amazon United Kingdom niche tracking, radon detector is a £15K/yr Amazon United Kingdom market (27K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 35/100.

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

radon detector market data

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: £40K–£60K; units × avg price
Conversion rate: 0.7%
Avg BSR: #77
Page quality: 0%
Prime: 78%
Sponsored: 72%
Out of stock: 18.9%
Avg brand age: 36 months
Avg seller age: 187 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

55%

Top 20: 100%

Open market

Airthings42%
AEGTEST24%
FORENSICS DETECTORS FD12%
TARSHYRY8%
Leaping Lynx8%
Saluaqui2%
Open — no brand owns it (3 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 85 weeks — -32.6% search growth over the last 90 days.

Peak months: Oct, Nov · busiest ÷ quietest = 1.9×

Open Trend

Top radon detector search terms

radon detector15K/yr -42.2%1.4% conv.
airthings6K/yr -5.9%1.1% conv.
radon test kit6K/yr -29.8%2.0% conv.

All search terms

Top radon 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.

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

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Radon Detector by Forensics | Tenants and Homeowners | 20-Year Sensor Life |

FORENSICS DETECTORS FD£66.444.4★143 rev

Airthings 2960 View Plus - Radon and Air Quality Monitor with PM 2.5 CO2 VOC Humidity and Temperature Detector Mobile APP Wi-Fi Notifications

Airthings£157.134.1★1,855 rev

Air Quality Monitor Radon Detector LCD Large Screen with Intuitive Color-coded System Air Quality Monitor Indoor for Greenhouses Agricultural Production Warehouses (White)

TARSHYRY£16.232.5★2 rev

Airthings Wave Radon - Smart Radon Detector with Humidity and Temperature Monitor Accurate and Easy to Use Cable-Free - 2950

Airthings£88.224.4★2,500 rev

EPA-Approved Radon Test Kit for Home Lab Fee Included - 48-Hour Short Term Radon Detector with Pro Lab Report in 3-5 Days - Just Expose Radon Tester Apply Postage + Mail & Get Radon Testing Results

Leaping Lynx£26.094.3★107 rev

Newest

by launch date

AEGTEST HOUND-1011S Portable Radon Detector High-Accuracy Sensor for Home Lightweight Audible & Visual Alarms Long-Term Monitoring Easy-to-Use Radon Tester in pCi/L or Bq/m for Basement

AEGTEST£66.71472 rev

8mo ago

AEGTEST HOUND-1011S Portable Radon Detector High-Accuracy Sensor for Home Lightweight Audible & Visual Alarms Long-Term Monitoring Easy-to-Use Radon Tester in pCi/L or Bq/m for Basement

AEGTEST£65.58472 rev

8mo ago

Digital Radon Detector LCD Display Dual USB Battery Power Options 3 Year Battery Life 10 Year Sensor Lifespan Accurate pCiL Concentration Detection for Home and Office Use

AOTIQUAL£35.9688 rev

9mo ago

EPA-Approved Radon Test Kit for Home Lab Fee Included - 48-Hour Short Term Radon Detector with Pro Lab Report in 3-5 Days - Just Expose Radon Tester Apply Postage + Mail & Get Radon Testing Results

Leaping Lynx£26.09107 rev

11mo ago

AEGTEST HOUND-1011 Portable Radon Detector for Home Lightweight High-Accuracy Sensor 45-Day Monitoring Easy-to-Use Radon Tester for Short- & Long-Term in pCi/L or Bq/m for Basement Gray

AEGTEST£79.94476 rev

11mo ago

What buyers say about radon detector

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

What buyers love

Ease Of Use27%

“easy to use”

Battery Life13%

“Battery seems to last for ever”

Advertised Vs Actual Product13%

“Does the job”

Measurement/Reading Accuracy6%

“showing measurements without needing to dig through menus”

Weight Light5%

“Lightweight”

Quality-Overall5%

“Superb”

Design-Overall4%

“Ergonomic physical design”

Compactness3%

“Its compact and lightweight, so it doesnt feel intrusive sitting in a room or basement”

Connectivity-Overall3%

“Clear display and easily coupled to WiFi and App”

Strength3%

“Really effective”

What buyers complain about

Measurement/Reading Accuracy27%

“Hence these detectors are not accurate as it underestimates the radon by half or less”

Functionality-Overall14%

“It didn't work”

Ethical Trade/Fair Trade11%

“im annoyed that I have essentially been scammed”

Flammable11%

“This is a very sensitive device when to detection of flammable propellants”

Quality-Overall4%

“Overall, though not cheap this device, if you believe radon gas levels could be high in your property, will save money v getting professional help”

Value For Money4%

“Overall, though not cheap this device, if you believe radon gas levels could be high in your property, will save money v getting professional help”

Battery Life2%

“- Limited information on battery life or power source”

Top return reasons

Functionality-Overall30%

Connectivity-Overall17%

Compatibility-Overall9%

Product Condition6%

Quality-Overall6%

Defective Material/Parts6%

Advertised Vs Actual Product6%

Value For Money6%

Heating3%

Unsustainable Design3%

Common questions

Is radon detector profitable to sell on Amazon United Kingdom?: The niche generates £15K/yr across 18 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -32.6%. Flapen's verdict: Skip it (35/100).
How competitive is the radon detector niche?: 9 brands and 44 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in radon detector?: Top complaints mined from reviews: Measurement/Reading Accuracy, Functionality-Overall, Ethical Trade/Fair Trade. The return rate is 3.8%.
When does demand for radon detector peak?: Demand peaks in Oct–Nov; the busiest month runs 1.9× the quietest.
What does it cost to enter the radon detector niche?: Listings span £14.86–£157.13; the average listing price is £79.60 (sweet spot $15–$100). The average incumbent carries 912 reviews — the moat a new listing must climb.