140mm fan
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Great£18.07avg listing price — sweet spot $15–$100
Price range
Good£4.74–£27.98cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.0%return rate — above 5% kills the launch gate
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Growth
Okay+3.9%90-day search growth — must beat 0% to launch
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Review moat
Okay3,970.62avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad£30K£30K/yr · 57K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, 140mm fan is a £30K/yr Amazon United Kingdom market (57K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 28/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
140mm fan market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- £45K–£54K
- units × avg price
- Conversion rate
- 2.9%
- Avg BSR
- #65
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 69%
- Out of stock
- 0.0%
- Avg brand age
- 43 months
- Avg seller age
- 185 days
Competition & brand share
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.Brands
4 falling
Sellers
38
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
69%
Top 20: 100%
Open market
0%
- Noctua57%
- Corsair28%
- Thermalright8%
- be quiet!7%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +3.9% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 1.9×
Top 140mm fan search terms
- 140mm case fan24K/yr
- 140mm fan13K/yr
- noctua 140mm fan11K/yr
- pc fans 140mm3K/yr
- noctua 140mm3K/yr
- 140mm fans3K/yr
Top 140mm fan 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CORSAIR RS140 140mm PWM Fans Daisy-Chain Connection Low-Noise Magnetic Dome Bearing Dual Pack Black
Corsair£17.874.5★3,786 rev
Noctua NF-P14s redux-1500 PWM High Performance Cooling Fan 4-Pin 1500 RPM (140mm Grey)
Noctua£12.804.7★6,373 rev
Noctua NF-A14x25 G2 PWM Premium-Quality Quiet 140mm PC Fan 4-pin (Brown)
Noctua£27.984.8★485 rev
Noctua NF-A14 iPPC-3000 PWM Heavy Duty Cooling Fan 4-Pin 3000 RPM (140mm Black)
Noctua£23.574.6★3,483 rev
Thermalright TL-C14C-S Case Fan High Performance Cooler Fan with 1500RPM Speed 4-PIN PWM with S-FDB Bearing (140mm ARGB)
Thermalright£4.744.6★21 rev
Newest
by launch dateNoctua NF-A14x25 G2 PWM Premium-Quality Quiet 140mm PC Fan 4-pin (Brown)
Noctua£27.98485 rev
CORSAIR RS140 140mm PWM Fans Daisy-Chain Connection Low-Noise Magnetic Dome Bearing Dual Pack Black
Corsair£17.873,786 rev
CORSAIR RS140 ARGB 140mm PWM Fans Daisy-Chain Connection Low-Noise Magnetic Dome Bearing Dual Pack Black
Corsair£25.113,786 rev
Thermalright TL-C14C-S Case Fan High Performance Cooler Fan with 1500RPM Speed 4-PIN PWM with S-FDB Bearing (140mm ARGB)
Thermalright£4.7421 rev
be quiet! Pure Wings 3 140mm PWM Fan High Top-End Speed Low Minimum RPM Optimized Frame Newly Designed Blades Extraordinary Air Pressure Very Quiet Operation Rifle Bearing
be quiet!£11.28898 rev
Trending
90-day click momentumThermalright TL-C14C-S Case Fan High Performance Cooler Fan with 1500RPM Speed 4-PIN PWM with S-FDB Bearing (140mm ARGB)
Thermalright£4.744.6★
be quiet! Pure Wings 3 140mm PWM Fan High Top-End Speed Low Minimum RPM Optimized Frame Newly Designed Blades Extraordinary Air Pressure Very Quiet Operation Rifle Bearing
be quiet!£11.284.8★
Noctua NF-A12x25 LS-PWM Ultra Quiet Silent Fan 4-Pin (120mm Brown)
Noctua£23.864.8★
CORSAIR RS140 ARGB 140mm PWM Fans Daisy-Chain Connection Low-Noise Magnetic Dome Bearing Dual Pack Black
Corsair£25.114.5★
Noctua NF-P14s redux-1200 PWM Quiet Fan 4-Pin 1200 RPM (140mm Grey)
Noctua£14.534.6★
What buyers say about 140mm fan
What buyers praise and complain about, mined from review topics.What buyers love
“Was £5 so cheap”
“Deserves its reputation”
“Easy to fit”
“that's just my cleaning habits”
“Quiet on min load”
“Impressive cooling really helps move heat out of the case effectively”
“RGB looks nice”
“Airflow is good”
What buyers complain about
“But boy it is NOISY”
“I'm not hitting thermal limits any more”
“Installation was very fiddly in my aged Corsair case”
Top return reasons
Common questions
- Is 140mm fan profitable to sell on Amazon United Kingdom?
- The niche generates £30K/yr across 13 tracked products. 90-day search growth is +3.9%. Flapen's verdict: Skip it (28/100).
- How competitive is the 140mm fan niche?
- 4 brands and 38 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in 140mm fan?
- Top complaints mined from reviews: Noise Level, Heating, Assembly/Installation. The return rate is 3.0%.
- When does demand for 140mm fan peak?
- Demand peaks in Oct–Nov; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 140mm fan niche?
- Listings span £4.74–£27.98; the average listing price is £18.07 (sweet spot $15–$100). The average incumbent carries 3,971 reviews — the moat a new listing must climb.