crawl space fan
Skip itWeak search conversion (1.8%) — this niche doesn't clear our bar today.
Review moat
Great245avg incumbent reviews — the moat a new listing must climb
Avg price
Great$88.59avg listing price — sweet spot $15–$100
Growth
Great+67.1%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Okay$59.69–$148.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Market size
Okay$194K$194K/yr · 118K searches
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Conversion
Bad1.8%search→purchase rate — share of searches ending in a sale
Returns
Bad5.5%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, crawl space fan is a $194K/yr Amazon United States market (118K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Skip it — 48/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
crawl space fan market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- $221K–$266K
- units × avg price
- Conversion rate
- 1.8%
- Avg BSR
- #557
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 95%
- Out of stock
- 3.1%
- Avg brand age
- 45 months
- Avg seller age
- 187 days
Competition & brand share
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
9 flat
Sellers
23
Top-5 brand share
85%
Top 20: 100%
Top-5 click share
61%
Top 20: 100%
Open market
9%
- CADPXS32%
- ALORAIR25%
- Abestorm13%
- AC Infinity8%
- Pewoaoa8%
- Tjernlund6%
- Open — no brand owns it (3 brands, 9%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +67.1% search growth over the last 90 days.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 3.2×
Top crawl space fan search terms
- crawl space fan30K/yr
- crawlspace fan14K/yr
- crawl space vent fan19K/yr
- crawlspace ventilation fan15K/yr
- basement ventilation fan9K/yr
- crawlspace vent fan5K/yr
- basement exhaust fan8K/yr
- crawlspace fan with humidistat4K/yr
- foundation vent fan4K/yr
- crawl space exhaust fan4K/yr
Top crawl space 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CADPXS Crawlspace Ventilation Fan Crawlspace Fan Vent with Humidistat Dehumidistat & Freeze Protection Thermostat for Crawl Spaces/Basement/Garage/Attic/Hydroponics Grow Tents (220 CFM Air Out)
CADPXS$107.334.5★412 rev
ALORAIR 540 CFM IP-55 Grade Crawlspace Ventilation Fans with Humidistat & Thermostat 8.7 inches Basement Vent Fans with Isolation Mesh Ventilator Fan for Crawl Space Basement Attic Garage Exhaust
ALORAIR$77.114.4★152 rev
Pewoaoa 240 CFM Crawlspace Vent Fan With Thermostat Humidistat For Moisture Reduction Radon Mitigation Freeze Protection Ideal for Basement Attic Crawl Space Fan Vent(Air Out) 3-year warranty
Pewoaoa$89.184.5★31 rev
Tjernlund V2D Underaire Crawlspace Ventilator Fan Moisture Reducing 220 CFM
Tjernlund$115.984.5★838 rev
Abestorm 260CFM Crawlspace Ventilation Fans IP-55 Rated Exhaust Fan with Humidistat Thermostat 6.7 Inch Basement Vent Fan with Isolation Mesh for Crawl Space Garage Attic Exhaust Commercial
Abestorm$59.694.3★262 rev
Newest
by launch date
WARMOASIS 220 CFM Crawl Space Vent Fan with Dehumidistat & Thermostat Dual Knobs for Speed & Humidity Control 3000 RPM Reduces Indoor Radon Humidity & Odors High-Efficiency Ventilation
WARMOASIS$70.2121 rev
SUNSHORE Crawlspace Fan 220 CFM Basement Ventilation Fan with Humidistat Dehumidistat & Freeze Protection Thermostat for Crawl Spaces Basement Garage Attic Hydroponics
SUNSHORE$63.403 rev
Pewoaoa 240 CFM Crawlspace Vent Fan With Thermostat Humidistat For Moisture Reduction Radon Mitigation Freeze Protection Ideal for Basement Attic Crawl Space Fan Vent(Air Out) 3-year warranty
Pewoaoa$89.1831 rev
ALORAIR 260 CFM Stainless Steel Crawl Space Ventilation Fan with Humidistat Dehumidistat IP55 Rated Crawlspace Vent Fan for Foundation Basements Garage Attic
ALORAIR$69.13142 rev
Abestorm 260CFM Crawlspace Ventilation Fans IP-55 Rated Exhaust Fan with Humidistat Thermostat 6.7 Inch Basement Vent Fan with Isolation Mesh for Crawl Space Garage Attic Exhaust Commercial
Abestorm$59.69262 rev
Trending
90-day click momentumSUNSHORE Crawlspace Fan 220 CFM Basement Ventilation Fan with Humidistat Dehumidistat & Freeze Protection Thermostat for Crawl Spaces Basement Garage Attic Hydroponics
SUNSHORE$63.405.0★
Abestorm 260CFM Crawlspace Ventilation Fans IP-55 Rated Exhaust Fan with Humidistat Thermostat 6.7 Inch Basement Vent Fan with Isolation Mesh for Crawl Space Garage Attic Exhaust Commercial
Abestorm$59.694.3★
Durablow 220 CFM Air-Out Stainless Steel Crawl Space Vent Fan Dual Fans Foundation Vent Radon Mitigation for Crawl Space Basement with Freeze Protection Thermostat (Stainless steel M2)
Durablow$78.584.6★
Abestorm 540CFM Crawlspace Ventilation Fans IP-55 Grade Basements Vent Fan 8.7 inches Ventilator Fan with Freeze Protection Thermostat Dehumidistat for Crawl Space Basement Attic Garage Exhaust
Abestorm$81.504.2★
ALORAIR 570 CFM Crawlspace Ventilator Fan with Humidistat Stainless Steel Exhaust Vent Fans with Digital Display Timing Cycle Freeze Protection Thermostat for Basement Garage Attic Grow Tent
ALORAIR$89.364.4★
What buyers say about crawl space fan
What buyers praise and complain about, mined from review topics.What buyers love
“It is quiet and nice,”
“easy to install”
“Great value for the money”
“Great quality and easy installation”
“The fan operates as stated”
“Moisture removal fan”
“Our crawl space is drier, cleaner and the dank odor is gone”
“Great item works good”
“feels really solidly made”
“Helps to keep the garage temperature down”
What buyers complain about
“Stopped working”
“the fan is loud”
“Junk”
“the dimensions just didn't work for my project”
“Not strong enough”
“will not last”
“Was not adequate for my 450 sq ft she shed crawl space”
“Installed and maintained professionally yet still failed”
“Looks waterlogged as the screen Has water dropplets in it”
“It is a to complex control panel and/or not good enough instructions”
Top return reasons
Common questions
- Is crawl space fan profitable to sell on Amazon United States?
- The niche generates $194K/yr across 19 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +67.1%. Flapen's verdict: Skip it (48/100).
- How competitive is the crawl space fan niche?
- 9 brands and 23 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 85% of demand.
- What do buyers complain about in crawl space fan?
- Top complaints mined from reviews: Functionality-Overall, Noise Level, Quality-Overall. The return rate is 5.5% — above our launch gate.
- When does demand for crawl space fan peak?
- Demand peaks in Jun–Jul–Aug; the busiest month runs 3.2× the quietest.
- What does it cost to enter the crawl space fan niche?
- Listings span $59.69–$148.84; the average listing price is $88.59 (sweet spot $15–$100). The average incumbent carries 245 reviews — the moat a new listing must climb.