Is 8 inch carbon filter profitable to sell on Amazon United States?

The niche generates $24K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -20.5%. Flapen's verdict: Skip it (21/100).

How competitive is the 8 inch carbon filter niche?

5 brands and 9 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in 8 inch carbon filter?

Top complaints mined from reviews: Filtration, Durability, Value For Money. The return rate is 3.8%.

When does demand for 8 inch carbon filter peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the 8 inch carbon filter niche?

Listings span $26.50–$294.42; the average listing price is $138.47 (sweet spot $15–$100). The average incumbent carries 3,560 reviews — the moat a new listing must climb.

8 inch carbon filter

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Avg price

Good$138.47

avg listing price — sweet spot $15–$100

Returns

Okay3.8%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,560

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$26.50–$294.42

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

Conversion

Bad2.0%

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

Growth

Bad-20.5%

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

Competition

Bad82%

top-5 click share — a locked-up shelf

Market size

Bad$24K

$24K/yr · 9K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, 8 inch carbon filter is a $24K/yr Amazon United States market (9K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 21/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

8 inch carbon filter market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $35K–$69K; units × avg price
Conversion rate: 2.0%
Avg BSR: #111
Page quality: 0%
Prime: 100%
Sponsored: 90%
Out of stock: 9.5%
Avg brand age: 65 months
Avg seller age: 217 days

Competition & brand share

The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

82%

Top 20: 100%

Open market

AC Infinity52%
VIVOSUN35%
Atomic Innovations5%
Hon&Guan4%
VEVOR4%

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — -20.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top 8 inch carbon filter 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 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

AC Infinity Air Carbon Filter 8 with Premium Australian Virgin Charcoal for Inline Duct Fan Odor Control Hydroponics Grow Rooms

AC Infinity$117.564.8★10,224 rev

VIVOSUN 8 Inch Air Carbon Filter Smelliness Control with Australia Virgin Charcoal for Inline Fan Grow Tent Smelliness Scrubber Pre-Filter Included Reversible Flange 8 x 20 Black

VIVOSUN$97.804.6★1,643 rev

VIVOSUN 8 Inch Air Carbon Filter Smelliness Control with Australia Virgin Charcoal for Inline Duct Fan Grow Tent Pre-Filter Included Reversible Flange 8x 20

VIVOSUN$97.264.6★10,044 rev

AC Infinity Air Carbon Filter XL 8 with Premium Australian Virgin Charcoal Pre-Filter and Rope Hangers Odor Scrubber fit for Inline Duct Fan Odor Control Hydroponics

AC Infinity$127.374.3★310 rev

AC Infinity Refillable Carbon Filter Kit 8 with Additional Refill Odor Removal Air Scrubber For 8 Inline Fan and Ducting Reusable Charcoal Filter for Grow Tent Grow Room Hydroponics

AC Infinity$228.314.7★495 rev

Newest

by launch date

VEVOR 8 Air Filtration Kit 180 CFM Inline Duct Fan with Speed Controller Carbon Filter & Ducting Ventilation System for Heating Cooling Booster Grow Tents Hydroponics

VEVOR$121.792 rev

7mo ago

Hon&Guan 8 Air Filtration Kit: 8 Inch Inline Duct Fan with Speed Controller 16 High Carbon Filter 16 Ft Ducting & Rubber Coupler Ventilation System for Grow Tents Indoor Gardening Hydroponics

Hon&Guan$132.53260 rev

1y ago

AC Infinity Refillable Carbon Filter Kit 8 with Additional Refill Odor Removal Air Scrubber For 8 Inline Fan and Ducting Reusable Charcoal Filter for Grow Tent Grow Room Hydroponics

AC Infinity$228.31495 rev

2y ago

AC Infinity Air Filtration Kit 8 CLOUDLINE LITE Inline Fan and Carbon Filter Combo Cooling and Ventilation System for Grow Tents Hydroponics Indoor Gardening

AC Infinity$294.421,614 rev

5y ago

VIVOSUN 8 Inch Air Carbon Filter Smelliness Control with Australia Virgin Charcoal for Inline Fan Grow Tent Smelliness Scrubber Pre-Filter Included Reversible Flange 8 x 20 Black

VIVOSUN$97.801,643 rev

5y ago

What buyers say about 8 inch carbon filter

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

What buyers love

Functionality-Overall33%

“Ok. Anything that is automated is great because you dont have to do anything not not 100% efficient sometimes when it should be off it is on and vice versa”

Smell17%

“still keeping odors undetected”

Advertised Vs Actual Product17%

“As advertised”

Quality-Overall11%

“The coupler is quality”

Ease Of Cleaning11%

“Clean”

What buyers complain about

Filtration50%

“This doesnt have the strength to push through the filter with any kind of authority”

Durability10%

“It Didnt last long for me”

Value For Money7%

“I wonder why it's more expensive than their competitor's on Amazon”

Functionality-Overall7%

“Doesn't work”

Spray/Flow7%

“so the air couldn't flow”

Advertised Vs Actual Product7%

“The CFM rating on this 8in unit is not as advertised”

Top return reasons

Size-Overall58%

Filtration11%

Advertised Vs Actual Product8%

Defective Material/Parts6%

Smell5%

Carbon Footprint2%

Functionality-Overall2%

Product Condition2%

Spray/Flow1%

Compatibility-Overall1%

Common questions

Is 8 inch carbon filter profitable to sell on Amazon United States?: The niche generates $24K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -20.5%. Flapen's verdict: Skip it (21/100).
How competitive is the 8 inch carbon filter niche?: 5 brands and 9 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in 8 inch carbon filter?: Top complaints mined from reviews: Filtration, Durability, Value For Money. The return rate is 3.8%.
When does demand for 8 inch carbon filter peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the 8 inch carbon filter niche?: Listings span $26.50–$294.42; the average listing price is $138.47 (sweet spot $15–$100). The average incumbent carries 3,560 reviews — the moat a new listing must climb.