Is 20x20x5 air filter profitable to sell on Amazon United States?

The niche generates $681K/yr across 16 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +25.5%. Flapen's verdict: Worth a look (58/100).

How competitive is the 20x20x5 air filter niche?

8 brands and 18 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in 20x20x5 air filter?

Top complaints mined from reviews: Size-Overall, Filtration, Value For Money. The return rate is 0.8%.

When does demand for 20x20x5 air filter peak?

Demand peaks in Aug–Sep; the busiest month runs 7.6× the quietest.

What does it cost to enter the 20x20x5 air filter niche?

Listings span $28.83–$88.51; the average listing price is $57.54 (sweet spot $15–$100). The average incumbent carries 2,851 reviews — the moat a new listing must climb.

20x20x5 air filter

Worth a look

Shows low returns (0.8%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Price range

Incredible$28.83–$88.51

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

Conversion

Great10.7%

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

Avg price

Great$57.54

avg listing price — sweet spot $15–$100

Market size

Good$681K

$681K/yr · 110K searches

Growth

Good+25.5%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,850.88

avg incumbent reviews — the moat a new listing must climb

Competition

Okay66%

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

Brand share

Bad93%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, 20x20x5 air filter is a $681K/yr Amazon United States market (110K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 58/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

20x20x5 air filter market data

Units sold / yr: 13K–15K; avg 750–1,000/product
Revenue / yr: $719K–$863K; units × avg price
Conversion rate: 10.7%
Avg BSR: #464
Page quality: 0%
Prime: 56%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 63 months
Avg seller age: 180 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 falling

Sellers

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

66%

Top 20: 100%

Open market

Filterbuy41%
Nordic Pure24%
AIRx Filters18%
BNX5%
Lennox4%
Sikidink3%
Open — no brand owns it (2 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — +25.5% search growth over the last 90 days.

Peak months: Aug, Sep · busiest ÷ quietest = 7.6×

Open Trend

Top 20x20x5 air filter search terms

20x20x5 air filter52K/yr +35.9%9.9% conv.
20x20x5 furnace filter14K/yr -6.1%8.0% conv.
20x20x58K/yr +28.1%7.8% conv.
air filter 20x20x58K/yr +37.4%10.3% conv.
20x20x5 air filter merv 116K/yr +27.2%7.3% conv.
20 x 20 x 5 air filter4K/yr +52.2%10.8% conv.
20x20x5 air filter merv 134K/yr +30.3%4.4% conv.
20x20x5 filter4K/yr +29.1%8.3% conv.
furnace filters 20x20x54K/yr -0.2%10.5% conv.
furnace filter 20x20x54K/yr -0.1%12.2% conv.

All search terms

Top 20x20x5 air 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Filterbuy 20x20x5 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1011 Lennox X0585 and More (Actual Size: 19.63 x 19.88 x 4.38)

Filterbuy$59.244.6★19,747 rev

Nordic Pure 20x20x5 (19_5/8 x 19_7/8 x 4_3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack

Nordic Pure$56.814.7★2,197 rev

Nordic Pure 20x20x5 Honeywell/Lennox Replacement MERV 12 Air Filter 1 Pack

Nordic Pure$28.834.7★2,197 rev

Filterbuy 20x20x5 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1011 Lennox X0585 and More (Actual Size: 19.63 x 19.88 x 4.38)

Filterbuy$78.604.6★13,433 rev

AIRx Filters 20x20x5 Furnace Filter MERV 8 HVAC AC Air Filter Replacement for Honeywell FC100A1011 FC200E1011 CF200A1024 Dust Pollen Lint & Dander Control 2-Pack

AIRx Filters$55.024.3★114 rev

Newest

by launch date

20x20x5 Furnace Filter MERV13 Compatible with Lennox X0585 HCF14-11 for Honeywell FC100A1011 Foldable(Actual Size:19.88 x 19.63 x 4.38 In) 2-Pack

Sikidink$55.8221 rev

6mo ago

PZHARQG X0585 Filter Replacement 20x20x5 Compatible with Lennox X0585 HCF14-11 for Honeywell FC100A1011 MERV 13 Furnace HVAC Foldable

PZHARQG$38.7415 rev

7mo ago

BNX TruFilter 20x20x5 (19.88 x 19.88 x 4.38 Honeywell Compatible 4) MERV 11 Air Filter (2-Pack) - MADE IN USA - HVAC AC Furnace Filters Health Allergies Mold Bacteria Smoke MPR 1200 FPR 7

BNX$67.786,309 rev

11mo ago

BNX TruFilter 20x20x5 (19.88 x 19.88 x 4.38 Honeywell Compatible 4) MERV 13 Air Filter (2-Pack) - MADE IN USA - HVAC AC Furnace Filters Health Allergies Mold Bacteria Smoke MPR 1900 FPR 10

BNX$78.5558 rev

1y ago

AIRX FILTERS WICKED CLEAN AIR. 20x20x5 Air Filter MERV 8 Compatible with Honeywell FC100A1011 Furnace Filter 2 Pack

AIRx Filters$55.53135 rev

2y ago

What buyers say about 20x20x5 air filter

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

What buyers love

Filtration28%

“Excellent filter”

Size-Overall25%

“Good fit”

Quality-Overall10%

“seem well-made”

Value For Money7%

“Fair price”

Advertised Vs Actual Product5%

“Product was just as advertised”

Efficiency4%

“Just as effective”

Ease Of Use3%

“Ease of use”

Storage Capacity2%

“Convenient Storage”

Durability2%

“Pleats haven't collapsed after three months of use”

Design-Overall2%

“Well built, I'll purchase it again”

What buyers complain about

Size-Overall28%

“still could not get it to fit”

Filtration27%

“Filters are very poor quality”

Value For Money13%

“very pricey”

Quality-Overall13%

“Poor quality”

Thickness4%

“The material feels thicker than my last brand”

Assembly/Installation2%

“has to be assembled with cheap plastic clips”

Top return reasons

Size-Overall71%

Filtration15%

Compatibility-Overall5%

Advertised Vs Actual Product3%

Maintenance And Repair1%

Value For Money1%

Defective Material/Parts1%

Ease Of Use1%

Functionality-Overall0%

Thickness0%

Common questions

Is 20x20x5 air filter profitable to sell on Amazon United States?: The niche generates $681K/yr across 16 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +25.5%. Flapen's verdict: Worth a look (58/100).
How competitive is the 20x20x5 air filter niche?: 8 brands and 18 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in 20x20x5 air filter?: Top complaints mined from reviews: Size-Overall, Filtration, Value For Money. The return rate is 0.8%.
When does demand for 20x20x5 air filter peak?: Demand peaks in Aug–Sep; the busiest month runs 7.6× the quietest.
What does it cost to enter the 20x20x5 air filter niche?: Listings span $28.83–$88.51; the average listing price is $57.54 (sweet spot $15–$100). The average incumbent carries 2,851 reviews — the moat a new listing must climb.