Is 20x36x1 air filter profitable to sell on Amazon United States?

The niche generates $279K/yr across 9 tracked products. 90-day search growth is +26.6%. Flapen's verdict: Skip it (49/100).

How competitive is the 20x36x1 air filter niche?

5 brands and 7 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in 20x36x1 air filter?

Top complaints mined from reviews: Value For Money, Size-Overall. The return rate is 0.6%.

When does demand for 20x36x1 air filter peak?

Demand peaks in Jul–Aug; the busiest month runs 1.7× the quietest.

What does it cost to enter the 20x36x1 air filter niche?

Listings span $34.73–$91.66; the average listing price is $64.46 (sweet spot $15–$100). The average incumbent carries 16,063 reviews — the moat a new listing must climb.

20x36x1 air filter

Skip it

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

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Price range

Incredible$34.73–$91.66

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

Conversion

Great11.4%

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

Avg price

Great$64.46

avg listing price — sweet spot $15–$100

Growth

Good+26.6%

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

Market size

Good$279K

$279K/yr · 38K searches

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad16,063.11

avg incumbent reviews — the moat a new listing must climb

Competition

Bad89%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, 20x36x1 air filter is a $279K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 49/100.

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

20x36x1 air filter market data

Units sold / yr: 4K–5K; avg 250–500/product
Revenue / yr: $258K–$322K; units × avg price
Conversion rate: 11.4%
Avg BSR: #67
Page quality: 0%
Prime: 33%
Sponsored: 89%
Out of stock: 0.0%
Avg brand age: 79 months
Avg seller age: 198 days

Competition & brand share

The top 5 products capture 89% 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

89%

Top 20: 100%

Open market

Filtrete45%
Filterbuy23%
True Blue21%
Filter King8%
Castle Filters3%

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — +26.6% search growth over the last 90 days.

Peak months: Jul, Aug · busiest ÷ quietest = 1.7×

Open Trend

Top 20x36x1 air filter search terms

20x36x1 air filter27K/yr +24.5%9.6% conv.
air filter 20x36x16K/yr +28.0%10.3% conv.
20x36x1 air filters for home6K/yr +36.0%9.8% conv.

All search terms

Top 20x36x1 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 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Filtrete 20x36x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defense 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 6 Pack (Actual Size 19.81x 35.81x0.81 in)

Filtrete$73.374.8★11,774 rev

True Blue Allergen 20x36x1 Air Filter MERV 11 4-Pack

True Blue$56.644.5★6,830 rev

Filterbuy 20x36x1 Air Filter MERV 8 Essential Dust & Allergy Defense (4-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 19.75 x 35.75 x 0.75)

Filterbuy$74.254.6★236 rev

Filterbuy 20x36x1 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 19.75 x 35.75 x 0.75)

Filterbuy$48.834.6★68,921 rev

Filter King 20x36x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 19.5 x 35.5 x .75)

Filter King$61.484.6★3,373 rev

Newest

by launch date

Castle Filters One-Year HVAC Furnace Filter MERV 6 20x36x1 1 Count (Pack of 1)

Castle Filters$34.7350 rev

7y ago

Filter King 20x36x1 Air Filter (MERV 8) (6-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 19.5 x 35.5 x .75)

Filter King$83.032,030 rev

7y ago

Filtrete 20x36x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defense 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 6 Pack (Actual Size 19.81x 35.81x0.81 in)

Filtrete$73.3711,774 rev

8y ago

Filter King 20x36x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: 19.5 x 35.5 x .75)

Filter King$61.483,373 rev

8y ago

True Blue Allergen 20x36x1 Air Filter MERV 11 4-Pack

True Blue$56.646,830 rev

13y ago

What buyers say about 20x36x1 air filter

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

What buyers love

Quality-Overall100%

“Good product and fit well”

What buyers complain about

Value For Money50%

“That cost more than these filters”

Size-Overall50%

“Did not fit”

Top return reasons

Size-Overall74%

Filtration10%

Value For Money4%

Advertised Vs Actual Product3%

Functionality-Overall3%

Compatibility-Overall2%

Product Condition2%

Quality-Overall1%

Thickness1%

Thin1%

Common questions

Is 20x36x1 air filter profitable to sell on Amazon United States?: The niche generates $279K/yr across 9 tracked products. 90-day search growth is +26.6%. Flapen's verdict: Skip it (49/100).
How competitive is the 20x36x1 air filter niche?: 5 brands and 7 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in 20x36x1 air filter?: Top complaints mined from reviews: Value For Money, Size-Overall. The return rate is 0.6%.
When does demand for 20x36x1 air filter peak?: Demand peaks in Jul–Aug; the busiest month runs 1.7× the quietest.
What does it cost to enter the 20x36x1 air filter niche?: Listings span $34.73–$91.66; the average listing price is $64.46 (sweet spot $15–$100). The average incumbent carries 16,063 reviews — the moat a new listing must climb.