20x20x4 air filter merv 13
Skip itA small market ($29K/yr) — this niche doesn't clear our bar today.
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great$68.47avg listing price — sweet spot $15–$100
Price range
Good$39.73–$135.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.0%search→purchase rate — share of searches ending in a sale
Growth
Good+25.5%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay2,669.14avg incumbent reviews — the moat a new listing must climb
Competition
Bad74%top-5 click share — a locked-up shelf
Brand share
Bad92%top-5 brand share — brand-locked demand
Market size
Bad$29K$29K/yr · 8K searches
According to Flapen's Amazon United States niche tracking, 20x20x4 air filter merv 13 is a $29K/yr Amazon United States market (8K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 44/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
20x20x4 air filter merv 13 market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $51K–$68K
- units × avg price
- Conversion rate
- 5.0%
- Avg BSR
- #543
- Page quality
- 0%
- Prime
- 71%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 64 months
- Avg seller age
- 185 days
Competition & brand share
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
21
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
74%
Top 20: 100%
Open market
6%
- Filterbuy44%
- Filtrete20%
- BNX12%
- Simply11%
- DerBlue6%
- filvita3%
- Open — no brand owns it (3 brands, 6%)
Demand
Weekly Amazon search volume, last 21 weeks — +25.5% search growth over the last 90 days.Top 20x20x4 air filter merv 13 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 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Filterbuy 20x20x4 Air Filter MERV 13 Optimal Smoke & Allergy Defense (2-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 19.50 x 19.50 x 3.63)
Filterbuy$58.324.3★1,797 rev
Filterbuy 20x20x4 Air Filter MERV 13 Optimal Smoke & Allergy Defense (4-Pack) Electrostatic Pleated HVAC AC Furnace Filters Replacement Made in USA (Actual Size: 19.50 x 19.50 x 3.63)
Filterbuy$95.084.6★21,899 rev
Filtrete 20x20x4 AC Furnace Air Filter MERV 13 MPR 1900 Premium Allergen Bacteria & Virus Filter Electrostatic Air Cleaning Filter 2-Pack (Actual Size 19.75 x 19.75 x 4.31 in)
Filtrete$69.094.3★379 rev
BNX TruFilter 20x20x4 (19.5 x 19.5 x 3.63 Slim Fit) MERV 13 Air Filter (2-Pack) - MADE IN USA - Air Conditioner HVAC AC Furnace Filters Health Allergies Mold Bacteria Smoke MPR 1900 FPR 10
BNX$52.214.4★645 rev
Filtrete 20x20x4 AC Furnace Air Filter MPR 1550 MERV 12 Fits Honeywell CERTIFIED Asthma & Allergy Friendly Electrostatic Air Cleaning Filter 2-Pack (Actual Size 19.88x19.88x4.31 in)
Filtrete$54.484.6★5,199 rev
Newest
by launch date
FC100A1011 Air Filter Replacement Compatible With Honeywell FC100A1011 20x20x4 HVAC Furnace Filters MERV 13 AC Filter (1 Pack) (Actual Size: 19.94 x 19.75 x 4.38 Inches)
filvita$39.731 rev
ShueBee 2-Pack MERV 13 Air Filters Foldable Replacement for Honeywell FC100A1011 Pleated Furnace Filter 20x20x4 (Actual 19.99 x 19.99 x 4.59) Easy Install & Space-Saving
ShueBee$49.988 rev
DerBlue 2PACK 20x20x4 MERV 13 Furnace Filter Replacement Compatible with Honeywell FC100A1011 Pleated HVAC Foldable Design for Easy Installation & Space-Saving(Actual Size: 19.94 x 19.75 x 4.38 In)
DerBlue$48.5565 rev
Simply 20x20x4 Air Filter MERV 13 6 Pack Furnace Air Filter for HVAC (Actual Size:19.5x19.5x3.63) DUST Pet & Allergy Control
Simply$70.883,094 rev
Simply 20x20x4 Air Filter MERV 13 4 Pack Furnace Air Filter for HVAC (Actual Size:19.5x19.5x3.63) DUST Pet & Allergy Control
Simply$86.14532 rev
Trending
90-day click momentumShueBee 2-Pack MERV 13 Air Filters Foldable Replacement for Honeywell FC100A1011 Pleated Furnace Filter 20x20x4 (Actual 19.99 x 19.99 x 4.59) Easy Install & Space-Saving
ShueBee$49.984.6★
FC100A1011 Air Filter Replacement Compatible With Honeywell FC100A1011 20x20x4 HVAC Furnace Filters MERV 13 AC Filter (1 Pack) (Actual Size: 19.94 x 19.75 x 4.38 Inches)
filvita$39.735.0★
Simply 20x20x4 Air Filter MERV 13 4 Pack Furnace Air Filter for HVAC (Actual Size:19.5x19.5x3.63) DUST Pet & Allergy Control
Simply$86.144.3★
DerBlue 2PACK 20x20x4 MERV 13 Furnace Filter Replacement Compatible with Honeywell FC100A1011 Pleated HVAC Foldable Design for Easy Installation & Space-Saving(Actual Size: 19.94 x 19.75 x 4.38 In)
DerBlue$48.553.9★
Nordic Pure 20x20x4 (19_1/2 x 19_1/2 x 3_5/8) Pleated MERV 12 Air Filters 2 Pack
Nordic Pure$41.434.5★
What buyers say about 20x20x4 air filter merv 13
What buyers praise and complain about, mined from review topics.What buyers love
“Exact fit”
“Quality filter”
“Quality filter”
“Price was reasonable”
“Work as advertised”
“Easy to assemble”
“Perfect fit for my Honeywell filter holder”
“It feels durable enough to hold up through normal use without collapsing or bending”
“Works well”
“not flimsy at all”
What buyers complain about
“To big”
“Wish it was cheaper”
“DO NOT BUY THIS FOR A CARRIER UNIT THAT TAKES A 20X20x4 filter”
“The expensive brand that I bought locally doesnt even glue the filter media to the paper on the sides”
“Doesn't fit nominally size as advertised”
“it barely lasted 6 months”
“Also comes unassembled”
“Didn't work for me”
“This did not fit my 20x20x4 HVAC”
“the filter is one thin layer thick”
Top return reasons
Common questions
- Is 20x20x4 air filter merv 13 profitable to sell on Amazon United States?
- The niche generates $29K/yr across 14 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +25.5%. Flapen's verdict: Skip it (44/100).
- How competitive is the 20x20x4 air filter merv 13 niche?
- 9 brands and 21 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in 20x20x4 air filter merv 13?
- Top complaints mined from reviews: Size-Overall, Value For Money, Filtration. The return rate is 1.3%.
- What does it cost to enter the 20x20x4 air filter merv 13 niche?
- Listings span $39.73–$135.10; the average listing price is $68.47 (sweet spot $15–$100). The average incumbent carries 2,669 reviews — the moat a new listing must climb.