---
title: "Merv 11 Air Filters 20x25x5 — $79K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/merv-11-air-filters-20x25x5"
last_updated: "2026-08-07T17:40:36.654Z"
locale: en
meta:
description: "Niche score 51/100 · $79K/yr market · 5K searches/yr. A concentrated shelf (top 5 take 86% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $79K/yr market · 5K searches/yr. A concentrated shelf (top 5 take 86% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Merv 11 Air Filters 20x25x5 — $79K/yr Amazon US Niche (2026) - Flapen"
---
# **merv 11 air filters 20x25x5**
**Worth a look**
Shows searches that convert (20.6% search→purchase), but a concentrated shelf (top 5 take 86% of clicks) keeps it on the watch list.
Market size 20Growth 92Conversion 100Competition 12Returns 94Price range 76Avg price 83Brand share 14Review moat 35Quality gap 18
**Conversion**
**Incredible****20.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Growth**
**Great****+102.8%**
90-day search growth — must beat 0% to launch
**Avg price**
**Great****$77.33**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$46.52–$116.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****3,030.7**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$79K**
$79K/yr · 5K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, merv 11 air filters 20x25x5 is a $79K/yr Amazon United States market (5K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 51/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **merv 11 air filters 20x25x5 market data**
- **Units sold / yr**
- **1K–1K**
- avg 100–250/product
- **Revenue / yr**
- **$77K–$97K**
- units × avg price
- **Conversion rate**
- **20.6%**
- **Avg BSR**
- **#336**
- **Page quality**
- **0%**
- **Prime**
- **20%**
- **Sponsored**
- **80%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **209 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▲rising
**Sellers**
**20**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**3%**
- GeneralAire58% - YGACHE21% - Filterbuy9% - AirPurete3% - General Filters3% - Minibird3% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 102 weeks — +102.8% search growth over the last 90 days.
1K800Spike '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 2.8×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/merv-11-air-filters-20x25x5/trend)
## **Top merv 11 air filters 20x25x5 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.
0%15%$12K30%$24K45%$36K60%$48K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter Actual Size:19 5/8 x 24 3/16 x 4 15/16 - Case of 3 Filters**GeneralAire**$116.67**4.7★218 rev](https://www.amazon.com/dp/B08CHL2DG4) [2**Generalaire 6FM2025 Reservepro 4551 Air Filter-20x 25x 5-Genuine OEM Replacement for Old 4501**YGACHE**$49.62**4.6★62 rev](https://www.amazon.com/dp/B07MXN7TCH) [3**Filterbuy 20x25x5 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1037 Lennox X6673 and More (Actual Size: 19.88 x 24.75 x 4.38)**Filterbuy**$54.59**4.6★13,433 rev](https://www.amazon.com/dp/B00VQNSO5S) [4**GeneralAire # 4551 20x25x5 furnace filter -Exact Dimensions are 19 5/8x 24 3/16x 4 15/16- Please Measure Carefully Before Ordering !-case of 2 filters**GeneralAire**$81.69**4.8★374 rev](https://www.amazon.com/dp/B078RD4MBQ) [5**AirPurete 20x25x5 MERV 11 Air Filter Replacement for GeneralAire 4551 Trion 259112-102 MAC 2000 and More Pleated Furnace Filter (Actual Size: 19 5/8 x 24 3/16 x 4 15/16) | Pack of 2**AirPurete**$68.25**4.8★9 rev](https://www.amazon.com/dp/B0FH2ZHNZK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**AirPurete 20x25x5 MERV 11 Air Filter Replacement for GeneralAire 4551 Trion 259112-102 MAC 2000 and More Pleated Furnace Filter (Actual Size: 19 5/8 x 24 3/16 x 4 15/16) | Pack of 2**AirPurete**$68.25**9 rev1y ago](https://www.amazon.com/dp/B0FH2ZHNZK) [**GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter -Exact Dimensions are 19 5/8x 24 3/16x 4 15/16- Please Measure Carefully Before Ordering !-**General Filters**$49.72**5 rev1y ago](https://www.amazon.com/dp/B0FGQPY2R8) [**Filtrete 20x25x5 Air Filter MERV 11 MPR 1000 Micro Allergen Defense 2-Pack Fits Lennox AC Furnace HVAC Filters for Home Pleated Electrostatic (Actual Size 19.63 x 24.75 x 4.31 in)**Filtrete**$46.52**2,304 rev3y ago](https://www.amazon.com/dp/B0BVXDDZH7) [**GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter Actual Size:19 5/8 x 24 3/16 x 4 15/16 - Case of 3 Filters**GeneralAire**$116.67**218 rev5y ago](https://www.amazon.com/dp/B08CHL2DG4) [**Generalaire 6FM2025 Reservepro 4551 Air Filter-20x 25x 5-Genuine OEM Replacement for Old 4501**YGACHE**$49.62**62 rev7y ago](https://www.amazon.com/dp/B07MXN7TCH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**AirPurete 20x25x5 MERV 11 Air Filter Replacement for GeneralAire 4551 Trion 259112-102 MAC 2000 and More Pleated Furnace Filter (Actual Size: 19 5/8 x 24 3/16 x 4 15/16) | Pack of 2**AirPurete**$68.25**4.8★**▲ 65%**](https://www.amazon.com/dp/B0FH2ZHNZK) [**3-pk 6FM2025 #4551 Air Filter-20x 25x 5-Genuine Replacement for old #4501-Please Measure Carefully Before OrderingF**Minibird**$116.86**4.9★**▲ 36%**](https://www.amazon.com/dp/B07MXN7XY9) [**GeneralAire # 4551 for 4501 ReservePro 20x25x5 furnace filter Actual Size:19 5/8 x 24 3/16 x 4 15/16 - Case of 3 Filters**GeneralAire**$116.67**4.7★**▲ 31%**](https://www.amazon.com/dp/B08CHL2DG4) [**Generalaire 6FM2025 Reservepro 4551 Air Filter-20x 25x 5-Genuine OEM Replacement for Old 4501**YGACHE**$49.62**4.6★**— 9%**](https://www.amazon.com/dp/B07MXN7TCH) [**Filterbuy 20x25x5 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack) Pleated HVAC AC Furnace Filters for Honeywell FC100A1037 Lennox X6673 and More (Actual Size: 19.88 x 24.75 x 4.38)**Filterbuy**$54.59**4.6★**— 2%**](https://www.amazon.com/dp/B00VQNSO5S)
**~~View all trending →~~**
## **What buyers say about merv 11 air filters 20x25x5**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Im sure this filter is just as good as any other”*
**Filtration**19%
*“Good filter”*
**Size-Overall**17%
*“Fits perfectly”*
**Value For Money**17%
*“Money well spent”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Efficiency**3%
*“Works well”*
**Assembly/Installation**2%
*“Easy install”*
**Durability**1%
*“Quality and durability outstanding”*
### **What buyers complain about **
**Size-Overall**55%
*“Didn't fit”*
**Filtration**10%
*“Not all filters are the same”*
**Compatibility-Overall**6%
*“Does not fit Lennox EL296UHV”*
**Value For Money**3%
*“just more expensive”*
**Thickness**3%
*“a bit too thin”*
**Quality-Overall**3%
*“I would expect better quality assurance”*
**Advertised Vs Actual Product**2%
*“Shame on me for not reading the spec sheet carefully”*
**Drainage**1%
*“Money down the drain”*
**Functionality-Overall**1%
*“that did not work out”*
**Measurement/Reading Accuracy**1%
*“O. Don't buy this its not a true 20x25x5 clearly they don't haven't measured this”*
### **Top return reasons **
**Size-Overall**72%
**Filtration**12%
**Compatibility-Overall**9%
**Advertised Vs Actual Product**2%
**Value For Money**2%
**Defective Material/Parts**1%
**Product Condition**1%
**Functionality-Overall**0%
**Certifications**0%
**Measurement/Reading Accuracy**0%
## **Common questions**
- **Is merv 11 air filters 20x25x5 profitable to sell on Amazon United States?**
- The niche generates $79K/yr across 10 tracked products. 90-day search growth is +102.8%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the merv 11 air filters 20x25x5 niche?**
- 7 brands and 20 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in merv 11 air filters 20x25x5?**
- Top complaints mined from reviews: Size-Overall, Filtration, Compatibility-Overall. The return rate is 1.1%.
- **When does demand for merv 11 air filters 20x25x5 peak?**
- Demand peaks in Oct–Nov; the busiest month runs 2.8× the quietest.
- **What does it cost to enter the merv 11 air filters 20x25x5 niche?**
- Listings span $46.52–$116.86; the average listing price is $77.33 (sweet spot $15–$100). The average incumbent carries 3,031 reviews — the moat a new listing must climb.
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