---
title: "20x25x5 Air Filter Merv 13 — $120K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/20x25x5-air-filter-merv-13"
last_updated: "2026-08-08T12:19:07.972Z"
locale: en
meta:
description: "Niche score 52/100 · $120K/yr market · 18K searches/yr. A concentrated shelf (top 5 take 78% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $120K/yr market · 18K searches/yr. A concentrated shelf (top 5 take 78% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "20x25x5 Air Filter Merv 13 — $120K/yr Amazon US Niche (2026) - Flapen"
---
# **20x25x5 air filter merv 13**
**Worth a look**
Shows a sweet-spot price point ($70.66 avg), but a concentrated shelf (top 5 take 78% of clicks) keeps it on the watch list.
Market size 28Growth 77Conversion 85Competition 18Returns 84Price range 70Avg price 86Brand share 27Review moat 63Quality gap 28
**Avg price**
**Great****$70.66**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.6%**
return rate — above 5% kills the launch gate
**Growth**
**Great****+65.8%**
90-day search growth — must beat 0% to launch
**Price range**
**Good****$31.08–$129.32**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****975.83**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$120K**
$120K/yr · 18K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 20x25x5 air filter merv 13 is a $120K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jul. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **20x25x5 air filter merv 13 market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$106K–$141K**
- units × avg price
- **Conversion rate**
- **9.5%**
- **Avg BSR**
- **#391**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **83%**
- **Out of stock**
- **18.3%**
- **Avg brand age**
- **54 months**
- **Avg seller age**
- **191 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**31**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**5%**
- Filterbuy43% - Filtrete21% - Trion10% - DerBlue9% - AIRx Filters6% - Lennox6% - Open — no brand owns it (2 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — +65.8% search growth over the last 90 days.
2K2KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 3.1×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/20x25x5-air-filter-merv-13/trend)
## **Top 20x25x5 air filter merv 13 search terms**
- **20x25x5 air filter merv 13**10K/yr+44.6%8.5% conv. - **merv 13 20x25x5**4K/yr+81.5%7.4% conv. - **20x25x5 merv 13**3K/yr+121.4%8.4% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/20x25x5-air-filter-merv-13/search-terms)
## **Top 20x25x5 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.
0%15%$18K30%$36K45%$54K60%$72K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Filterbuy 20x25x5 Air Filter MERV 13 Optimal Smoke & 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**$69.48**4.6★2,466 rev](https://www.amazon.com/dp/B00NVICH7W) [2**Filtrete 20x25x5 AC Furnace Air Filter MERV 13 MPR 1900 Premium Allergen Bacteria & Virus Filter Electrostatic Air Cleaning Filter 2-Pack (Actual Size 19.56 x 24.13 x 4.75 in)**Filtrete**$76.51**4.3★379 rev](https://www.amazon.com/dp/B0DCGN6CHP) [3**DerBlue 2PCS 20x25x5 MERV 13 Furnace Filter Replacement Compatible with Lennox X6673 HCF20 Pleated HVAC Foldable Design for Easy Installation & Space-Saving (Actual Size: 19.75 x 24.75 x 4.38 In)**DerBlue**$48.09**4.2★60 rev](https://www.amazon.com/dp/B0GRSP6X96) [4**20x25x5 Air Bear Pleated HVAC Air Filter MERV 13 (4-Pack) (Actual Size: 19.75 x 24.25 x 4.9 Inches) compatible with part no: 266649-102**Trion**$129.32**5.0★8 rev](https://www.amazon.com/dp/B0GSH8J93B) [5**Lennox 19L17-20 x 25 x 5 Healthy Climate HCF20-13 Air Filter MERV 13 (2-Pack)**Lennox**$99.63**4.8★274 rev](https://www.amazon.com/dp/B086658S5Q)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Air Bear 20x25x5 Air Filter MERV 13 (2-Pack) Pleated HVAC Air Filter Replacement (Actual Size: 19.75 x 24.25 x 4.9 Inches) Compatible with part no: 266649-102**Trion**$74.48**2 rev3mo ago](https://www.amazon.com/dp/B0GWKKBN65) [**20x25x5 Air Bear Pleated HVAC Air Filter MERV 13 (4-Pack) (Actual Size: 19.75 x 24.25 x 4.9 Inches) compatible with part no: 266649-102**Trion**$129.32**8 rev4mo ago](https://www.amazon.com/dp/B0GSH8J93B) [**DerBlue 2PCS 20x25x5 MERV 13 Furnace Filter Replacement Compatible with Lennox X6673 HCF20 Pleated HVAC Foldable Design for Easy Installation & Space-Saving (Actual Size: 19.75 x 24.75 x 4.38 In)**DerBlue**$48.09**60 rev11mo ago](https://www.amazon.com/dp/B0GRSP6X96) [**Filtrete 20x25x5 AC Furnace Air Filter MERV 13 MPR 1900 Premium Allergen Bacteria & Virus Filter Electrostatic Air Cleaning Filter 2-Pack (Actual Size 19.56 x 24.13 x 4.75 in)**Filtrete**$76.51**379 rev1y ago](https://www.amazon.com/dp/B0DCGN6CHP) [**AIRX FILTERS WICKED CLEAN AIR. 20x25x5 Air Filter MERV 13 Compatible with Lennox X6673 Air Filter 2 Pack**AIRx Filters**$69.82**46 rev2y ago](https://www.amazon.com/dp/B0CF7G93R6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Air Bear 20x25x5 Air Filter MERV 13 (2-Pack) Pleated HVAC Air Filter Replacement (Actual Size: 19.75 x 24.25 x 4.9 Inches) Compatible with part no: 266649-102**Trion**$74.48**5.0★**▲ 143%**](https://www.amazon.com/dp/B0GWKKBN65) [**20x25x5 Air Bear Pleated HVAC Air Filter MERV 13 (4-Pack) (Actual Size: 19.75 x 24.25 x 4.9 Inches) compatible with part no: 266649-102**Trion**$129.32**5.0★**▲ 120%**](https://www.amazon.com/dp/B0GSH8J93B) [**DerBlue 2PCS 20x25x5 MERV 13 Furnace Filter Replacement Compatible with Lennox X6673 HCF20 Pleated HVAC Foldable Design for Easy Installation & Space-Saving (Actual Size: 19.75 x 24.75 x 4.38 In)**DerBlue**$48.09**4.2★**▲ 94%**](https://www.amazon.com/dp/B0GRSP6X96) [**AIRX FILTERS WICKED CLEAN AIR. 20x25x5 Air Filter MERV 13 Compatible with Lennox X6673 Air Filter 2 Pack**AIRx Filters**$69.82**4.6★**▲ 80%**](https://www.amazon.com/dp/B0CF7G93R6) [**AIRX FILTERS WICKED CLEAN AIR. 20x25x5 Air Filter MERV 13 Compatible with Honeywell FC100A1037 Furnace Filter 2 pack**AIRx Filters**$63.65**4.5★**▲ 43%**](https://www.amazon.com/dp/B0CF85K85J)
**~~View all trending →~~**
## **What buyers say about 20x25x5 air filter merv 13**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**27%
*“I got a higher quality filter”*
**Size-Overall**19%
*“Fits perfectly”*
**Quality-Overall**18%
*“Excellent Quality”*
**Value For Money**9%
*“good value”*
**Advertised Vs Actual Product**5%
*“as advertised”*
**Efficiency**2%
*“Work well”*
**Strength**2%
*“They are solidly made”*
**Thickness**2%
*“Great product the condition is great the thickness in the product is what i need for my ac system”*
**Assembly/Installation**1%
*“Assembly took a couple of minutes”*
**Locally Manufactured**1%
*“made in USA”*
### **What buyers complain about **
**Size-Overall**50%
*“Didn't fit”*
**Filtration**14%
*“Weird separation in the filter”*
**Advertised Vs Actual Product**4%
*“Shame on me for not reading the spec sheet carefully”*
**Compatibility-Overall**4%
*“Does not fit Lennox EL296UHV”*
**Quality-Overall**3%
*“I would expect better quality assurance”*
**Measurement/Reading Accuracy**3%
*“inconsistent”*
**Thickness**2%
*“a bit too thin”*
**Design-Overall**2%
*“Foldable design-do NOT like that design”*
**Value For Money**2%
*“just more expensive”*
**Ease Of Use**1%
*“I have trouble getting the door to close”*
### **Top return reasons **
**Size-Overall**70%
**Filtration**14%
**Compatibility-Overall**9%
**Advertised Vs Actual Product**2%
**Defective Material/Parts**1%
**Value For Money**1%
**Assembly/Installation**1%
**Product Condition**1%
**Functionality-Overall**0%
**Thickness**0%
## **Common questions**
- **Is 20x25x5 air filter merv 13 profitable to sell on Amazon United States?**
- The niche generates $120K/yr across 12 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +65.8%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the 20x25x5 air filter merv 13 niche?**
- 8 brands and 31 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in 20x25x5 air filter merv 13?**
- Top complaints mined from reviews: Size-Overall, Filtration, Advertised Vs Actual Product. The return rate is 1.6%.
- **When does demand for 20x25x5 air filter merv 13 peak?**
- Demand peaks in Jul; the busiest month runs 3.1× the quietest.
- **What does it cost to enter the 20x25x5 air filter merv 13 niche?**
- Listings span $31.08–$129.32; the average listing price is $70.66 (sweet spot $15–$100). The average incumbent carries 976 reviews — the moat a new listing must climb.
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