---
title: "16x25x1 Fiberglass Air Filters — $77K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/16x25x1-fiberglass-air-filters"
last_updated: "2026-08-08T09:41:35.613Z"
locale: en
meta:
description: "Niche score 39/100 · $77K/yr market · 40K searches/yr · $49.41 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $77K/yr market · 40K searches/yr · $49.41 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "16x25x1 Fiberglass Air Filters — $77K/yr Amazon US Niche (2026) - Flapen"
---
# **16x25x1 fiberglass air filters**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 19Growth 19Conversion 49Competition 44Returns 96Price range 95Avg price 93Brand share 0Review moat 25Quality gap 17
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Price range**
**Incredible****$29.68–$77.52**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$49.41**
avg listing price — sweet spot $15–$100
**Conversion**
**Okay****3.9%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,573.65**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$77K**
$77K/yr · 40K searches
**Growth**
**Bad****-11.5%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, 16x25x1 fiberglass air filters is a $77K/yr Amazon United States market (40K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **16x25x1 fiberglass air filters market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$74K–$99K**
- units × avg price
- **Conversion rate**
- **3.9%**
- **Avg BSR**
- **#164**
- **Page quality**
- **0%**
- **Prime**
- **35%**
- **Sponsored**
- **65%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**5 **▼falling
**Sellers**
**19**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 96%
**Open market**
**0%**
- Glasfloss85% - Filtrete9% - Simply2% - AIRx Filters2% - Amazon Basics1% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 16 weeks — -11.5% search growth over the last 90 days.
800600Spike '26Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/16x25x1-fiberglass-air-filters/trend)
## **Top 16x25x1 fiberglass air filters search terms**
- **glasfloss filters**10K/yr+18.5%1.3% conv. - **glasfloss air filters**7K/yr+33.6%1.6% conv. - **glasfloss**5K/yr+38.3%1.6% conv. - **glasfloss air filter**6K/yr+0.4%1.5% conv. - **glasfloss industries**4K/yr+7.5%1.7% conv. - **16x25x1 fiberglass furnace filters**3K/yr-66.1%6.6% conv. - **16x25x1 fiberglass air filters**3K/yr+56.2%5.9% conv. - **16x25x1 merv 8 fiberglass furnace filters**3K/yr-82.3%6.6% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/16x25x1-fiberglass-air-filters/search-terms)
## **Top 16x25x1 fiberglass air filters 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%10%$8K20%$15K30%$23K40%$31K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**16x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss**Glasfloss**$32.79**4.7★808 rev](https://www.amazon.com/dp/B0CB7JL8VZ) [2**Filtrete 16x25x1 Air Filter 3M MERV 1 HVAC Flat Furnace Filter Replacement 6-Pack (Actual Size 15.98x25x0.98 in)**Filtrete**$33.99**4.4★371 rev](https://www.amazon.com/dp/B0D6839LGX) [3**Glasfloss 20x25x1 MERV 10 Pleated AC Furnace Air Filters. Box of 6**Glasfloss**$42.73**4.8★2,728 rev](https://www.amazon.com/dp/B089KSD2LG) [4**Glasfloss 16x20x1 MERV 10 Pleated AC Furnace Air Filters. Box of 6**Glasfloss**$37.43**4.8★2,728 rev](https://www.amazon.com/dp/B089KTKN7J) [5**Glasfloss 20x25x4 MERV 10 AC Furnace 4 Pleated Air Filters. Box of 3**Glasfloss**$50.89**4.8★2,728 rev](https://www.amazon.com/dp/B089KSYQRX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Quantity 3.**Glasfloss**$77.52**2 rev9mo ago](https://www.amazon.com/dp/B0FY4F5PM5) [**Amazon Basics MERV 5 AC Furnace Air Filter 16x25x1 inches 6-Pack (Actual size: 15.75 x 24.75 x 0.75)**Amazon Basics**$29.68**17,081 rev11mo ago](https://www.amazon.com/dp/B0DQPBQW48) [**Filtrete 16x25x1 Air Filter 3M MERV 1 HVAC Flat Furnace Filter Replacement 6-Pack (Actual Size 15.98x25x0.98 in)**Filtrete**$33.99**371 rev2y ago](https://www.amazon.com/dp/B0D6839LGX) [**20x20x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss**Glasfloss**$32.24**808 rev3y ago](https://www.amazon.com/dp/B0CB7J2184) [**16x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss**Glasfloss**$32.79**808 rev3y ago](https://www.amazon.com/dp/B0CB7JL8VZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Glasfloss 19-7/8x21-1/2x1 MERV 10 Pleated Filters Fits Carrier. 6-Pack**Glasfloss**$66.74**4.8★**▲ 198%**](https://www.amazon.com/dp/B089KV1Q8R) [**Glasfloss 16x20x2 MERV 10 AC Furnace Air Filter. 12 Pack**Glasfloss**$72.66**4.8★**▲ 152%**](https://www.amazon.com/dp/B07M7BBTJ3) [**Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Quantity 3.**Glasfloss**$77.52**5.0★**▲ 96%**](https://www.amazon.com/dp/B0FY4F5PM5) [**Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Qty 2**Glasfloss**$55.09**4.8★**▲ 90%**](https://www.amazon.com/dp/B0C46XVJ92) [**20x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss**Glasfloss**$35.64**4.7★**▲ 88%**](https://www.amazon.com/dp/B0CB7K1LYK)
**~~View all trending →~~**
## **What buyers say about 16x25x1 fiberglass air filters**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**24%
*“Good price”*
**Size-Overall**19%
*“Good fit Arrived on time”*
**Filtration**18%
*“Great filters and a good price”*
**Quality-Overall**12%
*“Great quality”*
**Advertised Vs Actual Product**8%
*“Was as advertised”*
**Ease Of Use**3%
*“Easy to use”*
**Durability**3%
*“I think they are durable”*
**Spray/Flow**2%
*“Perfect fit and excellent air flow”*
**Ease Of Cleaning**1%
*“came out almost as clean as it went in”*
**Maintenance And Repair**1%
*“Great for regular maintenance”*
### **What buyers complain about **
**Filtration**25%
*“Not the best filters”*
**Size-Overall**15%
*“Size was smaller then stated”*
**Strength**14%
*“Weak and cheaply made”*
**Quality-Overall**10%
*“Poor Quality”*
**Functionality-Overall**3%
*“they don't work”*
**Adhesion/Stickiness**2%
*“3 of them were stuck together from what looks like excess glue or adhesive of some kind”*
**Advertised Vs Actual Product**2%
*“Inaccurate description”*
**Value For Money**2%
*“$1,000 later I wish I had bought these to begin with”*
**Jamming/Clogging**1%
*“clog everything up”*
**Maintenance And Repair**1%
*“constantly fixing it right”*
### **Top return reasons **
**Size-Overall**76%
**Filtration**12%
**Compatibility-Overall**4%
**Value For Money**2%
**Advertised Vs Actual Product**1%
**Defective Material/Parts**1%
**Quality-Overall**1%
**Material Quality**0%
**Functionality-Overall**0%
**Strength**0%
## **Common questions**
- **Is 16x25x1 fiberglass air filters profitable to sell on Amazon United States?**
- The niche generates $77K/yr across 23 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.5%. Flapen's verdict: Skip it (39/100).
- **How competitive is the 16x25x1 fiberglass air filters niche?**
- 5 brands and 19 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in 16x25x1 fiberglass air filters?**
- Top complaints mined from reviews: Filtration, Size-Overall, Strength. The return rate is 0.7%.
- **What does it cost to enter the 16x25x1 fiberglass air filters niche?**
- Listings span $29.68–$77.52; the average listing price is $49.41 (sweet spot $15–$100). The average incumbent carries 4,574 reviews — the moat a new listing must climb.
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