16x25x1 fiberglass air filters
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Price range
Incredible$29.68–$77.52cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$49.41avg listing price — sweet spot $15–$100
Conversion
Okay3.9%search→purchase rate — share of searches ending in a sale
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Review moat
Bad4,573.65avg 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
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad100%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
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.Top 16x25x1 fiberglass air filters search terms
- glasfloss filters10K/yr
- glasfloss air filters7K/yr
- glasfloss5K/yr
- glasfloss air filter6K/yr
- glasfloss industries4K/yr
- 16x25x1 fiberglass furnace filters3K/yr
- 16x25x1 fiberglass air filters3K/yr
- 16x25x1 merv 8 fiberglass furnace filters3K/yr
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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
16x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss
Glasfloss$32.794.7★808 rev
Filtrete 16x25x1 Air Filter 3M MERV 1 HVAC Flat Furnace Filter Replacement 6-Pack (Actual Size 15.98x25x0.98 in)
Filtrete$33.994.4★371 rev
Glasfloss 20x25x1 MERV 10 Pleated AC Furnace Air Filters. Box of 6
Glasfloss$42.734.8★2,728 rev
Glasfloss 16x20x1 MERV 10 Pleated AC Furnace Air Filters. Box of 6
Glasfloss$37.434.8★2,728 rev
Glasfloss 20x25x4 MERV 10 AC Furnace 4 Pleated Air Filters. Box of 3
Glasfloss$50.894.8★2,728 rev
Newest
by launch date
Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Quantity 3.
Glasfloss$77.522 rev
Amazon Basics MERV 5 AC Furnace Air Filter 16x25x1 inches 6-Pack (Actual size: 15.75 x 24.75 x 0.75)
Amazon Basics$29.6817,081 rev
Filtrete 16x25x1 Air Filter 3M MERV 1 HVAC Flat Furnace Filter Replacement 6-Pack (Actual Size 15.98x25x0.98 in)
Filtrete$33.99371 rev
20x20x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss
Glasfloss$32.24808 rev
16x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss
Glasfloss$32.79808 rev
Trending
90-day click momentumGlasfloss 19-7/8x21-1/2x1 MERV 10 Pleated Filters Fits Carrier. 6-Pack
Glasfloss$66.744.8★
Glasfloss 16x20x2 MERV 10 AC Furnace Air Filter. 12 Pack
Glasfloss$72.664.8★
Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Quantity 3.
Glasfloss$77.525.0★
Glasfloss ZL 20x25x4 MERV 10 Fits Honeywell Air Filters. Qty 2
Glasfloss$55.094.8★
20x25x1 Fiberglass Air Filters 6-Pack AC & Furnace Glasfloss
Glasfloss$35.644.7★
What buyers say about 16x25x1 fiberglass air filters
What buyers praise and complain about, mined from review topics.What buyers love
“Good price”
“Good fit Arrived on time”
“Great filters and a good price”
“Great quality”
“Was as advertised”
“Easy to use”
“I think they are durable”
“Perfect fit and excellent air flow”
“came out almost as clean as it went in”
“Great for regular maintenance”
What buyers complain about
“Not the best filters”
“Size was smaller then stated”
“Weak and cheaply made”
“Poor Quality”
“they don't work”
“3 of them were stuck together from what looks like excess glue or adhesive of some kind”
“Inaccurate description”
“$1,000 later I wish I had bought these to begin with”
“clog everything up”
“constantly fixing it right”
Top return reasons
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.