16.5 X 21.5 X1 Air Filter
FailThe top 5 products take 100% of clicks, so 16.5 X 21.5 X1 Air Filter is a Fail.
- Flapen Score
- 43 / 100Ranks 6,589 of 9,536 Tools & Home Improvement niches · −5 vs the category median of 4843
- Market size
- $126K/yr19K searches / yr
- 90-day growth
- +27.4%search demand this quarter
- Competition
- 100%top-5 click share · 3 brands · 5 sellers
Flapen Score
16.5 X 21.5 X1 Air Filter against its category
The dotted line is the Tools & Home Improvement average. Past it, 16.5 X 21.5 X1 Air Filter is stronger. Inside it, weaker.
Market
The 16.5 X 21.5 X1 Air Filter market on Amazon at a glance
Shoppers on Amazon United States searched for 16.5 X 21.5 X1 Air Filter 19K times last year and spent an estimated $126K. All 3 brands take every click. Demand peaks in Jan–Feb–Nov. Flapen scores it 43 out of 100, a Fail.
01 · Demand
15.9% of searches ended in a purchase last week.
Shoppers searched for this 19K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. In the latest week, 15.9% of those searches ended in a purchase. Searches in the last 90 days moved +27.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $126K a year.
- Searches, last 12 months
- 19K
- Growth, 90 days vs prior 90
- +27.4%
- Conversion, latest week
- 15.9%
- Market size, estimated
- $126Ka year
- Peak month
- January2.4× the quietest month
- Top search term
- 16.5x21.5x1 air filter12K searches a year
02 · Price
A sale here is worth $41.02.
Listings sell for $41.02 on average, from $33.33 to $54.91. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 250 to 500 of them. At $41.02 that is $10K to $21K a year per listing.
- Average price
- $41.02inside the $15 to $100 sweet spot
- Price range
- $33.33–$54.91
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $10K–$21K
- Returns
- 2.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
80% of listings pay for placement with sponsored ads. 80% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #94 within Furnace Parts & Accessories. It carries 3,366 reviews at 4.66 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 80%
- Prime listings
- 80%
- Out of stock, average day
- 0.0%
- Average rank
- #94in Furnace Parts & Accessories
- Average rating
- 4.66 starsAmazon United States average 4.42 stars
- Average reviews
- 3,366per listing
- Listings tracked
- 5
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 81 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 81 months
Products
Top 16.5 X 21.5 X1 Air Filter products & what they sell for
Every tracked product: its share of the shelf, its reviews, and its price.
Top sellers
by 90-day click share
Aerostar 16.5x21.5x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Lint Mold & Allergy-Causing Pollen
- Price
- $37.93
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago

Filtrete 16.5x21.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 16.19 x 21.19 x 0.81 in)
- Price
- $38.62
- Rating
- 4.7/5
- Reviews
- 6,265
- Age
- 2y ago

Aerostar 16.375x21.5x1 MERV 11 Air Filter 4 Count ACTUAL SIZE (16.50 x 21.50 x 0.75) HVAC Air Conditioning & Furnace Filter for Dust Pet Dander Smoke & Allergies (MPR 1200 / FPR 7) Made in USA
- Price
- $33.33
- Rating
- 4.7/5
- Reviews
- 4,106
- Age
- 6y ago

Filter King 16.5x21.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: : 16.5 x 21.5 x .75)
- Price
- $40.32
- Rating
- 4.7/5
- Reviews
- 1,569
- Age
- 3y ago

Aerostar 16.5x21.5x1 MERV 11 - 6 Count - Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Cold & Flu Germs Lint Mold Pet Dander Allergy-Causing Pollen Smog & Smoke
- Price
- $54.91
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago
Trending
90-day click momentum
Aerostar 16.5x21.5x1 MERV 11 - 6 Count - Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Cold & Flu Germs Lint Mold Pet Dander Allergy-Causing Pollen Smog & Smoke
- Price
- $54.91
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago

Aerostar 16.5x21.5x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Lint Mold & Allergy-Causing Pollen
- Price
- $37.93
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago

Filtrete 16.5x21.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 16.19 x 21.19 x 0.81 in)
- Price
- $38.62
- Rating
- 4.7/5
- Reviews
- 6,265
- Age
- 2y ago

Filter King 16.5x21.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: : 16.5 x 21.5 x .75)
- Price
- $40.32
- Rating
- 4.7/5
- Reviews
- 1,569
- Age
- 3y ago

Aerostar 16.375x21.5x1 MERV 11 Air Filter 4 Count ACTUAL SIZE (16.50 x 21.50 x 0.75) HVAC Air Conditioning & Furnace Filter for Dust Pet Dander Smoke & Allergies (MPR 1200 / FPR 7) Made in USA
- Price
- $33.33
- Rating
- 4.7/5
- Reviews
- 4,106
- Age
- 6y ago
Newest
by launch date
Filtrete 16.5x21.5x1 AC Furnace Air Filter MERV 8 MPR 700 Tough on Pollen Easy on Airflow 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter 4-Pack (Actual Size 16.19 x 21.19 x 0.81 in)
- Price
- $38.62
- Rating
- 4.7/5
- Reviews
- 6,265
- Age
- 2y ago

Filter King 16.5x21.5x1 Air Filter (MERV 8) (4-Pack) Dust & Allergy Control AC Furnace Filters MADE IN USA HVAC Pleated Electrostatic (Actual Size: : 16.5 x 21.5 x .75)
- Price
- $40.32
- Rating
- 4.7/5
- Reviews
- 1,569
- Age
- 3y ago

Aerostar 16.375x21.5x1 MERV 11 Air Filter 4 Count ACTUAL SIZE (16.50 x 21.50 x 0.75) HVAC Air Conditioning & Furnace Filter for Dust Pet Dander Smoke & Allergies (MPR 1200 / FPR 7) Made in USA
- Price
- $33.33
- Rating
- 4.7/5
- Reviews
- 4,106
- Age
- 6y ago

Aerostar 16.5x21.5x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Lint Mold & Allergy-Causing Pollen
- Price
- $37.93
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago

Aerostar 16.5x21.5x1 MERV 11 - 6 Count - Pleated HVAC Furnace & Air Conditioner Filters - Removes Dust Cold & Flu Germs Lint Mold Pet Dander Allergy-Causing Pollen Smog & Smoke
- Price
- $54.91
- Rating
- 4.6/5
- Reviews
- 2,445
- Age
- 10y ago
Competition
Competition: brands, sellers & click share
The top 5 products take 100% of clicks. A locked shelf that new listings rarely crack.
Brands
3 falling
Sellers
5
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Aerostar57%
- Filtrete39%
- Filter King4%
Demand
16.5 X 21.5 X1 Air Filter search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Nov · busiest ÷ quietest = 2.4×
Search terms
Top 16.5 X 21.5 X1 Air Filter search terms shoppers use
The exact words shoppers type, with yearly volume, growth, and conversion.
- 16.5x21.5x1 air filter12K/yr
- 16.5 x 21.5 x 1 air filter4K/yr
- 16 1/2 x 21 1/2 x 1 air filter3K/yr
Reviews and returns
What reviews say buyers love and hate about 16.5 X 21.5 X1 Air Filter
We read the reviews and the return reasons for every product selling here.
“very cheap”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 16.5 X 21.5 X1 Air Filter questions
Answered from the same tracked data.









