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17.5x21x1 Air Filter

Fail

The top 5 brands take 97% of clicks, so 17.5x21x1 Air Filter is a Fail.

Flapen Score
42
42 / 100
Ranks 6,968 of 9,536 Tools & Home Improvement niches · −6 vs the category median of 48
Market size
$31K/yr8K searches / yr
90-day growth
+24.4%search demand this quarter
Competition
91%top-5 click share · 6 brands · 14 sellers

Flapen Score

17.5x21x1 Air Filter against its category

The dotted line is the Tools & Home Improvement average. Past it, 17.5x21x1 Air Filter is stronger. Inside it, weaker.

42Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 17.5x21x1 Air Filter market on Amazon at a glance

Shoppers on Amazon United States searched for 17.5x21x1 Air Filter 8K times last year and spent an estimated $31K. The top 5 brands take 97% of clicks. Flapen scores it 42 out of 100, a Fail.

01 · Demand

7.5% of searches ended in a purchase last week.

Shoppers searched for this 8K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. In the latest week, 7.5% of those searches ended in a purchase. Searches in the last 90 days moved +24.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $31K a year.

Searches, last 12 months
8K
Growth, 90 days vs prior 90
+24.4%
Conversion, latest week
7.5%
Market size, estimated
$31Ka year
Top search term
17.5x21x1 air filter5K searches a year

02 · Price

A sale here is worth $49.40.

Listings sell for $49.40 on average, from $38.40 to $75.13. Amazon reports units sold in ranges. This niche sold 750 to 1K a year. The average listing sells 100 to 250 of them. At $49.40 that is $5K to $12K a year per listing.

Average price
$49.40inside the $15 to $100 sweet spot
Price range
$38.40–$75.13
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
750–1K
Units per listing a year
100–250
Revenue per listing a year
$5K–$12K
Returns
0.7%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

38% of listings pay for placement with sponsored ads. 38% ship with Prime. On an average day, 3.4% of listings are out of stock. The average listing ranks #581 within Furnace Parts & Accessories. It carries 2,359 reviews at 4.67 stars, so a new listing needs social proof before a better product.

Sponsored listings
38%
Prime listings
38%
Out of stock, average day
3.4%
Average rank
#581in Furnace Parts & Accessories
Average rating
4.67 starsAmazon United States average 4.42 stars
Average reviews
2,359per listing
Listings tracked
8

04 · Newcomers

Amazon counts 0 of last year's 2 launches as successful.

2 products launched here in the last 12 months. Amazon counts 0 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 73 months on average, so the names here are established.

Launched, last 12 months
2
Successful launches
0Amazon's first-year sales bar
Average brand age
73 months

Products

Top 17.5x21x1 Air Filter products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 91% of clicks. A locked shelf that new listings rarely crack.

$0$5K$9K$14K$18K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

6 flat

Sellers

14

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

91%

Top 20: 100%

Open market

0%

  • Filter King51%
  • SpiroPure22%
  • Filtrete10%
  • WholesaleHVACDirect10%
  • QCYZTL4%
  • Glasfloss3%
  • Open — no brand owns it (0%)

Reviews and returns

What reviews say buyers love and hate about 17.5x21x1 Air Filter

We read the reviews and the return reasons for every product selling here.

38%of positive reviews mention “Size-Overall”
100%of negative reviews mention “Filtration”
0.7%of orders come back
“If it's not doing it's job, it's you, not the filter”
A buyer, on “Filtration”100% of negative reviews mention the same topic

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.

9 topics

NegativePositive

FAQ

Common 17.5x21x1 Air Filter questions

Answered from the same tracked data.