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Aprilaire 400 Replacement Filter

Fail

The top 5 products take 100% of clicks, so Aprilaire 400 Replacement Filter is a Fail.

Flapen Score
38
38 / 100
Ranks 697 of 845 Appliances niches · −7 vs the category median of 45
Market size
$48K/yr6K searches / yr
90-day growth
-42.9%search demand this quarter
Competition
100%top-5 click share · 2 brands · 14 sellers

Flapen Score

Aprilaire 400 Replacement Filter against its category

The dotted line is the Appliances average. Past it, Aprilaire 400 Replacement Filter is stronger. Inside it, weaker.

38Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Aprilaire 400 Replacement Filter market on Amazon at a glance

Shoppers on Amazon United States searched for Aprilaire 400 Replacement Filter 6K times last year and spent an estimated $48K. All 2 brands take every click. Flapen scores it 38 out of 100, a Fail.

01 · Demand

An estimated 19.4% of those searches ended in a purchase.

Shoppers searched for this 6K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 19.4% of those searches ended in a purchase. Searches in the last 90 days moved -42.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated $48K a year.

Searches, last 12 months
6K
Growth, 90 days vs prior 90
-42.9%
Conversion, latest week
19.4%
Market size, estimated
$48Ka year
Top search term
aprilaire 400 replacement filter5K searches a year

02 · Price

A sale here is worth $39.07.

Listings sell for $39.07 on average, from $23.14 to $62.07. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 250 to 500 of them. At $39.07 that is $10K to $20K a year per listing.

Average price
$39.07inside the $15 to $100 sweet spot
Price range
$23.14–$62.07
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
2K–2K
Units per listing a year
250–500
Revenue per listing a year
$10K–$20K
Returns
1.7%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

33% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #78 within Humidifier Parts & Accessories. It carries 620 reviews at 4.47 stars, so a new listing needs social proof before a better product.

Sponsored listings
33%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#78in Humidifier Parts & Accessories
Average rating
4.47 starsAmazon United States average 4.42 stars
Average reviews
620per listing
Listings tracked
3

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 66 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
66 months

Products

Top Aprilaire 400 Replacement Filter products & what they sell for

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

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 100% of clicks. A locked shelf that new listings rarely crack.

Brands

2 falling

Sellers

14

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • Brand 178%
  • Brand 222%

Demand

Aprilaire 400 Replacement Filter search demand

Weekly searches over the year, seasonality beneath. Pick a range.

300200Spike '26Prime Day '26NovDecJanFebMarAprMayJunJulAug

Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 12.7× · 10 of 12 months tracked

Reviews and returns

What reviews say buyers love and hate about Aprilaire 400 Replacement Filter

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

39%of positive reviews mention “Quality-Overall”
20%of negative reviews mention “Defective Material/Parts”
1.7%of orders come back
“There are part to SAVE from old unit”
A buyer, on “Defective Material/Parts”20% 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.

16 topics

NegativePositive

FAQ

Common Aprilaire 400 Replacement Filter questions

Answered from the same tracked data.