Skip to content

Under Sink Water Filter

Fail

The top 5 brands take 95% of clicks, so Under Sink Water Filter is a Fail.

Flapen Score
38
38 / 100
Ranks 1,956 of 2,225 DIY & Tools niches · −11 vs the category median of 49
Market size
£196K/yr143K searches / yr
90-day growth
-2.1%search demand this quarter
Competition
77%top-5 click share · 7 brands · 14 sellers

Flapen Score

Under Sink Water Filter against its category

The dotted line is the DIY & Tools average. Past it, Under Sink Water 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 Under Sink Water Filter market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Under Sink Water Filter 143K times last year and spent an estimated £196K. The top 5 brands take 95% of clicks. Demand peaks in Jul–Nov. Flapen scores it 38 out of 100, a Fail.

01 · Demand

An estimated 2.4% of those searches ended in a purchase.

Shoppers searched for this 143K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 2.4% of those searches ended in a purchase. Searches in the last 90 days moved -2.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated £196K a year.

Searches, last 12 months
143K
Growth, 90 days vs prior 90
-2.1%
Conversion, latest week
2.4%
Market size, estimated
£196Ka year
Peak month
November2.0× the quietest month
Top search term
under sink water filter52K searches a year

02 · Price

A sale here is worth £56.64.

Listings sell for £56.64 on average, from £10.68 to £130.58. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 100 to 250 of them. At £56.64 that is £6K to £14K a year per listing.

Average price
£56.64inside the $15 to $100 sweet spot
Price range
£10.68–£130.58
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
3K–3K
Units per listing a year
100–250
Revenue per listing a year
£6K–£14K
Returns
1.8%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

75% of listings pay for placement with sponsored ads. 92% ship with Prime. On an average day, 1.5% of listings are out of stock. The average listing ranks #9 within Kitchen & Bath Fixtures. It carries 4,558 reviews at 4.46 stars, so a new listing needs social proof before a better product.

Sponsored listings
75%
Prime listings
92%
Out of stock, average day
1.5%
Average rank
#9in Kitchen & Bath Fixtures
Average rating
4.46 starsAmazon United Kingdom average 4.36 stars
Average reviews
4,558per listing
Listings tracked
12

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 62 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
62 months

Products

Top Under Sink Water Filter products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 22, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 77% of clicks. A locked shelf that new listings rarely crack.

£0£20K£39K£59K£78K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 falling

Sellers

14

Est. top-5 brand share

95%

Top 20: 100%

Est. top-5 click share

77%

Top 20: 100%

Open market

2%

  • Waterdrop73%
  • Water210%
  • AQUA CREST6%
  • Finest-Filters4%
  • Finerfilters3%
  • GOLDEN ICEPURE3%
  • Open — no brand owns it (1 brand, 2%)

Demand

Under Sink Water Filter search demand

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

9K7KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jul, Nov · busiest ÷ quietest = 2.0×

Search terms

Top Under Sink Water Filter search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • under sink water filter52K/yr
  • inline water filter17K/yr
  • under sink water filters12K/yr
  • water filter under sink12K/yr
  • undersink water filter system8K/yr
  • under sink water filter system9K/yr
  • in line water filter5K/yr
  • under sink filter5K/yr
  • under-sink filters5K/yr
  • waterdrop under sink filter3K/yr

Reviews and returns

What reviews say buyers love and hate about Under Sink Water Filter

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

21%of positive reviews mention “Filtration”
20%of negative reviews mention “Filtration”
1.8%of orders come back
“Was a little sceptical with these type of filters”
A buyer, on “Filtration”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.

15 topics

NegativePositive

FAQ

Common Under Sink Water Filter questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data