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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

2.4% of searches ended in a purchase last week.

Shoppers searched for this 143K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 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

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

Competition

Competition: brands, sellers & click share

The top 5 products take 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

Top-5 brand share

95%

Top 20: 100%

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 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

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Filtration20%−0.06

Was a little sceptical with these type of filters

tubing that doesn't come with the filter

It turns out the filter does absolutely nothing

Value For Money6%−0.04

can be expensive

Not the cheapest system

I found really expensive

Assembly/Installation6%−0.02

Installation was abit of pain

It was quite difficult to install for me

Its very difficult to put it in and I didnt

Size-Overall5%+1.90

It was a bit fiddly to fit

fit wasnt under 3 minutes actually took 2 hrs due to figments not being correct had to by additional fittings to make it work

it did not fit

Connectivity-Overall5%

found it impossible to disconnect

I had an issue with a connection

After a year the from buying the one of the hose on the quick connect end wear down and was disconnecting

Love

Filtration21%−0.06

Great water filter

Quality filters

Excellent Filter

Assembly/Installation17%−0.02

Easy install

Easy to set up

Very easy to assemble

Quality-Overall13%+1.07

Excellent product

Excellent replacement product, would recommend for value and quality

Solid quality product

Size-Overall13%+1.90

Easy fit

Easy to fit

Fits neatly under the sink

Value For Money8%−0.04

reasonable price

Excellent price

Great value

Return

1.8% Return rate 37% Fixable by listing

Size-Overall32%▇▆▇█▇▇

It was a bit fiddly to fit

fit wasnt under 3 minutes actually took 2 hrs due to figments not being correct had to by additional fittings to make it work

it did not fit

Compatibility-Overall21%▅█▆▆▆▆
Filtration13%▆▅█▅▅▆

Was a little sceptical with these type of filters

tubing that doesn't come with the filter

It turns out the filter does absolutely nothing

Leak-Proof7%▄▇▃▄█▅

Unable to use and both leaked

2nd filter also leaks

I once installed the water pressure dropped then very shortly it started leaking

Assembly/Installation6%█▃▂▄▅▇

Installation was abit of pain

It was quite difficult to install for me

Its very difficult to put it in and I didnt

FAQ

Common Under Sink Water Filter questions

Answered from the same tracked data.