---
title: "Pool Filter Cartridges — £17K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/pool-filter-cartridges"
last_updated: "2026-08-01T01:29:17.842Z"
locale: en
meta:
description: "Niche score 59/100 · £17K/yr market · 14K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 59/100 · £17K/yr market · 14K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Pool Filter Cartridges — £17K/yr Amazon UK Niche (2026) - Flapen"
---
# **pool filter cartridges**
**Worth a look**
Shows demand growing >1,000% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 4Growth 100Conversion 87Competition 41Returns 96Price range 27Avg price 52Brand share 59Review moat 35Quality gap 75
**Growth**
**Incredible****>1,000%**
90-day search growth — must beat 0% to launch
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Good****£12.19**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****61%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****2,972.8**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****£5.79–£18.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****£17K**
£17K/yr · 14K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=uk&signal=trending "Search growth > 100% (90d)") [** Out of Stock**](https://flapen.com/research/niches?market=uk&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United Kingdom niche tracking, pool filter cartridges is a £17K/yr Amazon United Kingdom market (14K searches/yr). The top 5 brands hold 69% of demand. Verdict: Worth a look — 59/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pool filter cartridges market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **£18K–£24K**
- units × avg price
- **Conversion rate**
- **10.0%**
- **Avg BSR**
- **#111**
- **Page quality**
- **0%**
- **Prime**
- **80%**
- **Sponsored**
- **90%**
- **Out of stock**
- **14.3%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**49**
**Top-5 brand share**
**69%**
Top 20: 100%
**Top-5 click share**
**61%**
Top 20: 100%
**Open market**
**25%**
- Bestway28% - Mallez17% - SUDS-ONLINE9% - Mscomft8% - Hycago6% - Keleily6%
## **Demand**
Weekly Amazon search volume, last 42 weeks — >1,000% search growth over the last 90 days.
10K6KPrime Day '25Spike '25Spike '26Prime Day '26Jun '25Aug '25Oct '25Feb '26Apr '26Jun '26
[**Open Trend **](https://flapen.com/research/uk/home-garden/pool-filter-cartridges/trend)
## **Top pool filter cartridges search terms**
- **bestway pool filter type 1**5K/yr>1,000%14.0% conv. - **avenli pool filter cartridge**4K/yr>1,000%4.6% conv. - **bestway type 1 filter**3K/yr>1,000%16.2% conv. - **type 1 filter cartridge**2K/yr>1,000%15.0% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/pool-filter-cartridges/search-terms)
## **Top pool filter cartridges products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£2K20%£3K30%£5K40%£7K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Bestway | Pool Filter Cartridge Type I 2 Pack Cartridges Filter for Cleaner and Healthier Pool Water Replacement Filter for Hot Tubs and Pools**Bestway**£6.23**4.5★28,312 rev](https://www.amazon.co.uk/dp/B0CDXSGFRV) [2**Mallez Type I Filter Cartridge for Bestway Swimming Pool Replacement Filter Cartridge for Inflatable Swimming Pool 3.1 x 3.5 Inch Pack of 4**Mallez**£13.94**4.3★82 rev](https://www.amazon.co.uk/dp/B0F8J7XHGH) [3**SUDS-ONLINE For Bestway Size I Filter Cartridge for Pools for Bestway Swimming Pool Easy Set Filter Cartridge Replacement for size 1 (2 white)**SUDS-ONLINE**£8.90**4.4★86 rev](https://www.amazon.co.uk/dp/B09NYHXXXS) [4**Bestway 58093-17 Size I Filter Cartridge for Pools Blue/white 3.1 x 3.5 Inch Twin Pack**Bestway**£8.19**4.5★28,312 rev](https://www.amazon.co.uk/dp/B00FQD5TEI) [5**MA 2Pcs Pool Filter Cartridge Replacement Swimming Pool Filter for Bestway Flowclear Size I Filter Cartridge Blue-White 8 x 9 cm**Keleily**£8.87**4.1★135 rev](https://www.amazon.co.uk/dp/B08GFWHZ1Y)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Splosh Compatible With Bestway Size I Filter Cartridges For Pools**Splosh**£10.56**21 rev2mo ago](https://www.amazon.co.uk/dp/B0H2FBKJ2H) [**BDHI Type I Filter Cartridge for Bestway Above Ground Pool Replacement Filter Cartridge for Inflatable Swimming Pool 3.1 x 3.5 Inch 58093-17 Pack of 4**BDHI**£17.00**5 rev3mo ago](https://www.amazon.co.uk/dp/B0GY1XQMTN) [**Size I Filter Cartridge for Bestway Above Ground Pool Replacement Filter Cartridge for Inflatable Swimming Pool 58093-17 3.1 x 3.5 Inch Pack of 4**Atopearl**£16.31**15 rev3mo ago](https://www.amazon.co.uk/dp/B0GXS96JGR) [**Hycago 2PCS Type I Filter Cartridge for Bestway Pool Size 1 (Size I) Hot Tub Filter for Bestway Swimming Pool and Spa Filter Easy installation Pool Cleaning Filter**Hycago**£8.56**14 rev4mo ago](https://www.amazon.co.uk/dp/B0GR9C5GRT) [**Hycago 4PCS Type I Filter Cartridge for Bestway Pool Size 1 48mm Inner Size (Size I) Hot Tub Filter for Bestway Swimming Pool and Spa Filter Easy installation Pool Cleaning Filter**Hycago**£13.06**14 rev4mo ago](https://www.amazon.co.uk/dp/B0GR95MLGL)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**woejgo Pool Filter Type I Filter Cartridges for Size 1 Size I Filter Cartridge for Pools Inflatable Pool Filter Easy Installation 3.06 x 3.52 Inch (4 Pack)**woejgo**£15.26**4.4★**▲ 16%**](https://www.amazon.co.uk/dp/B08ZCV2RF8) [**BDHI Type I Filter Cartridge for Bestway Above Ground Pool Replacement Filter Cartridge for Inflatable Swimming Pool 3.1 x 3.5 Inch 58093-17 Pack of 4**BDHI**£17.00**4.0★**▲ 15%**](https://www.amazon.co.uk/dp/B0GY1XQMTN) [**Aoyern Pool Filters Size 1 Swimming Filter Cartridges 58381 Type I Filter Cartridge for Inflatable Pool Filter. (4PCS)**Aoyern**£15.08**4.3★**▲ 15%**](https://www.amazon.co.uk/dp/B09V372Q8V) [**Size I Filter Cartridge for Bestway Above Ground Pool Replacement Filter Cartridge for Inflatable Swimming Pool 58093-17 3.1 x 3.5 Inch Pack of 4**Atopearl**£16.31**3.8★**▲ 15%**](https://www.amazon.co.uk/dp/B0GXS96JGR) [**Hycago 2PCS Type I Filter Cartridge for Bestway Pool Size 1 (Size I) Hot Tub Filter for Bestway Swimming Pool and Spa Filter Easy installation Pool Cleaning Filter**Hycago**£8.56**4.5★**▲ 15%**](https://www.amazon.co.uk/dp/B0GR9C5GRT)
**~~View all trending →~~**
## **What buyers say about pool filter cartridges**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**24%
*“Fit fine”*
**Value For Money**16%
*“Good value for money”*
**Filtration**16%
*“Good filters”*
**Quality-Overall**9%
*“they appear well made”*
**Advertised Vs Actual Product**9%
*“Awesome just what I wanted”*
**Ease Of Cleaning**7%
*“Easy to clean”*
**Pressure**3%
*“it means I don't have to spend my weekends pressure-washing”*
**Water Resistance**2%
*“Perfect for my 10ft best way pool”*
**Material Quality**2%
*“The materials feel durable and well made, with strong pleats that hold their shape after cleaning”*
**Durability**1%
*“Build/Durability”*
### **What buyers complain about **
**Size-Overall**17%
*“Did not fit”*
**Value For Money**10%
*“there are better value options out there”*
**Quality-Overall**9%
*“These are cheap”*
**Filtration**9%
*“Correct filter terrible delivery by Everi, took ages, kept saying out for delivery,”*
**Jamming/Clogging**5%
*“Don't last too long get clogged very quickly”*
**Ease Of Cleaning**4%
*“need cleaning regularly”*
**Spray/Flow**4%
*“absolutely no flow through these filters”*
**Durability**3%
*“Don't last”*
**Adhesion/Stickiness**2%
*“Not great, become sticky”*
**Smell**1%
*“Slight chemical smell when first unpacked. goes away after rinsing”*
### **Top return reasons **
**Size-Overall**91%
**Filtration**4%
**Advertised Vs Actual Product**3%
**Quality-Overall**1%
**Functionality-Overall**0%
**Value For Money**0%
**Durability**0%
**Touch/Button Controls**0%
**Strength**0%
**Thin**0%
## **Common questions**
- **Is pool filter cartridges profitable to sell on Amazon United Kingdom?**
- The niche generates £17K/yr across 20 tracked products. 4 of 7 products launched in the last 360 days are still selling. 90-day search growth is >1,000%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the pool filter cartridges niche?**
- 16 brands and 49 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in pool filter cartridges?**
- Top complaints mined from reviews: Size-Overall, Value For Money, Quality-Overall. The return rate is 0.8%.
- **What does it cost to enter the pool filter cartridges niche?**
- Listings span £5.79–£18.40; the average listing price is £12.19 (sweet spot $15–$100). The average incumbent carries 2,973 reviews — the moat a new listing must climb.
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