pool filter cartridges
Worth a lookShows demand growing >1,000% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible>1,000%90-day search growth — must beat 0% to launch
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Conversion
Great10.0%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Brand share
Good69%top-5 brand share — brands hold most of the demand
Avg price
Good£12.19avg listing price — sweet spot $15–$100
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,972.8avg incumbent reviews — the moat a new listing must climb
Price range
Okay£5.79–£18.40cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad£17K£17K/yr · 14K searches
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
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.Top pool filter cartridges search terms
- bestway pool filter type 15K/yr
- avenli pool filter cartridge4K/yr
- bestway type 1 filter3K/yr
- type 1 filter cartridge2K/yr
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.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Bestway | Pool Filter Cartridge Type I 2 Pack Cartridges Filter for Cleaner and Healthier Pool Water Replacement Filter for Hot Tubs and Pools
Bestway£6.234.5★28,312 rev
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£13.944.3★82 rev
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£8.904.4★86 rev
Bestway 58093-17 Size I Filter Cartridge for Pools Blue/white 3.1 x 3.5 Inch Twin Pack
Bestway£8.194.5★28,312 rev
MA 2Pcs Pool Filter Cartridge Replacement Swimming Pool Filter for Bestway Flowclear Size I Filter Cartridge Blue-White 8 x 9 cm
Keleily£8.874.1★135 rev
Newest
by launch date
Splosh Compatible With Bestway Size I Filter Cartridges For Pools
Splosh£10.5621 rev
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£17.005 rev
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£16.3115 rev
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£8.5614 rev
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£13.0614 rev
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£15.264.4★
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£17.004.0★
Aoyern Pool Filters Size 1 Swimming Filter Cartridges 58381 Type I Filter Cartridge for Inflatable Pool Filter. (4PCS)
Aoyern£15.084.3★
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£16.313.8★
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£8.564.5★
What buyers say about pool filter cartridges
What buyers praise and complain about, mined from review topics.What buyers love
“Fit fine”
“Good value for money”
“Good filters”
“they appear well made”
“Awesome just what I wanted”
“Easy to clean”
“it means I don't have to spend my weekends pressure-washing”
“Perfect for my 10ft best way pool”
“The materials feel durable and well made, with strong pleats that hold their shape after cleaning”
“Build/Durability”
What buyers complain about
“Did not fit”
“there are better value options out there”
“These are cheap”
“Correct filter terrible delivery by Everi, took ages, kept saying out for delivery,”
“Don't last too long get clogged very quickly”
“need cleaning regularly”
“absolutely no flow through these filters”
“Don't last”
“Not great, become sticky”
“Slight chemical smell when first unpacked. goes away after rinsing”
Top return reasons
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.