---
title: "Hot Tub Filter — £897K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/hot-tub-filter"
last_updated: "2026-08-01T05:59:40.820Z"
locale: en
meta:
description: "Niche score 67/100 · £897K/yr market · 364K searches/yr · £15.49 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 67/100 · £897K/yr market · 364K searches/yr · £15.49 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Hot Tub Filter — £897K/yr Amazon UK Niche (2026) - Flapen"
---
# **hot tub filter**
**Launch it**
A $897K/yr market growing +307.8% this quarter with returns at 0.2% — clears our launch bar.
Market size 76Growth 100Conversion 97Competition 35Returns 99Price range 59Avg price 76Brand share 46Review moat 43Quality gap 27
**Growth**
**Incredible****+307.8%**
90-day search growth — must beat 0% to launch
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****15.9%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****£897K**
£897K/yr · 364K searches
**Avg price**
**Great****£15.49**
avg listing price — sweet spot $15–$100
**Price range**
**Good****£4.48–£30.30**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,184.23**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Signals**[** Trending**](https://flapen.com/research/niches?market=uk&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United Kingdom niche tracking, hot tub filter is a £897K/yr Amazon United Kingdom market (364K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Launch it — 67/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **hot tub filter market data**
- **Units sold / yr**
- **50K–60K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£775K–£929K**
- units × avg price
- **Conversion rate**
- **15.9%**
- **Avg BSR**
- **#27**
- **Page quality**
- **0%**
- **Prime**
- **82%**
- **Sponsored**
- **86%**
- **Out of stock**
- **1.3%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▼falling
**Sellers**
**46**
**Top-5 brand share**
**78%**
Top 20: 100%
**Top-5 click share**
**64%**
Top 20: 98%
**Open market**
**18%**
- Mallez21% - Finest-Filters19% - POOLPURE19% - Bestway15% - TOREAD4% - AQUALTRA4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +307.8% search growth over the last 90 days.
23K18KSpike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 8.6×
[**Open Trend **](https://flapen.com/research/uk/home-garden/hot-tub-filter/trend)
## **Top hot tub filter search terms**
- **lazy spa filter**94K/yr+558.3%15.6% conv. - **hot tub filter**109K/yr+166.4%7.8% conv. - **lay z spa filter**33K/yr+468.6%14.4% conv. - **hot tub filters**30K/yr+224.8%8.0% conv. - **lazy spa filters**14K/yr+587.7%12.8% conv. - **lazy spa filters for hot tub**15K/yr+277.4%14.9% conv. - **spa filters for hot tubs**13K/yr+280.5%8.6% conv. - **hot tub filters replacements**8K/yr+226.1%6.2% conv. - **layzspa filter**8K/yr+432.1%16.8% conv. - **lay z spa filters**6K/yr+536.2%10.3% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/hot-tub-filter/search-terms)
## **Top hot tub filter 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%£90K20%£179K30%£269K40%£359K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Mallez Hot Tub Filter Replacement Filter Cartridge for Bestway Filter Size VI for All Lay-Z-Spa Models - Paris Miami Vegas Monaco Palm Spring Cancun Helsinki etc.**Mallez**£7.26**4.5★1,052 rev](https://www.amazon.co.uk/dp/B091J1RNWG) [2**Finest-Filters Hot Tub Spa Water Filter Cartridges Compatible For Lay-Z-Spa SaluSpa 90352E Intex Type VI Bestway (6 Pack of Replacement Hot Tub Water Filter Cartridges)**Finest-Filters**£13.27**4.6★360 rev](https://www.amazon.co.uk/dp/B0BVWMVYFJ) [3**POOLPURE Type VI Filter Replacement Bestway Filter Cartridge for Lay-Z-Spa Miami Vegas Palm Springs Paris Monaco Coleman SaluSpa 90352E Dimensions: 10.5 cm × 7.9 cm (6PC)**POOLPURE**£14.48**4.7★4,544 rev](https://www.amazon.co.uk/dp/B09N77SW5S) [4**Lay-Z-Spa Hot Tub Filter Cartridge VI for All Lay-Z-Spa Models - 1 x Twin Pack (2 Filters)**Bestway**£4.48**4.7★5,164 rev](https://www.amazon.co.uk/dp/B08CCXV3WD) [5**Bestway Filter Cartridge VI for Lay-Z-Spa White and Blue Pack of 6**Bestway**£27.56**4.7★20,821 rev](https://www.amazon.co.uk/dp/B00AWP6X1I)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Hycago 4PCS Hot Tub Filter Type for Ly-z-spa All Models - Paris Miami Vegas Monaco Palm Spring Cancun Helsinki Size 6 Replacement Filter Cartridge for Bestway Filter Size VI**Hycago**£9.85**26 rev4mo ago](https://www.amazon.co.uk/dp/B0GR98NHLV) [**Hycago 6PCS Hot Tub Filter Type for Ly-z-spa All Models - Paris Miami Vegas Monaco Palm Spring Cancun Helsinki Size 6 Replacement Filter Cartridge for Bestway Filter Size VI**Hycago**£12.80**26 rev4mo ago](https://www.amazon.co.uk/dp/B0GR95F69G) [**KGC 6CH-940 Hot Tub Filter Hot Tub Filters for Pleatco PWW50P3 (1 1/2 SAE Coarse Thread) Unicel 6CH-940 Filbur FC-0359 Waterway 817-0050 03FIL1400 25252-for Viking lazy spa filter 2 Pack**KGC**£21.98**288 rev7mo ago](https://www.amazon.co.uk/dp/B0G4MNYKTF) [**ZENO Hot Tub Filter 3 Pack | Spa Filters for Hot Tub | Replacement Filters for Lazy Spa | Water Filter Cartridges Compatible For Lay-Z-Spa SaluSpa 90352E Intex Type VI Bestway**ZENO**£7.89**35 rev10mo ago](https://www.amazon.co.uk/dp/B0FQJXNJHP) [**AQUALTRA VI Filters Compatible with Lay-Z Spa 90352E 58323E 58323 90427E Hot Tub Filters 6 Pack**AQUALTRA**£12.93**99 rev1y ago](https://www.amazon.co.uk/dp/B0DM5WQS4X)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Hycago 4PCS Hot Tub Filter Type for Ly-z-spa All Models - Paris Miami Vegas Monaco Palm Spring Cancun Helsinki Size 6 Replacement Filter Cartridge for Bestway Filter Size VI**Hycago**£9.85**4.6★**▲ 70%**](https://www.amazon.co.uk/dp/B0GR98NHLV) [**Hycago 6PCS Hot Tub Filter Type for Ly-z-spa All Models - Paris Miami Vegas Monaco Palm Spring Cancun Helsinki Size 6 Replacement Filter Cartridge for Bestway Filter Size VI**Hycago**£12.80**4.6★**▲ 69%**](https://www.amazon.co.uk/dp/B0GR95F69G) [**SUDS-ONLINE Compatible With All Lay-Z-Spa Models Bestway Filter Cartridge VI Replacement FOR Miami Vegas Monaco Palm Springs 1 x Twin Pack**SUDS-ONLINE**£7.45**4.6★**▲ 44%**](https://www.amazon.co.uk/dp/B09JWXBCY9) [**Finest-Filters Hot Tub Spa Water Filter Cartridges Compatible For Lay-Z-Spa SaluSpa 90352E Intex Type VI Bestway (6 Pack of Replacement Hot Tub Water Filter Cartridges)**Finest-Filters**£13.27**4.6★**▲ 41%**](https://www.amazon.co.uk/dp/B0BVWMVYFJ) [**KGC 6CH-940 Hot Tub Filter Hot Tub Filters for Pleatco PWW50P3 (1 1/2 SAE Coarse Thread) Unicel 6CH-940 Filbur FC-0359 Waterway 817-0050 03FIL1400 25252-for Viking lazy spa filter 2 Pack**KGC**£21.98**4.6★**▲ 33%**](https://www.amazon.co.uk/dp/B0G4MNYKTF)
**~~View all trending →~~**
## **What buyers say about hot tub filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**27%
*“Excellent price”*
**Quality-Overall**22%
*“Excellent product”*
**Filtration**19%
*“Filter works”*
**Size-Overall**12%
*“Fits perfectly”*
**Advertised Vs Actual Product**10%
*“Does the job well”*
**Durability**4%
*“Quality is excellent and durability is great too; they keep their shape well and stand up perfectly to regular use and chemicals”*
**Ease Of Cleaning**1%
*“easy to clean”*
**Efficiency**1%
*“They work well with Canadian Spa”*
**Water Resistance**1%
*“Clear Water”*
**Recycle/Reuse**1%
*“They can be cleaned and reused, if you use a suitable filter cleaner - I regularly reorder these”*
### **What buyers complain about **
**Size-Overall**38%
*“A smidgen too small = big problems later”*
**Filtration**28%
*“Rubbish filter”*
**Quality-Overall**10%
*“Trash”*
**Material Quality**3%
*“They feel and look a cheaper filter paper material and have less folds/riffles than the previous orders”*
**Durability**3%
*“they do not last as long”*
**Color**3%
*“turned a slimy greeny blue”*
**Ease Of Use**2%
*“it takes a lot of effort”*
**Ease Of Cleaning**2%
*“I have tried to wash them out but still makes no difference”*
**Jamming/Clogging**2%
*“This is most concerning for hairs, that can easily clog up impellers and valves and cause irreparable damage to the pump system”*
### **Top return reasons **
**Size-Overall**78%
**Filtration**10%
**Compatibility-Overall**4%
**Advertised Vs Actual Product**2%
**Quality-Overall**1%
**Functionality-Overall**1%
**Defective Material/Parts**1%
**Add-Ons/Attachments**0%
**Color**0%
**Value For Money**0%
## **Common questions**
- **Is hot tub filter profitable to sell on Amazon United Kingdom?**
- The niche generates £897K/yr across 22 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +307.8%. Flapen's verdict: Launch it (67/100).
- **How competitive is the hot tub filter niche?**
- 14 brands and 46 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in hot tub filter?**
- Top complaints mined from reviews: Size-Overall, Filtration, Quality-Overall. The return rate is 0.2%.
- **When does demand for hot tub filter peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 8.6× the quietest.
- **What does it cost to enter the hot tub filter niche?**
- Listings span £4.48–£30.30; the average listing price is £15.49 (sweet spot $15–$100). The average incumbent carries 2,184 reviews — the moat a new listing must climb.
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