---
title: "Phox Water Filter Refill — £259K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/phox-water-filter-refill"
last_updated: "2026-07-31T16:14:30.016Z"
locale: en
meta:
description: "Niche score 52/100 · £259K/yr market · 94K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £259K/yr market · 94K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Phox Water Filter Refill — £259K/yr Amazon UK Niche (2026) - Flapen"
---
# **phox water filter refill**
**Worth a look**
Shows searches that convert (15.6% search→purchase), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Market size 48Growth 18Conversion 97Competition 34Returns 97Price range 72Avg price 82Brand share 9Review moat 62Quality gap 60
**Conversion**
**Incredible****15.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****£17.69**
avg listing price — sweet spot $15–$100
**Price range**
**Good****£8.39–£32.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****1,017.83**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****£259K**
£259K/yr · 94K searches
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-14.3%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
**Signals**[** 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, phox water filter refill is a £259K/yr Amazon United Kingdom market (94K searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **phox water filter refill market data**
- **Units sold / yr**
- **6K–8K**
- avg 500–750/product
- **Revenue / yr**
- **£106K–£142K**
- units × avg price
- **Conversion rate**
- **15.6%**
- **Avg BSR**
- **#139**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **39%**
- **Out of stock**
- **37.8%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **163 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▲rising
**Sellers**
**15**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**2%**
- Phox74% - Hopeas12% - livager6% - Draymora2% - Waterdrop2% - INVIGORATED WATER1% - Open — no brand owns it (2 brands, 2%)
## **Top phox water filter refill search terms**
- **phox water filter refill**44K/yr-4.8%5.5% conv. - **phox water filter**18K/yr-7.1%2.1% conv. - **phox**16K/yr-11.3%2.6% conv. - **phox refill pack**7K/yr-15.8%4.8% conv. - **phox water filter refill alkaline**6K/yr-65.4%3.0% conv. - **phox water**3K/yr-10.0%1.0% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/phox-water-filter-refill/search-terms)
## **Top phox water filter refill 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%£26K20%£52K30%£78K40%£104K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Clean Refill Pack for Phox Water Filters 3 Month Supply (Clean)**Phox**£12.65**4.6★2,827 rev](https://www.amazon.co.uk/dp/B084PC1F53) [2**Phox Refill Pack for Phox Filters - 3 Month Supply (Alkaline)**Phox**£12.68**4.6★2,827 rev](https://www.amazon.co.uk/dp/B084NX9559) [3**Phox Wave 2.8L Water Filter Jug and Refillable Cartridge (Clean) Blue White | 3 Month Supply**Phox**£29.61**4.5★256 rev](https://www.amazon.co.uk/dp/B0BLZKT14F) [4**12pcs Activated Charcoal Water Filters Coconut Shell Chemical-Free Odor Absorbing Carbon Filter Replacements for Distillers (12PCS 3.5 * 7.5CM)**Hopeas**£8.39**4.1★301 rev](https://www.amazon.co.uk/dp/B0FFTQRGS6) [5**Phox Refill Pack for Phox Filters - 3 Month Supply (Softener)**Phox**£12.68**4.6★2,827 rev](https://www.amazon.co.uk/dp/B0CXY1BWHW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Returnabl Refillable Water Filter Cartridge Starter Kit Compatible with Brita Maxtra+ Jugs Includes 3 Refill Pouches (Blue)**Returnabl**£19.97**3 rev2mo ago](https://www.amazon.co.uk/dp/B0GYLTLZB4) [**25 Pack Activated Charcoal Water Filters Coconut Shell Activated Carbon Filter Replacements Chemical-Free Odor Absorbing for Distillers Home Pure Water Remove Compound One Year Supply (5 * 8.5cm)**Draymora**£9.62**8 rev6mo ago](https://www.amazon.co.uk/dp/B0GF2MPWYJ) [**25Pcs Activated Charcoal Water Filters Coconut Shell Chemical-Free Odor Absorbing Carbon Filter Replacements for Home Pure Water Remove Compound Formaldehyde Benzene Ammonia TVOC Musty Odors(5*8.5cm)**livager**£10.04**13 rev10mo ago](https://www.amazon.co.uk/dp/B0FR3J8MNF) [**25Pack Activated Charcoal Water Filters Coconut Shell Activated Carbon Filter Sachets Chemical-Free Odor Absorbing for Home Pure Water Remove Compound(5 * 8.5cm)**livager**£10.11**18 rev10mo ago](https://www.amazon.co.uk/dp/B0FQ4RPCW2) [**12pcs Activated Charcoal Water Filters Coconut Shell Chemical-Free Odor Absorbing Carbon Filter Replacements for Distillers (12PCS 3.5 * 7.5CM)**Hopeas**£8.39**301 rev1y ago](https://www.amazon.co.uk/dp/B0FFTQRGS6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Returnabl Refillable Water Filter Cartridge Starter Kit Compatible with Brita Maxtra+ Jugs Includes 3 Refill Pouches (Blue)**Returnabl**£19.97**5.0★**▲ 333%**](https://www.amazon.co.uk/dp/B0GYLTLZB4) [**12pcs Activated Charcoal Water Filters Coconut Shell Chemical-Free Odor Absorbing Carbon Filter Replacements for Distillers (12PCS 3.5 * 7.5CM)**Hopeas**£8.39**4.1★**▲ 261%**](https://www.amazon.co.uk/dp/B0FFTQRGS6) [**25 Pack Activated Charcoal Water Filters Coconut Shell Activated Carbon Filter Replacements Chemical-Free Odor Absorbing for Distillers Home Pure Water Remove Compound One Year Supply (5 * 8.5cm)**Draymora**£9.62**3.4★**▲ 134%**](https://www.amazon.co.uk/dp/B0GF2MPWYJ) [**Phox Wave 2.8L Water Filter Jug and Refillable Cartridge (Clean) Blue White | 3 Month Supply**Phox**£29.61**4.5★**▲ 110%**](https://www.amazon.co.uk/dp/B0BLZKT14F) [**Waterdrop Instant Electric Water Filter Jug with a 3-Months Filter 3.5L Countertop Water Filter System Reduces Chlorine Lead Mercury Reduce PFAS PFOA/PFOS 757 Litres Blue (NOT Reduce TDS)**Waterdrop**£32.22**4.6★**▲ 94%**](https://www.amazon.co.uk/dp/B0DRG72B3X)
**~~View all trending →~~**
## **What buyers say about phox water filter refill**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**20%
*“Great filter”*
**Quality-Overall**16%
*“A good device”*
**Value For Money**9%
*“Excellent value”*
**Ease Of Use**8%
*“Easy to use”*
**Advertised Vs Actual Product**7%
*“As described”*
**Size-Overall**7%
*“It's the perfect size”*
**Design-Overall**3%
*“Good sturdy design”*
**Assembly/Installation**2%
*“Easy to install and good size”*
**Leak-Proof**2%
*“Does not leak. unlike other makes we have had”*
**Weight Light**1%
*“lift without being too heavy”*
### **What buyers complain about **
**Filtration**19%
*“Not very good filtering”*
**Quality-Overall**12%
*“shoddy quality for the price”*
**Value For Money**7%
*“unfortunately far too expensive for me”*
**Leak-Proof**5%
*“It didnt last long before it started leaking everywhere”*
**Size-Overall**5%
*“Badly fitted lid”*
**Durability**4%
*“Broken within 2 months”*
**Smell**3%
*“No bleach smell in the tap water anymore”*
**Compatibility-Overall**2%
*“Not compatible”*
**Functionality-Overall**2%
*“Do not buy these do not work”*
**Instructions/User Manual/Troubleshooting**2%
*“straight out of the box followed the instructions”*
### **Top return reasons **
**Size-Overall**34%
**Filtration**20%
**Leak-Proof**8%
**Defective Material/Parts**7%
**Functionality-Overall**6%
**Compatibility-Overall**4%
**Advertised Vs Actual Product**3%
**Value For Money**2%
**Color**2%
**Quality-Overall**2%
## **Common questions**
- **Is phox water filter refill profitable to sell on Amazon United Kingdom?**
- The niche generates £259K/yr across 18 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -14.3%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the phox water filter refill niche?**
- 8 brands and 15 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in phox water filter refill?**
- Top complaints mined from reviews: Filtration, Quality-Overall, Value For Money. The return rate is 0.7%.
- **What does it cost to enter the phox water filter refill niche?**
- Listings span £8.39–£32.22; the average listing price is £17.69 (sweet spot $15–$100). The average incumbent carries 1,018 reviews — the moat a new listing must climb.
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