---
title: "Leveluk K8 Filter Replacement — $18K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/leveluk-k8-filter-replacement"
last_updated: "2026-08-09T02:47:49.155Z"
locale: en
meta:
description: "Niche score 31/100 · $18K/yr market · 3K searches/yr · $105.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 31/100 · $18K/yr market · 3K searches/yr · $105.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Leveluk K8 Filter Replacement — $18K/yr Amazon US Niche (2026) - Flapen"
---
# **leveluk k8 filter replacement**
**Skip it**
Soft demand (-53.4% this quarter) — this niche doesn't clear our bar today.
Market size 5Growth 0Conversion 58Competition 11Returns 22Price range 47Avg price 73Brand share 31Review moat 96Quality gap 70
**Review moat**
**Incredible****82.83**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****$105.31**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.0%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Okay****$58.46–$146.50**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Returns**
**Bad****5.9%**
return rate — above 5% kills the launch gate
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$18K**
$18K/yr · 3K searches
**Growth**
**Bad****-53.4%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, leveluk k8 filter replacement is a $18K/yr Amazon United States market (3K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jan–Feb–Sep. Verdict: Skip it — 31/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **leveluk k8 filter replacement market data**
- **Units sold / yr**
- **250–500**
- avg 0–100/product
- **Revenue / yr**
- **$26K–$53K**
- units × avg price
- **Conversion rate**
- **5.0%**
- **Avg BSR**
- **#470**
- **Page quality**
- **0%**
- **Prime**
- **83%**
- **Sponsored**
- **50%**
- **Out of stock**
- **28.3%**
- **Avg brand age**
- **18 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**14**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**0%**
- COOLVIVA19% - FAIR KANPAI19% - Enagic19% - Saillong16% - PERCOLA15% - Zomixzo14%
## **Demand & seasonality**
Weekly Amazon search volume, last 82 weeks — -53.4% search growth over the last 90 days.
225175Spike '25Holiday '25Spike '26Prime Day '26 seasonJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Jan, Feb, Sep · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/leveluk-k8-filter-replacement/trend)
## **Top leveluk k8 filter replacement 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%5%$91810%$2K15%$3K20%$4K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Water Filter Replacement Kit by COOLVIVA. FC1 Replaces Enagic Leveluk F8 and HG-N Filters on K8 SD501 JRIV Machine. Features One FC1 Water Filter Two Cleaning Powders and a Reminder**COOLVIVA**$135.91**4.3★54 rev](https://www.amazon.com/dp/B0CP9V7PJM) [2**F8 filter K-8 water purifier machine with 2 packs of cleaning powder by FAIR KANPAI**FAIR KANPAI**$140.84**4.4★22 rev](https://www.amazon.com/dp/B0DKMP2576) [3**Enagic Kangen Water Filter - Genuine Enagic F8**Enagic**$146.50**4.3★321 rev](https://www.amazon.com/dp/B07NK3R9QJ) [4**Saillong 1 Pack F8 Filter Replacement Cartridge Compatible with HG-N Type Water Ionizer Compatible with Enagic Kangen LeveLuk SD501 JrIV K8 (Not Original Type Before 2010)**Saillong**$74.43**4.0★18 rev](https://www.amazon.com/dp/B0GCMCNWRX) [5**PERCOLA FC1 F8 HG-N Water Filter 1-Pack**PERCOLA**$75.71**4.0★75 rev](https://www.amazon.com/dp/B0FFMY5THK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HG-N FC1 F8 Water Filter Replacement Compatible with Enagic Leveluk F8 and HG-N Filters for K8 and SD501 (2011+) JRIV Machine Machines 1 Pack**Zomixzo**$58.46**7 rev3mo ago](https://www.amazon.com/dp/B0GX1P9NRP) [**Saillong 1 Pack F8 Filter Replacement Cartridge Compatible with HG-N Type Water Ionizer Compatible with Enagic Kangen LeveLuk SD501 JrIV K8 (Not Original Type Before 2010)**Saillong**$74.43**18 rev7mo ago](https://www.amazon.com/dp/B0GCMCNWRX) [**PERCOLA FC1 F8 HG-N Water Filter 1-Pack**PERCOLA**$75.71**75 rev1y ago](https://www.amazon.com/dp/B0FFMY5THK) [**F8 filter K-8 water purifier machine with 2 packs of cleaning powder by FAIR KANPAI**FAIR KANPAI**$140.84**22 rev1y ago](https://www.amazon.com/dp/B0DKMP2576) [**Water Filter Replacement Kit by COOLVIVA. FC1 Replaces Enagic Leveluk F8 and HG-N Filters on K8 SD501 JRIV Machine. Features One FC1 Water Filter Two Cleaning Powders and a Reminder**COOLVIVA**$135.91**54 rev2y ago](https://www.amazon.com/dp/B0CP9V7PJM)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HG-N FC1 F8 Water Filter Replacement Compatible with Enagic Leveluk F8 and HG-N Filters for K8 and SD501 (2011+) JRIV Machine Machines 1 Pack**Zomixzo**$58.46**5.0★**▲ 694%**](https://www.amazon.com/dp/B0GX1P9NRP) [**Saillong 1 Pack F8 Filter Replacement Cartridge Compatible with HG-N Type Water Ionizer Compatible with Enagic Kangen LeveLuk SD501 JrIV K8 (Not Original Type Before 2010)**Saillong**$74.43**4.0★**▲ 103%**](https://www.amazon.com/dp/B0GCMCNWRX) [**Water Filter Replacement Kit by COOLVIVA. FC1 Replaces Enagic Leveluk F8 and HG-N Filters on K8 SD501 JRIV Machine. Features One FC1 Water Filter Two Cleaning Powders and a Reminder**COOLVIVA**$135.91**4.3★**— 4%**](https://www.amazon.com/dp/B0CP9V7PJM) [**F8 filter K-8 water purifier machine with 2 packs of cleaning powder by FAIR KANPAI**FAIR KANPAI**$140.84**4.4★**— 1%**](https://www.amazon.com/dp/B0DKMP2576) [**PERCOLA FC1 F8 HG-N Water Filter 1-Pack**PERCOLA**$75.71**4.0★**▼ 37%**](https://www.amazon.com/dp/B0FFMY5THK)
**~~View all trending →~~**
## **What buyers say about leveluk k8 filter replacement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**22%
*“Great Filter”*
**Size-Overall**15%
*“Fits perfectly”*
**Quality-Overall**11%
*“The quality is just as good”*
**Value For Money**10%
*“worth it”*
**Assembly/Installation**8%
*“easy to install”*
**Compatibility-Overall**6%
*“very compatible to my kangen ionizer”*
**Leak-Proof**5%
*“It fits perfectly no leakage just as easy to install as the magic brand I would give it a five for everything including value for the money”*
**Efficiency**4%
*“Works well”*
**Ease Of Cleaning**3%
*“Well after all the cleaning”*
**Advertised Vs Actual Product**3%
*“As described”*
### **What buyers complain about **
**Leak-Proof**26%
*“Bad leaking”*
**Filtration**20%
*“Cheap, low quality filter”*
**Value For Money**15%
*“The amount of savings is not worth it”*
**Compatibility-Overall**8%
*“not compatible with Kangen K8”*
**Size-Overall**8%
*“there is a problem withe the fit”*
**Quality-Overall**5%
*“Cheap, low quality filter”*
**Certifications**4%
*“What concerns me is that this one does not have the certification by WQA for the reduction of chlorine”*
**Durability**2%
*“After only one week of use, I noticed that the bottom of my kettle became cloudy, and even my water pitcher became dull and cloudy as well”*
### **Top return reasons **
**Compatibility-Overall**24%
**Filtration**23%
**Size-Overall**17%
**Leak-Proof**14%
**Advertised Vs Actual Product**7%
**Connectivity-Overall**3%
**Value For Money**2%
**Functionality-Overall**2%
**Quality-Overall**2%
**Defective Material/Parts**1%
## **Common questions**
- **Is leveluk k8 filter replacement profitable to sell on Amazon United States?**
- The niche generates $18K/yr across 6 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -53.4%. Flapen's verdict: Skip it (31/100).
- **How competitive is the leveluk k8 filter replacement niche?**
- 6 brands and 14 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in leveluk k8 filter replacement?**
- Top complaints mined from reviews: Leak-Proof, Filtration, Value For Money. The return rate is 5.9% — above our launch gate.
- **When does demand for leveluk k8 filter replacement peak?**
- Demand peaks in Jan–Feb–Sep; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the leveluk k8 filter replacement niche?**
- Listings span $58.46–$146.50; the average listing price is $105.31 (sweet spot $15–$100). The average incumbent carries 83 reviews — the moat a new listing must climb.
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