---
title: "Ws645a Water Filter Samsung — $114K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/ws645a-water-filter-samsung"
last_updated: "2026-08-09T09:54:44.154Z"
locale: en
meta:
description: "Niche score 40/100 · $114K/yr market · 18K searches/yr · $28.33 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $114K/yr market · 18K searches/yr · $28.33 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ws645a Water Filter Samsung — $114K/yr Amazon US Niche (2026) - Flapen"
---
# **ws645a water filter samsung**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 27Growth 29Conversion 100Competition 3Returns 90Price range 95Avg price 95Brand share 0Review moat 19Quality gap 20
**Conversion**
**Incredible****22.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$28.33**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$20.75–$37.98**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Growth**
**Okay****+3.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****$114K**
$114K/yr · 18K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****15,053.83**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****96%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, ws645a water filter samsung is a $114K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 40/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ws645a water filter samsung market data**
- **Units sold / yr**
- **4K–5K**
- avg 750–1,000/product
- **Revenue / yr**
- **$113K–$142K**
- units × avg price
- **Conversion rate**
- **22.0%**
- **Avg BSR**
- **#33**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**18**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**96%**
Top 20: 100%
**Open market**
**0%**
- Waterspecialist71% - ICEPURE13% - Samsung6% - SETFEEL6% - AQUA CREST4%
## **Demand & seasonality**
Weekly Amazon search volume, last 99 weeks — +3.5% search growth over the last 90 days.
500300Spike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/appliances/ws645a-water-filter-samsung/trend)
## **Top ws645a water filter samsung search terms**
- **ws645a water filter samsung**10K/yr+2.5%26.4% conv. - **samsung rf27t5201sg water filter replacement**4K/yr+3.8%7.7% conv. - **samsung rs27t5200sr water filter replacement**2K/yr+9.8%14.1% conv. - **ws645a water filter**2K/yr+1.6%27.1% conv. [**All search terms **](https://flapen.com/research/us/appliances/ws645a-water-filter-samsung/search-terms)
## **Top ws645a water filter samsung 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%20%$23K40%$46K60%$68K80%$91K1001K10K100K 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**Waterspecialist WS645A Refrigerator Water Filter 3 Pack**Waterspecialist**$27.23**4.7★17,011 rev](https://www.amazon.com/dp/B07KP6X4YK) [2**ICEPURE Water Filter Replacement for Samsung DA97-17376B HAF-QIN/EXP 3 Pack**ICEPURE**$24.52**4.6★8,156 rev](https://www.amazon.com/dp/B07QS22G94) [3**Samsung HAF-QIN/EXP Genuine Refrigerator Water Filter Reduces 99% of Harmful Contaminants for Clean Clear Drinking Water 6-Month Life Easy Install Pack of 1**Samsung**$35.32**4.7★43,372 rev](https://www.amazon.com/dp/B071NFVVNG) [4**DA97-17376B Water Filter Replacement for Samsung Refrigerator Rs27t5200sr Rs22t5201sr rf28r7201sr Rf27t5201sr Rf29a9671sr Haf-qin/exp rf27t5241sr rf28t5001sr rf27t5201sg rf28r7351sr 2 Pack**SETFEEL**$20.75**4.7★855 rev](https://www.amazon.com/dp/B0D4V3SS2L) [5**Waterspecialist WS645A Refrigerator Water Filter 4 Pack**Waterspecialist**$37.98**4.7★17,011 rev](https://www.amazon.com/dp/B0791F7PKR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**DA97-17376B Water Filter Replacement for Samsung Refrigerator Rs27t5200sr Rs22t5201sr rf28r7201sr Rf27t5201sr Rf29a9671sr Haf-qin/exp rf27t5241sr rf28t5001sr rf27t5201sg rf28r7351sr 2 Pack**SETFEEL**$20.75**855 rev2y ago](https://www.amazon.com/dp/B0D4V3SS2L) [**ICEPURE Water Filter Replacement for Samsung DA97-17376B HAF-QIN/EXP 3 Pack**ICEPURE**$24.52**8,156 rev7y ago](https://www.amazon.com/dp/B07QS22G94) [**Waterspecialist WS645A Refrigerator Water Filter 3 Pack**Waterspecialist**$27.23**17,011 rev7y ago](https://www.amazon.com/dp/B07KP6X4YK) [**AQUA CREST AQF-FF45 Refrigerator Water Filter 3 Pack**AQUA CREST**$24.20**3,918 rev7y ago](https://www.amazon.com/dp/B07HSXYL3Q) [**Waterspecialist WS645A Refrigerator Water Filter 4 Pack**Waterspecialist**$37.98**17,011 rev8y ago](https://www.amazon.com/dp/B0791F7PKR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**AQUA CREST AQF-FF45 Refrigerator Water Filter 3 Pack**AQUA CREST**$24.20**4.7★**▲ 195%**](https://www.amazon.com/dp/B07HSXYL3Q) [**ICEPURE Water Filter Replacement for Samsung DA97-17376B HAF-QIN/EXP 3 Pack**ICEPURE**$24.52**4.6★**▲ 31%**](https://www.amazon.com/dp/B07QS22G94) [**DA97-17376B Water Filter Replacement for Samsung Refrigerator Rs27t5200sr Rs22t5201sr rf28r7201sr Rf27t5201sr Rf29a9671sr Haf-qin/exp rf27t5241sr rf28t5001sr rf27t5201sg rf28r7351sr 2 Pack**SETFEEL**$20.75**4.7★**▲ 29%**](https://www.amazon.com/dp/B0D4V3SS2L) [**Waterspecialist WS645A Refrigerator Water Filter 4 Pack**Waterspecialist**$37.98**4.7★**▲ 14%**](https://www.amazon.com/dp/B0791F7PKR) [**Waterspecialist WS645A Refrigerator Water Filter 3 Pack**Waterspecialist**$27.23**4.7★**— 6%**](https://www.amazon.com/dp/B07KP6X4YK)
**~~View all trending →~~**
## **What buyers say about ws645a water filter samsung**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“Awesome fit”*
**Filtration**21%
*“Excellent Filter”*
**Value For Money**14%
*“Best value”*
**Quality-Overall**12%
*“Economical quality”*
**Advertised Vs Actual Product**10%
*“as advertised”*
**Compatibility-Overall**4%
*“compatibility without worrying about leaks or issues”*
**Ease Of Use**3%
*“easy to use”*
**Leak-Proof**1%
*“It doesnt leak”*
**Maintenance And Repair**1%
*“Easy Maintenance”*
**Pressure**1%
*“Perfect fit and water pressure asswome”*
### **What buyers complain about **
**Filtration**32%
*“Bad filter”*
**Leak-Proof**13%
*“It LEAKS”*
**Value For Money**10%
*“Wish they were cheaper”*
**Size-Overall**5%
*“Did not fit”*
**Functionality-Overall**5%
*“Did not work”*
**Certifications**4%
*“NOT SAMSUNG CERTIFIED”*
**Compatibility-Overall**4%
*“DOES NOT FIT RF32CG5300SR”*
**Advertised Vs Actual Product**4%
*“Doesn't look like photo”*
**Durability**4%
*“It did not last over a month”*
**Assembly/Installation**4%
*“A pain to install”*
### **Top return reasons **
**Size-Overall**36%
**Filtration**21%
**Compatibility-Overall**13%
**Leak-Proof**7%
**Advertised Vs Actual Product**4%
**Value For Money**4%
**Functionality-Overall**4%
**Certifications**2%
**Product Condition**2%
**Defective Material/Parts**2%
## **Common questions**
- **Is ws645a water filter samsung profitable to sell on Amazon United States?**
- The niche generates $114K/yr across 6 tracked products. 90-day search growth is +3.5%. Flapen's verdict: Skip it (40/100).
- **How competitive is the ws645a water filter samsung niche?**
- 5 brands and 18 sellers compete. The top 5 products take 96% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in ws645a water filter samsung?**
- Top complaints mined from reviews: Filtration, Leak-Proof, Value For Money. The return rate is 1.3%.
- **When does demand for ws645a water filter samsung peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the ws645a water filter samsung niche?**
- Listings span $20.75–$37.98; the average listing price is $28.33 (sweet spot $15–$100). The average incumbent carries 15,054 reviews — the moat a new listing must climb.
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