---
title: "Pww50 Spa Filter — $57K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/pww50-spa-filter"
last_updated: "2026-08-07T07:56:59.392Z"
locale: en
meta:
description: "Niche score 52/100 · $57K/yr market · 10K searches/yr · $33.01 avg price. A small market ($57K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $57K/yr market · 10K searches/yr · $33.01 avg price. A small market ($57K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Pww50 Spa Filter — $57K/yr Amazon US Niche (2026) - Flapen"
---
# **pww50 spa filter**
**Worth a look**
Shows searches that convert (16.9% search→purchase), but a small market ($57K/yr) keeps it on the watch list.
Market size 14Growth 53Conversion 98Competition 25Returns 75Price range 95Avg price 95Brand share 54Review moat 81Quality gap 19
**Conversion**
**Incredible****16.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$33.01**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$20.11–$53.37**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****383.29**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.0%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Growth**
**Good****+24.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****70%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$57K**
$57K/yr · 10K searches
**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")
According to Flapen's Amazon United States niche tracking, pww50 spa filter is a $57K/yr Amazon United States market (10K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in May–Jun–Oct. Verdict: Worth a look — 52/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pww50 spa filter market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$50K–$66K**
- units × avg price
- **Conversion rate**
- **16.9%**
- **Avg BSR**
- **#642**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **3.3%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **217 days**
## **Competition & brand share**
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**73%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**22%**
- Mamokin19% - POOLPURE15% - TOREAD14% - KGC12% - Beckacher12% - TALANDO6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +24.4% search growth over the last 90 days.
300200Spike '24Spike '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Oct · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/pww50-spa-filter/trend)
## **Top pww50 spa filter search terms**
- **pww50 spa filter**4K/yr+30.3%14.1% conv. - **pww50p3**3K/yr+43.4%12.4% conv. - **6ch-940 spa filter**3K/yr+3.9%18.2% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/pww50-spa-filter/search-terms)
## **Top pww50 spa 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%5%$3K10%$6K15%$9K20%$11K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Mamokin PWW50 Spa Filter Replaces 6CH-940Filbur FC-0359 817-0050 25252 03FIL1400 PWW50P3(NOT PWW50P4) (1 1/2 Coarse Thread) Waterway Front Access Skimmer SAE Thread Hot Tub Filter 2 Pack**Mamokin**$32.29**4.7★312 rev](https://www.amazon.com/dp/B0B5XC4DV2) [2**PWW50P3 SPA Filter Replacement for Unicel 6CH-940 FC-0359 817-0050 25252 03FIL1400 1 1/2 SAE Thread Screw in Filter 2 Pack**TOREAD**$38.13**4.7★1,452 rev](https://www.amazon.com/dp/B08212MS8X) [3**POOLPURE 6CH-940 Spa Filter Replaces PWW50P3(1 1/2 Coarse Thread) 817-0050 Filbur FC-0359 25252 03FIL1400 Waterway Front Access Skimmer Screw in SAE Thread Filter 2 Pack**POOLPURE**$46.23**4.7★1,579 rev](https://www.amazon.com/dp/B08119FD1P) [4**KGC 6CH-940 Spa Filter 2 Pack - Compatible with Pleatco PWW50P3 (1 1/2 SAE Coarse Thread) Unicel 6CH-940 Filbur FC-0359 Waterway 817-0050 03FIL1400 25252-for Viking Spa Front Access Skimmer.**KGC**$26.99**4.7★51 rev](https://www.amazon.com/dp/B0FMXYJRRT) [5**6CH-940 Spa Filter Cartridge Replacement for Unicel Pleatco PWW50P3 Filbur FC-0359 Aber 03FIL1400 Waterway 817-0050 Front Access Skimmer Viking Pool Hot Tub Filter Screw SAE Thread Filter 2 Pack**Beckacher**$31.76**4.4★242 rev](https://www.amazon.com/dp/B0CSK3QC14)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**6CH-940 Spa Filter Cartridge Replacement for Unicel Pleatco PWW50P3 Filbur FC-0359 Aber 03FIL1400 Waterway 817-0050 Front Access Skimmer Viking Pool Hot Tub Filter Screw SAE Thread Filter 2-Pack**TALANDO**$26.42**9 rev4mo ago](https://www.amazon.com/dp/B0GQSHGS17) [**ZUJAR 06008 Filter Compatible with 6CH-940 PWW50P3 (NOT PWW50P4) FC-0359 Viking Spa Hot Tub Filter 45 Sq. Ft Spa Filter Cartridge 2 Pack**ZUJAR**$26.00**12 rev4mo ago](https://www.amazon.com/dp/B0GQSKPHFS) [**DecoHongDi 6CH-940 Spa Filter Replaces PWW50P3(1 1/2 Coarse Thread)**DecoHongDi**$23.83**16 rev5mo ago](https://www.amazon.com/dp/B0GKR7R29R) [**6CH-940 Spa Filter Compatible with PWW50P3(1 1/2 Coarse Thread) 817-0050 Filbur FC-0359 25252 03FIL1400 Waterway Front Access Skimmer Pool Replacement Cartridge Filter 2 Pack 5.87x9.67**LBLVBNEWD**$25.98**11 rev6mo ago](https://www.amazon.com/dp/B0GCZBGSY3) [**KGC 6CH-940 Spa Filter 2 Pack - Compatible with Pleatco PWW50P3 (1 1/2 SAE Coarse Thread) Unicel 6CH-940 Filbur FC-0359 Waterway 817-0050 03FIL1400 25252-for Viking Spa Front Access Skimmer.**KGC**$26.99**51 rev11mo ago](https://www.amazon.com/dp/B0FMXYJRRT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**6CH-940 Spa Filter Cartridge Replacement for Unicel Pleatco PWW50P3 Filbur FC-0359 Aber 03FIL1400 Waterway 817-0050 Front Access Skimmer Viking Pool Hot Tub Filter Screw SAE Thread Filter 2-Pack**TALANDO**$26.42**5.0★**▲ 227%**](https://www.amazon.com/dp/B0GQSHGS17) [**ZUJAR 06008 Filter Compatible with 6CH-940 PWW50P3 (NOT PWW50P4) FC-0359 Viking Spa Hot Tub Filter 45 Sq. Ft Spa Filter Cartridge 2 Pack**ZUJAR**$26.00**5.0★**▲ 224%**](https://www.amazon.com/dp/B0GQSKPHFS) [**DecoHongDi 6CH-940 Spa Filter Replaces PWW50P3(1 1/2 Coarse Thread)**DecoHongDi**$23.83**4.8★**▲ 198%**](https://www.amazon.com/dp/B0GKR7R29R) [**6CH-940 Spa Filter Compatible with PWW50P3(1 1/2 Coarse Thread) 817-0050 Filbur FC-0359 25252 03FIL1400 Waterway Front Access Skimmer Pool Replacement Cartridge Filter 2 Pack 5.87x9.67**LBLVBNEWD**$25.98**4.6★**▲ 192%**](https://www.amazon.com/dp/B0GCZBGSY3) [**LVJUSEN PWW50P3 Spa Filter Replacement for Pleatco Pure PWW50P3/Unicel 6CH-940 Spa Filter/Viking Spa Filter WWY607D/ Waterway 817-0050/ Filbur FC-0359 25252 03FIL1400**LVJUSEN**$20.11**4.7★**▲ 111%**](https://www.amazon.com/dp/B0D14519R3)
**~~View all trending →~~**
## **What buyers say about pww50 spa filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**23%
*“Filters well”*
**Size-Overall**21%
*“Fits great”*
**Value For Money**18%
*“Saves Money”*
**Quality-Overall**10%
*“They feel comparable in quality to other filters Ive used”*
**Advertised Vs Actual Product**8%
*“were exactly what I needed”*
**Assembly/Installation**5%
*“Easy to install”*
**Ease Of Cleaning**5%
*“That makes routine cleaning quick”*
**Durability**3%
*“The material seems durable”*
**Material Quality**1%
*“The material feel durable”*
**Spray/Flow**1%
*“do a great job trapping debris while still allowing strong water flow”*
### **What buyers complain about **
**Size-Overall**28%
*“but it's too big around”*
**Filtration**25%
*“Not the best filters I've used”*
**Quality-Overall**10%
*“Low quality”*
**Material Quality**6%
*“Very cheap plastic crap”*
**Smell**5%
*“It has a very strong smell compared to the name brand ones”*
**Thickness**3%
*“Pleats dont go nearly as deep as the Filbur filter”*
**Heating**3%
*“Caused my spa to overheat”*
**Jamming/Clogging**3%
*“Clogs way too fast”*
**Spray/Flow**3%
*“the flow is too restrictive”*
**Ease Of Use**3%
*“I am unable to used them”*
### **Top return reasons **
**Size-Overall**76%
**Filtration**13%
**Advertised Vs Actual Product**8%
**Functionality-Overall**1%
**Value For Money**1%
**Defective Material/Parts**1%
**Assembly/Installation**0%
**Product Condition**0%
**Connectivity-Overall**0%
**Leak-Proof**0%
## **Common questions**
- **Is pww50 spa filter profitable to sell on Amazon United States?**
- The niche generates $57K/yr across 17 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +24.4%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the pww50 spa filter niche?**
- 15 brands and 18 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in pww50 spa filter?**
- Top complaints mined from reviews: Size-Overall, Filtration, Quality-Overall. The return rate is 2.0%.
- **When does demand for pww50 spa filter peak?**
- Demand peaks in May–Jun–Oct; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the pww50 spa filter niche?**
- Listings span $20.11–$53.37; the average listing price is $33.01 (sweet spot $15–$100). The average incumbent carries 383 reviews — the moat a new listing must climb.
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