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.

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.

Conversion

Incredible16.9%

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

Great383.29

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.0%

return rate — above 5% kills the launch gate

Brand share

Good73%

top-5 brand share — brands hold most of the demand

Growth

Good+24.4%

90-day search growth — must beat 0% to launch

Competition

Okay70%

top-5 click share — leaders hold, buyers still browse

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Market size

Bad$57K

$57K/yr · 10K searches

Signals No Dominant Brand Low Review Barrier

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

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

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.

Peak months: May, Jun, Oct · busiest ÷ quietest = 2.4×

Open Trend

Top pww50 spa filter search terms

pww50 spa filter4K/yr +30.3%14.1% conv.
pww50p33K/yr +43.4%12.4% conv.
6ch-940 spa filter3K/yr +3.9%18.2% conv.

All 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.

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

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$32.294.7★312 rev

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$38.134.7★1,452 rev

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$46.234.7★1,579 rev

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$26.994.7★51 rev

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$31.764.4★242 rev

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$26.429 rev

4mo ago

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$26.0012 rev

4mo ago

DecoHongDi 6CH-940 Spa Filter Replaces PWW50P3(1 1/2 Coarse Thread)

DecoHongDi$23.8316 rev

5mo ago

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$25.9811 rev

6mo ago

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$26.9951 rev

11mo ago

What buyers say about pww50 spa filter

What buyers praise and complain about, mined from review topics.

What buyers love

Filtration23%

“Filters well”

Size-Overall21%

“Fits great”

Value For Money18%

“Saves Money”

Quality-Overall10%

“They feel comparable in quality to other filters Ive used”

Advertised Vs Actual Product8%

“were exactly what I needed”

Assembly/Installation5%

“Easy to install”

Ease Of Cleaning5%

“That makes routine cleaning quick”

Durability3%

“The material seems durable”

Material Quality1%

“The material feel durable”

Spray/Flow1%

“do a great job trapping debris while still allowing strong water flow”

What buyers complain about

Size-Overall28%

“but it's too big around”

Filtration25%

“Not the best filters I've used”

Quality-Overall10%

“Low quality”

Material Quality6%

“Very cheap plastic crap”

Smell5%

“It has a very strong smell compared to the name brand ones”

Thickness3%

“Pleats dont go nearly as deep as the Filbur filter”

Heating3%

“Caused my spa to overheat”

Jamming/Clogging3%

“Clogs way too fast”

Spray/Flow3%

“the flow is too restrictive”

Ease Of Use3%

“I am unable to used them”

Top return reasons

Size-Overall76%

Filtration13%

Advertised Vs Actual Product8%

Functionality-Overall1%

Value For Money1%

Defective Material/Parts1%

Assembly/Installation0%

Product Condition0%

Connectivity-Overall0%

Leak-Proof0%

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.