Is viking spa filter profitable to sell on Amazon United States?

The niche generates $44K/yr across 20 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is +30.8%. Flapen's verdict: Worth a look (57/100).

How competitive is the viking spa filter niche?

17 brands and 20 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 61% of demand.

What do buyers complain about in viking spa filter?

Top complaints mined from reviews: Filtration, Size-Overall, Quality-Overall. The return rate is 2.1%.

When does demand for viking spa filter peak?

Demand peaks in Apr–May; the busiest month runs 2.1× the quietest.

What does it cost to enter the viking spa filter niche?

Listings span $20.11–$53.37; the average listing price is $32.65 (sweet spot $15–$100). The average incumbent carries 341 reviews — the moat a new listing must climb.

viking spa filter

Worth a look

Shows searches that convert (13.2% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Conversion

Incredible13.2%

search→purchase rate — share of searches ending in a sale

Avg price

Incredible$32.65

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

Great340.75

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.1%

return rate — above 5% kills the launch gate

Brand share

Good61%

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

Growth

Good+30.8%

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

Competition

Okay59%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Market size

Bad$44K

$44K/yr · 10K searches

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, viking spa filter is a $44K/yr Amazon United States market (10K searches/yr). The top 5 brands hold 61% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 57/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

viking spa filter market data

Units sold / yr: 2K–2K; avg 0–100/product
Revenue / yr: $49K–$65K; units × avg price
Conversion rate: 13.2%
Avg BSR: #594
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 40 months
Avg seller age: 216 days

Competition & brand share

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

17 falling

Sellers

Top-5 brand share

61%

Top 20: 100%

Top-5 click share

59%

Top 20: 100%

Open market

30%

TOREAD14%
POOLPURE14%
Beckacher12%
KGC12%
Cryspool10%
LVJUSEN9%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +30.8% search growth over the last 90 days.

Peak months: Apr, May · busiest ÷ quietest = 2.1×

Open Trend

Top viking spa filter search terms

viking spa filter4K/yr +49.9%9.3% conv.
pww50p33K/yr +43.4%12.8% conv.
6ch-940 spa filter3K/yr +3.9%18.2% conv.

All search terms

Top viking 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

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

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

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

Cryspool 06008 Filter Compatible with 6CH-940 PWW50P3 (NOT PWW50P4) FC-0359 Viking Spa Hot Tub Filter 45 Sq. Ft Spa Filter Cartridge 2 Pack

Cryspool$39.044.6★658 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

FOIRCEADAL Hot Tub Filter Compatible with Unicel 6CH-940 Filbur FC-0359 PWW50P3 817-0050 25252 03FIL1400 (1 1/2 SAE Thread) Pool Spa Filters Cartridge Replacements 2 Pack

FOIRCEADAL$29.3558 rev

7mo ago

What buyers say about viking spa filter

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

What buyers love

Size-Overall23%

“Exact fit”

Filtration23%

“Filters well”

Value For Money17%

“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 Cleaning4%

“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

Filtration25%

“Not the best filters I've used”

Size-Overall25%

“but it's too big around”

Quality-Overall14%

“Low quality”

Material Quality5%

“Very cheap plastic crap”

Smell5%

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

Heating5%

“damaged the heating element in our unit”

Spray/Flow2%

“the flow is too restrictive”

Thickness2%

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

Ease Of Use2%

“I am unable to used them”

Jamming/Clogging2%

“Clogs way too fast”

Top return reasons

Size-Overall75%

Filtration14%

Advertised Vs Actual Product8%

Functionality-Overall1%

Defective Material/Parts1%

Value For Money1%

Product Condition0%

Assembly/Installation0%

Connectivity-Overall0%

Add-Ons/Attachments0%

Common questions

Is viking spa filter profitable to sell on Amazon United States?: The niche generates $44K/yr across 20 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is +30.8%. Flapen's verdict: Worth a look (57/100).
How competitive is the viking spa filter niche?: 17 brands and 20 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 61% of demand.
What do buyers complain about in viking spa filter?: Top complaints mined from reviews: Filtration, Size-Overall, Quality-Overall. The return rate is 2.1%.
When does demand for viking spa filter peak?: Demand peaks in Apr–May; the busiest month runs 2.1× the quietest.
What does it cost to enter the viking spa filter niche?: Listings span $20.11–$53.37; the average listing price is $32.65 (sweet spot $15–$100). The average incumbent carries 341 reviews — the moat a new listing must climb.