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54

subzero water filter 4204490

Worth a look

Shows searches that convert (17.8% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size 95Growth 36Conversion 99Competition 14Returns 88Price range 74Avg price 88Brand share 0Review moat 65Quality gap 25

Conversion

Incredible17.8%

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

Market size

Great$2.0M

$2.0M/yr · 176K searches

Returns

Great1.4%

return rate — above 5% kills the launch gate

Avg price

Great$63.32

avg listing price — sweet spot $15–$100

Price range

Good$12.78–$128.01

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Good901

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+9.0%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad83%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, subzero water filter 4204490 is a $2.0M/yr Amazon United States market (176K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 6, 2026 · scored weekly · How we score niches

subzero water filter 4204490 market data

Units sold / yr
30K–40K
avg 3,000–4,000/product
Revenue / yr
$1.9M–$2.5M
units × avg price
Conversion rate
17.8%
Avg BSR
#126
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
0.0%
Avg brand age
61 months
Avg seller age
168 days

Competition & brand share

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 rising

Sellers

9

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

0%

  • SUB-ZERO68%
  • GLACIER FRESH29%
  • Roscoe Medical2%

Demand & seasonality

Weekly Amazon search volume, last 108 weeks — +9.0% search growth over the last 90 days.
4K3KPrime Day '24Prime Day '25Spike '25Holiday '25DecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.6×

Top subzero water filter 4204490 search terms

  • subzero water filter replacement31K/yr
  • sub zero water filter replacement30K/yr
  • sub zero21K/yr
  • subzero19K/yr
  • sub zero air purification cartridge15K/yr
  • subzero air purification cartridge13K/yr
  • 42044909K/yr
  • subzero air filter replacement5K/yr
  • sub zero water filter4K/yr
  • sub zero air filter replacement3K/yr
All search terms

Top subzero water filter 4204490 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%10%$197K20%$395K30%$592K40%$790K1001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

What buyers say about subzero water filter 4204490

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

What buyers love

Size-Overall19%

“Fits perfectly”

Advertised Vs Actual Product15%

“Work as advertised”

Quality-Overall15%

“No complaints whatsoever”

Assembly/Installation13%

“Easy install”

Value For Money12%

“is a lot less expensive”

Filtration10%

“Best water filter”

Efficiency8%

“Works great as a replacement”

Air Purification3%

“The air filter is the authorized”

Heating2%

“Honestly, icy hot is better”

Smell2%

“so now I know thats why it always smells fresh”

What buyers complain about

Filtration43%

“The air purifier was damaged”

Functionality-Overall17%

“The air purifier would not reset”

Product Condition10%

“Received used filter”

Size-Overall7%

“The insertion tip is just a little too big”

Ethical Trade/Fair Trade5%

“Unethical seller”

Noise Level5%

“This cartridge rattles”

Hard Feel2%

“Was very dusty”

Quality-Overall2%

“Quality issue with original delivery”

Advertised Vs Actual Product2%

“This was an inaccurately listed item”

Jamming/Clogging2%

“cause a clog”

Top return reasons

Filtration23%
Size-Overall18%
Product Condition17%
Defective Material/Parts14%
Compatibility-Overall9%
Value For Money4%
Leak-Proof3%
Noise Level2%
Functionality-Overall2%
Advertised Vs Actual Product2%

Common questions

Is subzero water filter 4204490 profitable to sell on Amazon United States?
The niche generates $2.0M/yr across 10 tracked products. 90-day search growth is +9.0%. Flapen's verdict: Worth a look (54/100).
How competitive is the subzero water filter 4204490 niche?
3 brands and 9 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in subzero water filter 4204490?
Top complaints mined from reviews: Filtration, Functionality-Overall, Product Condition. The return rate is 1.4%.
When does demand for subzero water filter 4204490 peak?
Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the subzero water filter 4204490 niche?
Listings span $12.78–$128.01; the average listing price is $63.32 (sweet spot $15–$100). The average incumbent carries 901 reviews — the moat a new listing must climb.