---
title: "subzero water filter 4204490 — $1.6M/yr Amazon United States Niche, Score 54/100 - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/subzero-water-filter-4204490"
last_updated: "2026-07-20T18:05:53.290Z"
locale: en
meta:
description: "subzero water filter 4204490 shows searches that convert (16.2% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "subzero water filter 4204490 shows searches that convert (16.2% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "subzero water filter 4204490 — $1.6M/yr Amazon United States Niche, Score 54/100 - Flapen"
---
# **subzero water filter 4204490**
**Worth a look**
Shows searches that convert (16.2% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 88Growth 34Conversion 98Competition 18Returns 88Price range 74Avg price 91Brand share 0Review moat 66Quality gap 24
**Conversion**
**Incredible****16.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$56.70**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$1.6M**
$1.6M/yr · 176K searches
**Returns**
**Great****1.4%**
return rate — above 6% kills the launch gate
**Price range**
**Good****$12.78–$128.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****862.08**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+7.4%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****79%**
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, subzero water filter 4204490 is a $1.6M/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 ~~](https://flapen.com/research/methodology)
## **Market data**
- **Units sold / yr**
- **30K–40K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$1.7M–$2.3M**
- units × avg price
- **Launch success**
- **—**
- 0 of 0 new (360d)
- **Conversion rate**
- **16.2%**
- **Avg BSR**
- **#232**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **171 days**
## **Competition**
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**11**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**79%**
Top 20: 100%
**Open market**
**0%**
- SUB-ZERO64% - GLACIER FRESH31% - Roscoe Medical2% - VitaLiving2% - Lifefilter1%
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +7.4% search growth over the last 90 days.
4K3KPrime Day '24Prime Day '25Spike '25Holiday '25 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/appliances/subzero-water-filter-4204490/trend)
## **Product shelf**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$81K10%$162K15%$243K20%$325K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Sub-Zero 4204490 Refrigerator Water Filter**SUB-ZERO**$68.54**4.7★972 rev](https://www.amazon.com/dp/B07C5WBJZZ) [2**Sub-Zero Refrigerator Replacement Water and Air Filter Combo Pack 4204490 7007067**SUB-ZERO**$126.31**4.4★321 rev](https://www.amazon.com/dp/B0CL8BHRS3) [3**Sub-Zero Air Purification Cartridge-7042798**SUB-ZERO**$64.52**4.5★747 rev](https://www.amazon.com/dp/B091Q9TKVG) [4**GLACIER FRESH Water Filter Replacement for Sub-Zero 4204490 4290510 9030868 Refrigerator Water Filter 2 Pack**GLACIER FRESH**$36.31**4.6★1,436 rev](https://www.amazon.com/dp/B07X1W3NVJ) [5**Sub-Zero 4204490 Refrigerator Water Filter Replacement Cartridge 2 Pack**SUB-ZERO**$128.08**4.6★150 rev](https://www.amazon.com/dp/B0CL8DSYG4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Lifefilter Water Filter Replacement for Sub-Zero 4204490 4290510 9030868 Refrigerator Water Filter 3 Pack**Lifefilter**$34.32**32 rev1y ago](https://www.amazon.com/dp/B0DRY5XRR3) [**Sub-Zero Refrigerator Replacement Water and Air Filter Combo Pack 4204490 7007067**SUB-ZERO**$126.31**321 rev2y ago](https://www.amazon.com/dp/B0CL8BHRS3) [**Sub-Zero 4204490 Refrigerator Water Filter Replacement Cartridge 2 Pack**SUB-ZERO**$128.08**150 rev4y ago](https://www.amazon.com/dp/B0CL8DSYG4) [**GLACIER FRESH Replacement for 4204490 Water Filter and 7007067 Air Purification Cartridge Combo Pack Compatible with Sub-Zero 4204490 4290510 Water Filter 7042798/7007067 Air Filter(1+1)**GLACIER FRESH**$69.89**702 rev5y ago](https://www.amazon.com/dp/B098NKZQL5) [**Replacement for Sub Zero 4204490 Water Filter & 7007067 Air Purification Cartridge Combo Pack Compatible with SubZero 4290510 9030868 Sub-Zero 7042798 (1+1Pack)**VitaLiving**$35.79**17 rev5y ago](https://www.amazon.com/dp/B0G2GRMWLJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Replacement for Sub Zero 4204490 Water Filter & 7007067 Air Purification Cartridge Combo Pack Compatible with SubZero 4290510 9030868 Sub-Zero 7042798 (1+1Pack)**VitaLiving**$35.79**4.9★**▲ 220%**](https://www.amazon.com/dp/B0G2GRMWLJ) [**Sub Zero Cooling Pain Relief Gel 16oz Bottle with Pump - Joint Relief and Nerve Pain Relief Cream for Muscle Deep Pain Relief and Arthritis Relief**Roscoe Medical**$12.78**4.4★**▲ 143%**](https://www.amazon.com/dp/B004S26QY0) [**GLACIER FRESH Replacement for 4204490 Water Filter and 7007067 Air Purification Cartridge Combo Pack Compatible with Sub-Zero 4204490 4290510 Water Filter 7042798/7007067 Air Filter(1+1)**GLACIER FRESH**$69.89**4.7★**▲ 43%**](https://www.amazon.com/dp/B098NKZQL5) [**Lifefilter Water Filter Replacement for Sub-Zero 4204490 4290510 9030868 Refrigerator Water Filter 3 Pack**Lifefilter**$34.32**4.7★**▲ 42%**](https://www.amazon.com/dp/B0DRY5XRR3) [**GLACIER FRESH Replacement for Sub-Zero Refrigerator Air Purification Cartridge 7042798 7007076 7007067 Air Filter (1 Pack)**GLACIER FRESH**$35.01**4.7★**▲ 28%**](https://www.amazon.com/dp/B082HMG1L9)
**~~View all trending →~~**
## **Reviews**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**21%
*“Fits perfectly”*
**Value For Money**18%
*“Great Value”*
**Quality-Overall**12%
*“No complaints whatsoever”*
**Filtration**12%
*“Good filter”*
**Advertised Vs Actual Product**12%
*“Work as advertised”*
**Assembly/Installation**7%
*“Easy install”*
**Efficiency**6%
*“Works great as a replacement”*
**Air Purification**4%
*“Keeps Fridge Air Fresh”*
**Smell**2%
*“so now I know thats why it always smells fresh”*
**Ease Of Use**2%
*“Quick and easy”*
### **What buyers complain about **
**Filtration**34%
*“The air purifier was damaged”*
**Functionality-Overall**12%
*“The air purifier would not reset”*
**Product Condition**9%
*“Received used filter”*
**Size-Overall**5%
*“The insertion tip is just a little too big”*
**Defective Material/Parts**3%
*“You can also hear the broken pieces in the unit”*
**Ethical Trade/Fair Trade**3%
*“Unethical seller”*
**Ease Of Cleaning**3%
*“Dirty”*
**Noise Level**3%
*“This cartridge rattles”*
**Value For Money**2%
*“more expensive,”*
**Advertised Vs Actual Product**2%
*“This was an inaccurately listed item”*
### **Top return reasons **
**Filtration**23%
**Product Condition**18%
**Size-Overall**18%
**Defective Material/Parts**14%
**Compatibility-Overall**9%
**Value For Money**4%
**Leak-Proof**3%
**Noise Level**2%
**Functionality-Overall**2%
**Advertised Vs Actual Product**1%
## **Common questions**
- **Is subzero water filter 4204490 profitable to sell on Amazon United States?**
- The niche generates $1.6M/yr across 13 tracked products. 90-day search growth is +7.4%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the subzero water filter 4204490 niche?**
- 5 brands and 11 sellers compete. The top 5 products take 79% 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–$128.08; the average listing price is $56.70 (sweet spot $15–$100). The average incumbent carries 862 reviews — the moat a new listing must climb.
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