---
title: "Protec Humidifier Filter — $41K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/protec-humidifier-filter"
last_updated: "2026-08-09T11:07:27.959Z"
locale: en
meta:
description: "Niche score 34/100 · $41K/yr market · 13K searches/yr · $19.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 34/100 · $41K/yr market · 13K searches/yr · $19.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Protec Humidifier Filter — $41K/yr Amazon US Niche (2026) - Flapen"
---
# **protec humidifier filter**
**Skip it**
Soft demand (-54.4% this quarter) — this niche doesn't clear our bar today.
Market size 10Growth 0Conversion 98Competition 7Returns 96Price range 80Avg price 87Brand share 0Review moat 43Quality gap 15
**Conversion**
**Incredible****16.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$19.69**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.99–$32.60**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****2,159.38**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$41K**
$41K/yr · 13K searches
**Competition**
**Bad****92%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-54.4%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, protec humidifier filter is a $41K/yr Amazon United States market (13K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Mar. Verdict: Skip it — 34/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **protec humidifier filter market data**
- **Units sold / yr**
- **3K–3K**
- avg 250–500/product
- **Revenue / yr**
- **$49K–$59K**
- units × avg price
- **Conversion rate**
- **16.5%**
- **Avg BSR**
- **#2,163**
- **Page quality**
- **0%**
- **Prime**
- **63%**
- **Sponsored**
- **75%**
- **Out of stock**
- **11.1%**
- **Avg brand age**
- **86 months**
- **Avg seller age**
- **186 days**
## **Competition & brand share**
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**16**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**92%**
Top 20: 100%
**Open market**
**0%**
- Protec41% - Alocs28% - Ximoon23% - UpStart Components8%
## **Demand & seasonality**
Weekly Amazon search volume, last 109 weeks — -54.4% search growth over the last 90 days.
600400Prime Day '24Spike '24Holiday '24Spike '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb, Mar · busiest ÷ quietest = 6.9×
[**Open Trend **](https://flapen.com/research/us/appliances/protec-humidifier-filter/trend)
## **Top protec humidifier filter search terms**
- **protec pwf2 replacement wicking filter**6K/yr-58.7%20.8% conv. - **protec humidifier filter**4K/yr-37.4%13.0% conv. - **protec pwf2 filter for vicks humidifier**2K/yr-63.8%7.8% conv. [**All search terms **](https://flapen.com/research/us/appliances/protec-humidifier-filter/search-terms)
## **Top protec humidifier 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%10%$4K20%$8K30%$12K40%$16K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Protec Extended Life Humidifier Replacement Filter 1 Count**Protec**$11.76**4.5★6,332 rev](https://www.amazon.com/dp/B003UV8OC2) [2**WF2 Humidifier Filter for Kaz Vicks - V3100 V3500 V3700 V3800 V3900 3020 Series Protec PWF2 VEV400 Cool Mist Vaporizer Humidifiers (Pack of 4) White**Alocs**$19.07**4.7★370 rev](https://www.amazon.com/dp/B0B846286W) [3**Ximoon WF2 Humidifier Filter Replacement for Vicks Kaz Humidifier 4 Pack**Ximoon**$20.10**4.7★2,117 rev](https://www.amazon.com/dp/B07ZLP1ZFG) [4**Protec Extended Life Humidifier Replacement Filter 3 Pack**Protec**$22.99**4.5★6,332 rev](https://www.amazon.com/dp/B0183RU1WI) [5**Ximoon WF2 Humidifier Filter Replacement for Vicks Kaz Humidifier 2 Pack**Ximoon**$15.17**4.7★2,117 rev](https://www.amazon.com/dp/B06ZZLMSWR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**6x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$24.86**1 rev6mo ago](https://www.amazon.com/dp/B0G7MDM6DJ) [**8x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$32.60**2 rev6mo ago](https://www.amazon.com/dp/B0G7MFZHB7) [**2x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$10.99**4 rev6mo ago](https://www.amazon.com/dp/B0G7M9B6S9) [**WF2 Humidifier Filter for Kaz Vicks - V3100 V3500 V3700 V3800 V3900 3020 Series Protec PWF2 VEV400 Cool Mist Vaporizer Humidifiers (Pack of 4) White**Alocs**$19.07**370 rev3y ago](https://www.amazon.com/dp/B0B846286W) [**Ximoon WF2 Humidifier Filter Replacement for Vicks Kaz Humidifier 4 Pack**Ximoon**$20.10**2,117 rev6y ago](https://www.amazon.com/dp/B07ZLP1ZFG)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**8x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$32.60**5.0★**▲ 417%**](https://www.amazon.com/dp/B0G7MFZHB7) [**6x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$24.86**5.0★**▲ 317%**](https://www.amazon.com/dp/B0G7MDM6DJ) [**2x WF2 Filter Fits Protec PWF2 Wicking Filter For Vicks Humidifier VEV400**UpStart Components**$10.99**5.0★**▲ 46%**](https://www.amazon.com/dp/B0G7M9B6S9) [**Ximoon WF2 Humidifier Filter Replacement for Vicks Kaz Humidifier 4 Pack**Ximoon**$20.10**4.7★**▲ 42%**](https://www.amazon.com/dp/B07ZLP1ZFG) [**Protec Extended Life Humidifier Replacement Filter 1 Count**Protec**$11.76**4.5★**▲ 40%**](https://www.amazon.com/dp/B003UV8OC2)
**~~View all trending →~~**
## **What buyers say about protec humidifier filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**24%
*“Just what i needed”*
**Size-Overall**24%
*“Amazing fit”*
**Filtration**13%
*“We have had no issues with these filters”*
**Value For Money**13%
*“Great deal”*
**Quality-Overall**11%
*“No complaints”*
**Humidification**8%
*“Fits in my humidifier”*
**Color**3%
*“nice color”*
**Compatibility-Overall**2%
*“Worked perfectly with my humidifier”*
### **What buyers complain about **
**Size-Overall**38%
*“Did not fit”*
**Advertised Vs Actual Product**25%
*“Wrong advertising information”*
**Filtration**13%
*“Perfect replacement, wife bought wrong humidifier. wrong being one that needs a filter to begin with”*
**Humidification**13%
*“The filter did not fit my humidifier”*
### **Top return reasons **
**Size-Overall**53%
**Filtration**19%
**Compatibility-Overall**8%
**Humidification**7%
**Functionality-Overall**3%
**Advertised Vs Actual Product**3%
**Value For Money**3%
**Smell**1%
**Material Quality**1%
**Color**1%
## **Common questions**
- **Is protec humidifier filter profitable to sell on Amazon United States?**
- The niche generates $41K/yr across 8 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -54.4%. Flapen's verdict: Skip it (34/100).
- **How competitive is the protec humidifier filter niche?**
- 4 brands and 16 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in protec humidifier filter?**
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Filtration. The return rate is 0.8%.
- **When does demand for protec humidifier filter peak?**
- Demand peaks in Jan–Feb–Mar; the busiest month runs 6.9× the quietest.
- **What does it cost to enter the protec humidifier filter niche?**
- Listings span $10.99–$32.60; the average listing price is $19.69 (sweet spot $15–$100). The average incumbent carries 2,159 reviews — the moat a new listing must climb.
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