---
title: "Airsense 11 Cpap Machine — $438K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/airsense-11-cpap-machine"
last_updated: "2026-08-09T18:43:55.584Z"
locale: en
meta:
description: "Niche score 69/100 · $438K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 69/100 · $438K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Airsense 11 Cpap Machine — $438K/yr Amazon US Niche (2026) - Flapen"
---
# **airsense 11 cpap machine**
**Worth a look**
Shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 57Growth 34Conversion 92Competition 46Returns 81Price range 95Avg price 95Brand share 76Review moat 94Quality gap 96
**Quality gap**
**Incredible****3.9★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Incredible****$31.60**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$26.85–$42.65**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****119.17**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****11.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.7%**
return rate — above 5% kills the launch gate
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Market size**
**Good****$438K**
$438K/yr · 123K searches
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+7.6%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0")
According to Flapen's Amazon United States niche tracking, airsense 11 cpap machine is a $438K/yr Amazon United States market (123K searches/yr). The top 5 brands hold 59% of demand. Verdict: Worth a look — 69/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **airsense 11 cpap machine market data**
- **Units sold / yr**
- **13K–15K**
- avg 500–750/product
- **Revenue / yr**
- **$395K–$474K**
- units × avg price
- **Conversion rate**
- **11.3%**
- **Avg BSR**
- **#803**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **100%**
- **Out of stock**
- **20.3%**
- **Avg brand age**
- **27 months**
- **Avg seller age**
- **124 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**25**
**Top-5 brand share**
**59%**
Top 20: 100%
**Top-5 click share**
**57%**
Top 20: 100%
**Open market**
**35%**
- EvoClean15% - Lullapad13% - TOY MANIAC12% - RespiraX10% - CKNET9% - Edionmier7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +7.6% search growth over the last 90 days.
3K2KSpike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/airsense-11-cpap-machine/trend)
## **Top airsense 11 cpap machine search terms**
- **airsense 11 water chamber**46K/yr+0.0%11.7% conv. - **resmed airsense 11 water chamber**35K/yr+33.9%8.1% conv. - **resmed 11 water chamber**13K/yr-9.0%9.6% conv. - **air sense 11 water chamber**7K/yr+17.1%12.3% conv. - **resmed water chamber airsense 11**6K/yr+10.0%15.0% conv. - **water chamber for resmed air11**3K/yr+19.8%11.0% conv. - **cpap water chamber airsense 11**3K/yr-19.2%11.6% conv. - **resmed airsense 11 tank**3K/yr-20.1%11.9% conv. - **resmed airsense 11 water tank**3K/yr-27.1%10.6% conv. - **humidair 11 water chamber**2K/yr-16.6%12.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/airsense-11-cpap-machine/search-terms)
## **Top airsense 11 cpap machine 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%4%$18K8%$35K12%$53K16%$70K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Water Chamber and Pap HumidAir Water Tank for ResMed AirSense 11 Tube Hose Machine**EvoClean**$30.90**3.9★713 rev](https://www.amazon.com/dp/B0D96M3C5F) [2**Lullapad Replacement Water Chamber S11 Compatible with HumidAir Humidifier for ResMed Air Sense 11 and Air Curve 11**Lullapad**$31.96**4.0★88 rev](https://www.amazon.com/dp/B01N7AJ0K9) [3**Replacement Water Chamber for AirSense 11 and AirCurve 11 Water Tank Compatible with HumidAir Standard Tub for Air11 Devices Heated CPAP humidifier Airsense 11 Supplies**TOY MANIAC**$29.08**3.6★168 rev](https://www.amazon.com/dp/B0FGX74N7Z) [4**RespiraX AirSense 11 Water Chamber Tank Replacement - for AirSense 11 and Aircurve 11**RespiraX**$34.15**4.6★142 rev](https://www.amazon.com/dp/B0FKTR55DM) [5**Replacement Water Chamber Tank for AirSense 11 and Aircurve 11 Machine**CKNET**$33.18**4.0★354 rev](https://www.amazon.com/dp/B0F4X6GH2Z)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Replacement Water Chamber for AirSense 11 and AirCurve 11 with 24 Pcs filters Supplies 380ml Humidifier Tub Water Tank Adapter Durable Base Design**SHLTHKA**$30.43**11 rev5mo ago](https://www.amazon.com/dp/B0GJBDWCBR) [**Replacement Water Chamber with 20 Packs Filters for AirSense 11 and AirCurve 11 Humidifier Water Tank Compatible with S11 Series CPAP Machines HumidAir Standard Tub CPAP Supplies and Accessories**Wagleriz**$31.38**54 rev6mo ago](https://www.amazon.com/dp/B0GFP4ZGTQ) [**YONCOZY Water Chamber for AirSense 11 & AirCurve 11 Replacement Water Tank with 24 Packs AirSense 11 Filters Reliable Seal & Easy Install S11 CPAP Supplies**YONCOZY**$32.69**58 rev6mo ago](https://www.amazon.com/dp/B0GCR6ZG9H) [**Water Chamber Tank for ResMed AirSense 11 Tube Hose Machine Replacement Pap HumidAir Water Tank for CPAP Machine Hose**YONCOZY**$27.67**87 rev7mo ago](https://www.amazon.com/dp/B0G6BXG39F) [**Water Chamber for AirSense 11 & AirCurve 11 Perfect Fit and Seal Replacement Water Tank Compatible with AirSense 11 Machines Reliable CPAP S11 Supplies**JoyHi**$27.71**95 rev7mo ago](https://www.amazon.com/dp/B0G648JHPP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Replacement Water Chamber Compatible with AirSense 11 and Aircurve 11 Replacement Humidifier Tank Compatible with S11 Series Same Capacity As Original CPAP Supplies and Accessories**TOY MANIAC**$29.82**4.5★**▲ 210%**](https://www.amazon.com/dp/B0FFS9Y6KT) [**Replacement Water Chamber for AirSense 11 and AirCurve 11 with 24 Pcs filters Supplies 380ml Humidifier Tub Water Tank Adapter Durable Base Design**SHLTHKA**$30.43**4.2★**▲ 189%**](https://www.amazon.com/dp/B0GJBDWCBR) [**Replacement Water Chamber with 20 Packs Filters for AirSense 11 and AirCurve 11 Humidifier Water Tank Compatible with S11 Series CPAP Machines HumidAir Standard Tub CPAP Supplies and Accessories**Wagleriz**$31.38**3.9★**▲ 117%**](https://www.amazon.com/dp/B0GFP4ZGTQ) [**Lullapad Replacement Water Chamber S11 Compatible with HumidAir Humidifier for ResMed Air Sense 11 and Air Curve 11**Lullapad**$31.96**4.0★**▲ 95%**](https://www.amazon.com/dp/B01N7AJ0K9) [**Replacement Water Chamber for ResMed AirSense 11 & AirCurve 11 Durable Humidifier Tank Easy to Fill & Clean Leak-Resistant CPAP Water Chamber**YSSKTC**$30.37**4.0★**▲ 94%**](https://www.amazon.com/dp/B0G64LS7LX)
**~~View all trending →~~**
## **What buyers say about airsense 11 cpap machine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**29%
*“Exact fit”*
**Value For Money**11%
*“Good deal”*
**Leak-Proof**10%
*“No air leaks”*
**Quality-Overall**10%
*“Good Quality”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Durability**4%
*“Seems durable”*
**Compatibility-Overall**2%
*“compatible”*
**Ease Of Use**2%
*“Easy to use”*
**Ease Of Cleaning**2%
*“Easy to Clean”*
**Efficiency**2%
*“Functional”*
### **What buyers complain about **
**Leak-Proof**32%
*“leaks water”*
**Size-Overall**10%
*“Just slightly too large”*
**Quality-Overall**9%
*“Junk quality”*
**Durability**7%
*“Don't last”*
**Ease Of Use**5%
*“Difficult to remove”*
**Rusts/Corrodes**2%
*“Also started rusting”*
**Material Quality**2%
*“And slight material differences between them”*
**Water Resistance**2%
*“leaks water after barely any use”*
**Value For Money**1%
*“too expensive”*
**Ease Of Cleaning**1%
*“and won't get clean after washing anymore”*
### **Top return reasons **
**Leak-Proof**38%
**Size-Overall**24%
**Compatibility-Overall**10%
**Water Resistance**4%
**Advertised Vs Actual Product**3%
**Functionality-Overall**3%
**Ease Of Use**3%
**Product Condition**3%
**Durability**2%
**Rusts/Corrodes**1%
## **Common questions**
- **Is airsense 11 cpap machine profitable to sell on Amazon United States?**
- The niche generates $438K/yr across 18 tracked products. 8 of 9 products launched in the last 360 days are still selling. 90-day search growth is +7.6%. Flapen's verdict: Worth a look (69/100).
- **How competitive is the airsense 11 cpap machine niche?**
- 16 brands and 25 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in airsense 11 cpap machine?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Quality-Overall. The return rate is 1.7%.
- **When does demand for airsense 11 cpap machine peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the airsense 11 cpap machine niche?**
- Listings span $26.85–$42.65; the average listing price is $31.60 (sweet spot $15–$100). The average incumbent carries 119 reviews — the moat a new listing must climb.
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