---
title: "airsense 11 cpap machine — Niche Verdict: Worth a look (69/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/airsense-11-cpap-machine"
last_updated: "2026-07-14T04:27:28.005Z"
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meta:
  description: "airsense 11 cpap machine shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "airsense 11 cpap machine shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "airsense 11 cpap machine — Niche Verdict: Worth a look (69/100) | Amazon United States - Flapen"
---

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# **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 6% 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

## **Competition**

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%**

**Open market**

**35%**

- EvoClean15% - Lullapad13% - TOY MANIAC12% - RespiraX10% - CKNET9% - Edionmier7%

## **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%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](https://m.media-amazon.com/images/I/41taEPxEqVL.jpg)**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](https://m.media-amazon.com/images/I/310VL1J4CWL.jpg)**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](https://m.media-amazon.com/images/I/418KLqcbA1L.jpg)**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](https://m.media-amazon.com/images/I/41BeP2aHpML.jpg)**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](https://m.media-amazon.com/images/I/41SedICEf0L.jpg)**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](https://m.media-amazon.com/images/I/41bNzZg8bTL.jpg)**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](https://m.media-amazon.com/images/I/31BfK5GDaUL.jpg)**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](https://m.media-amazon.com/images/I/41Y6-GNHDSL.jpg)**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](https://m.media-amazon.com/images/I/41q6JLuxN7L.jpg)**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](https://m.media-amazon.com/images/I/41q8+3CKaSL.jpg)**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](https://m.media-amazon.com/images/I/41-luhKHVNL.jpg)**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](https://m.media-amazon.com/images/I/41bNzZg8bTL.jpg)**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](https://m.media-amazon.com/images/I/31BfK5GDaUL.jpg)**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](https://m.media-amazon.com/images/I/310VL1J4CWL.jpg)**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](https://m.media-amazon.com/images/I/419K6GD5XlL.jpg)**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 →~~**

## **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×

## **Reviews**

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%