airsense 11 cpap machine
Worth a lookShows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Quality gap
Incredible3.9★avg incumbent rating — lower means beatable quality
Avg price
Incredible$31.60avg listing price — sweet spot $15–$100
Price range
Incredible$26.85–$42.65cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great119.17avg incumbent reviews — the moat a new listing must climb
Conversion
Great11.3%search→purchase rate — share of searches ending in a sale
Returns
Great1.7%return rate — above 6% kills the launch gate
Brand share
Great59%top-5 brand share — no brand owns this niche
Market size
Good$438K$438K/yr · 123K searches
Competition
Okay57%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.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Water Chamber and Pap HumidAir Water Tank for ResMed AirSense 11 Tube Hose Machine
EvoClean$30.903.9★713 rev
Lullapad Replacement Water Chamber S11 Compatible with HumidAir Humidifier for ResMed Air Sense 11 and Air Curve 11
Lullapad$31.964.0★88 rev
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$29.083.6★168 rev
RespiraX AirSense 11 Water Chamber Tank Replacement - for AirSense 11 and Aircurve 11
RespiraX$34.154.6★142 rev
Replacement Water Chamber Tank for AirSense 11 and Aircurve 11 Machine
CKNET$33.184.0★354 rev
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$30.4311 rev
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$31.3854 rev
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$32.6958 rev
Water Chamber Tank for ResMed AirSense 11 Tube Hose Machine Replacement Pap HumidAir Water Tank for CPAP Machine Hose
YONCOZY$27.6787 rev
Water Chamber for AirSense 11 & AirCurve 11 Perfect Fit and Seal Replacement Water Tank Compatible with AirSense 11 Machines Reliable CPAP S11 Supplies
JoyHi$27.7195 rev
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$29.824.5★
Replacement Water Chamber for AirSense 11 and AirCurve 11 with 24 Pcs filters Supplies 380ml Humidifier Tub Water Tank Adapter Durable Base Design
SHLTHKA$30.434.2★
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$31.383.9★
Lullapad Replacement Water Chamber S11 Compatible with HumidAir Humidifier for ResMed Air Sense 11 and Air Curve 11
Lullapad$31.964.0★
Replacement Water Chamber for ResMed AirSense 11 & AirCurve 11 Durable Humidifier Tank Easy to Fill & Clean Leak-Resistant CPAP Water Chamber
YSSKTC$30.374.0★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +7.6% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Exact fit”
“Good deal”
“No air leaks”
“Good Quality”
“As advertised”
“Seems durable”
“compatible”
“Easy to use”
“Easy to Clean”
“Functional”
What buyers complain about
“leaks water”
“Just slightly too large”
“Junk quality”
“Don't last”
“Difficult to remove”
“Also started rusting”
“And slight material differences between them”
“leaks water after barely any use”
“too expensive”
“and won't get clean after washing anymore”