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ResMed S9 AutoSet™ CPAP Machine w/H5i™ Humidifier


4.63 out of 5

ResMed S9 AutoSet™ CPAP Machine w/H5i™ Humidifier offers features like Sleek profile design, Climate Control, Quite 24 dBA, EPR, Easy Breath Technology, CSA detection and compensation, Onboard and removable data collection.

SKU: 36015.



  • Track your progress with ResMed’s SleepSeeker!
  • Sleek, low profile design
  • Climate Control
  • Quite 24 dBA!
  • EPR, Easy Breath Technology
  • Meets the FAA requirements for all phases of air travel
  • CSA (Central Sleep Apnea) detection and compensation
  • Onboard and removable data collection
  • Automatic leak compensation

The ResMed S9 series offers an intuitive, colorful, and stylish look. With four clearly marked buttons and a large color display, adjusting settings has never been easier. A large push dial allows you to scroll through screens and make changes easily. The large color screen allows you know where you are scrolling and what setting you are adjusting by changing colors. The info button allows you to view compliance data and reports with a single push, and the large start button offers an easy one touch start. The sleek low profile design makes your CPAP look less like a sterile medical device and more like a standard bedside clock radio, further encouraging you to be consistent in using your therapy.

A new feature for the S9 series CPAP machines is the H5i™ humidifier. This humidifier adapts to the specific environment of your bedroom and adjusts the heat and humidification, so you receive the exact heat and humidification that you select on your machine

The S9 AutoSet™ CPAP machines combines an intelligent algorithm with Easy-Breathe expiratory pressure relief (EPR) to dynamically adjust pressure for maximum comfort. Using ResMed’s time-tested APAP technology, AutoSet™ continually monitors breathing, adapting breath by breath to always deliver the lowest therapeutic pressure, improving comfort and sleep. The S9’s enhanced AutoSet™ algorithm now differentiates between obstructive and central sleep apneas (CSA) and responds appropriately. You can be confident that you’re always receiving optimal therapy at the lowest, most comfortable pressure.

ResMed introduces its new SlimLine™ Tubing with the S9 series machines. Exclusive to ResMed the SlimLine™ Tubing is 40% lighter, 20% thinner, and takes up 35% less space. Providing more flexibility and less drag with light weight materials, the SlimLine™ Tubing promises to be a favorite among CPAP users. In addition to this, ResMed introduces a smart-fit cuff design that makes it easier to attach and remove the tube from your mask and machine.

By enhancing the Easy-Breath motor with axial air-flow, foam, and noise isolating materials, ResMed has created an ultra quite CPAP machine. Measured at 24dBA (that’s no louder than normal breathing!), you or your bed partner will never be awoken by your noisy CPAP machine.

Both the S9 AutoSet™ & the S9 Elite™ have CSA and OSA detection. The enhanced Easy-Breathe motor features small diameter lightweight impellers that provide lower inertia. This enables the motor to track your normal breathing waveform and produce the small oscillations in pressure required to detect CSAs. It uses the forced oscillation technique (FOT) to determine the state of the airway during an apnea. When an apnea is detected, small oscillations are added to the pressure to measure airway patency. The CSA algorithm uses the resulting flow and pressure to measure airway patency and differentiate central and obstructive events. Your ResMed S9 AutoSet™ w/H5i™ Humidifier has the ability to compensate for these events with its enhanced autoset algorithm.

All the S9 series machines come with onboard and removable data storage. With a touch of the info button you will see a snapshot of your therapy. Data is stored on board for up to 365 days and includes average usage, used hours, days used, run hours, pressures, leak and AHI information. The removable SD card provides detailed graphical data and high resolution flow data that your physician can read.

By reducing pressure during exhalation, the patented EPR Easy-Breathe technology makes the adjustment to CPAP therapy easier and more natural for the user.

Do you ever have trouble knowing if your mask has a sufficient seal? With the Mask Fit option, your machine will run a quick diagnostic to let you know if your seal is sufficient. Simply select what type of mask you are using (Full Face, Nasal, or Nasal Pillows) put your mask on, from the Home screen push and hold the dial for three seconds. Your machine will perform a short 3 minute diagnostic and you will see on the display an “Adjust” or “Good” indicator, letting you know if you have a good fit.

Weight 3.35 lbs

7.25″ x 11.25″ x 3.75″

Included In Box

CPAP machine, H5i humidifier, SlimLine Tubing, carrying bag, user manuals, SD data card

Prescription Required


Data Card




Machine Type


Noise Level

24 dB


2 years

Pressure Range

4-20 cm/H2O

Software Available


Can Use A Battery


Exhalation Relief


Altitude Adjustment


Passover Cool Humidifier


Product Condition



0-45 min. (5 min. increments)

110 Voltage


Integrated Battery


Mask Off Alert


220 Voltage



Product Documents

Video Resources

Reviews (8)

8 reviews for ResMed S9 AutoSet™ CPAP Machine w/H5i™ Humidifier

  1. Chris
    5 out of 5


    Glad my doctor chose this machine. Small and quiet. I travel often and this machine is easily portable.

  2. Nathan
    4 out of 5


    This is my 4th machine and so far I am happy. Very quiet overall, except for this low moan. Other than that I am happy, is very comfortable to use.

  3. Daniel
    5 out of 5


    I barely hear the machine, the light sound I do hear is not bad at all. Very much satisfied.

  4. Ian
    5 out of 5


    Quiet and great price it is worth every buck. I have to say is easy to maintain and use, had no problem is a great machine. Recommended!

  5. Camille
    4 out of 5


    Great machine. I was a bit hesitante to try it since I kept reading reviews that it had a little annoying noise and I was afraid would not be able to rest. I am super happy, I hardly hear the noise and the machine is extremly confortable.

  6. Austin
    5 out of 5


    Machine is very quiet

  7. Tyler
    5 out of 5


    Liking the machine. I did some adjustments to hide. I drilled a doorknob hole in the back of my night stand, bought an extra-long hose and extension cord. Now is hidden and silent.

  8. Mark
    4 out of 5


    Great machine noise is tolerable but I sometimes awake and I’m still outta breath don’t know if I have it set correctly.. Any advice is welcome

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