Overall RatingNo Ratings
FeaturesNo Ratings
DesignNo Ratings
PerformanceNo Ratings

ResMed AutoSet S9 APAP sleep device

I borrowed a ResMed AutoSet S9 Automatic Positive Airway Pressure (APAP) device for about 20 days from my pharmacy after having borrowed a Philips Respironics System One for a similar period prior to buying one.

ResMed AutoSet S9

Sleep Apnea Devices

All obstructive sleep apnea/apnoea (OSA) devices deliver pressurised air into your airways through a mask, so why would one differ from another from the patient’s viewpoint? The main difference between Continuous Positive Airway Pressure (CPAP) and Automatic Positive Airway Pressure (APAP) devices is the price and the fact that the latter can vary the pressure.

APAP devices have a ramp-up time when they start at a low, gentle pressure and a few minutes later they have slowly increased to maximum pressure. All pressure settings are set by a trained professional at the direction of the sleep specialist following two overnight sessions in a sleep clinic.

I was allegedly 😉 a very loud snorer for many years and since this alleged snoring never made me feel that my sleep quality was poor, I delayed getting a proper diagnosis. It was bad news – I was having 55 apneas an hour. Hence the need to buy a CPAP or APAP device.

ResMed S9 AutoSet

The ResMed S9 AutoSet and its matching H5i humidifier come in a slim bag that can be mistaken for a laptop at airport security checkpoints. It was swabbed more than once. Its black colour makes it invisible in the boot/trunk of a rental car – I left it behind at Orlando International (MCO) and nearly missed our flight to LAX until National found it.

The S9 is attractive and will not spoil your bedroom decor. You get two hoses – one is heated and the other is plain. The power supply is rather large. The colour display is a delight to use and is intuitive.

The H5i humidifier that I had was the one with a cleanable water container – you can also get the model with a throwaway container (after about six months of use). In Florida the water quality is poor and I needed to wash the water container and tubes every night.

S9 and H5i

S9 In Use

I have to confess that I had to fight with the device each night. I was overseas on holidays and needed good sleep to be able to tackle the theme parks. My main issue was the “attack profile” of the ramp-up sequence after I had woken up in the middle of the night. It seemed very strong and once my nasal pillow mask started slipping (I have an oily face), the pressure made it hard to avoid leaks. It is very disconcerting having a cold blast of air on your face. So I had to remove the device and snore the rest of the night.

I admit that if I had been at home I could have visited the pharmacy to see if something could be adjusted, so please look for other opinions from users before deciding which model to buy. After I returned to Australia I bought a Philips Respironics System One, which I have reviewed here. It has a much gentler ramp-up sequence and is less prone to leaks.

Ash Nallawalla

Ash Nallawalla reviews products for many publications, notably PC Update. He writes a monthly column for APC Magazine, the largest consumer printed PC magazine in Australia.