ResMed AirSense 11 AutoSet CPAP Machine with Integrated Humidifier, Pre-Owned
The ResMed AirSense 11 AutoSet is an auto-adjusting CPAP device for the prescribed treatment of obstructive sleep apnoea. It measures the airway breath by breath and moves the pressure inside the range set by the prescribing clinician, rather than holding one fixed figure all night, and pairs that with an integrated HumidAir 11 humidifier and a colour touchscreen.
This unit is pre-owned. Recorded hours differ from unit to unit across the stock held, so the hours on the machine being sent are read from the device and confirmed before dispatch, and stated on request beforehand. It is supplied with its HumidAir 11 humidifier, travel bag and 65 W power supply, together with a new water chamber and a new standard air tube. A mask, heated tubing, filters and cleaning products are bought separately.
What is included
| Item | Detail | Condition |
|---|---|---|
| AirSense 11 AutoSet device | Auto-adjusting CPAP unit with the HumidAir 11 humidifier fitted | USED |
| Water chamber | HumidAir 11 tub, fresh and unused | NEW |
| Air tubing | Standard unheated hose, fresh and unused | NEW |
| Power supply | 65 W supply unit and mains lead | USED |
| Travel bag | Carry bag sized for the device, humidifier and tubing | USED |
What is not included
| Item | Detail | Status |
|---|---|---|
| Mask and headgear | Chosen to fit the wearer and the prescribed pressure range | SOLD SEPARATELY |
| Air filter | Disposable inlet filter, fitted fresh for a new wearer | ADD-ON |
| Heated air tubing | ClimateLineAir 11 tubing, used with Climate Control | SOLD SEPARATELY |
| Cleaning products | CPAP cleaning solutions and wipes | SOLD SEPARATELY |
| Distilled water | Used to fill the humidifier chamber | NOT INCLUDED |
Checked before dispatch
- Powered on and run, with pressure delivery, blower and humidifier heating observed.
- Recorded hours read from the device and noted against the unit before it is packed.
- Touchscreen, menu navigation and comfort settings checked.
- Air path, inlet and outlet inspected, and the exterior cleaned and disinfected.
- A new water chamber and a new air tube are supplied, so nothing in the humidified air path passes from a previous wearer.
These are in-house workshop checks. Damaged or non-working items are not dispatched. A full engineer service and calibration is not included unless this listing states the unit has been serviced. Fitting a fresh filter and mask, and setting the prescribed pressure range, remain with the wearer and the clinical service looking after them.
The pressure range is set by the prescribing clinical service
- The minimum and maximum pressures follow a sleep study or clinical assessment and are entered by the responsible clinical service.
- Settings are never carried over from a previous wearer. Any range held in the device from earlier use is confirmed or changed before therapy begins.
- A fresh air filter and a mask are fitted before first use.
What auto-adjusting therapy actually changes
The pressure a person needs is not one number. It rises when they roll onto their back, when they enter REM sleep, after alcohol, and during a cold, and it falls again in between. A fixed pressure device has to be set high enough to cover the worst part of the night, which means the rest of the night is spent at more pressure than the airway requires. The AutoSet algorithm measures flow limitation, snore and apnoea breath by breath and moves the pressure inside the prescribed range, so the wearer meets the pressure the airway needs at that moment. In practice that tends to lower the average pressure across the night, and average pressure is closely tied to mask leak, aerophagia and whether somebody keeps using the machine at all.
The device also carries AutoRamp, which starts low and waits until it detects sleep before building to therapy level, and Expiratory Pressure Relief, which eases the pressure back as the wearer breathes out. Both address the same underlying problem: the first hour with a mask is when most people decide whether they will persist, and it is the hour when full therapy pressure feels least tolerable. Integrated humidification sits alongside them, since dry nasal passages and a dry mouth are the other common early reason for abandoning therapy.
Two limits are worth stating before purchase. Auto-adjustment is not a substitute for a prescription: the range still comes from a clinician, and a device set to a wide default range is not the same as one set to the range someone was titrated for. And this is the wrong device for two groups, those prescribed a single fixed pressure, who gain nothing over the Elite model at lower cost, and anyone who needs separate inspiratory and expiratory pressures, which is bi-level territory rather than CPAP. The unit runs from mains power with no internal battery, so it travels in its bag rather than running unplugged.
Key features
Technical specifications
| Manufacturer | ResMed |
| Model | AirSense 11 AutoSet |
| Device type | Auto-adjusting CPAP |
| Condition | Pre-owned, recorded hours confirmed per unit |
| Pressure range | 4 to 20 cm H2O |
| Comfort settings | Expiratory Pressure Relief, AutoRamp |
| Humidification | Integrated HumidAir 11 heated humidifier, pre-owned |
| Water chamber supplied | HumidAir 11 tub, new |
| Tubing supplied | Standard unheated air tubing, new |
| Heated tubing option | ClimateLineAir 11, sold separately |
| Display | Colour touchscreen |
| Filters | Disposable inlet filter, sold separately |
| Weight | 1130 g |
| Dimensions | 138.5 x 259.4 x 94.5 mm |
| Power supply | 65 W unit, 100 to 240 V AC, 50 to 60 Hz |
| App support | myAir, UK and EU |
Specification limited to what is confirmed
- Recorded hours vary between units, so no figure is published here. The hours on a specific unit, along with its serial number, manufacture date and software version, are read from the device and given on request.
- Sound level, humidifier capacity and the axis order of the dimensions above are not confirmed and have been left as supplied rather than estimated.
- Whether the AutoSet for Her response is enabled on this individual unit, and how cellular data behaves on this regional variant, can be confirmed on request.
Condition and history
Routine care schedule
| Component | Interval |
|---|---|
| Air inlet filter | Renew every 6 months, or sooner where deposits are visible |
| Air tubing | Renew every 1 to 3 months |
| Water chamber | Renew every 6 to 12 months |
| Mask cushion | Renew as required, following the mask instructions for use |
| Water in the chamber | Emptied daily and refilled with distilled water |
Intervals follow manufacturer guidance and are shortened where the device is used in a shared or institutional setting.
Documents
- AirSense 11 user guide, UK and EU
- Mask and device compatibility list
- Air 11 air tubing compliance guide
- Data management and device compatibility list
- Air 11 cellular information guide
- Air 11 privacy notice
- AirSense 11 AutoSet declaration of conformity
- AirSense 11 radio equipment conformity statement
- Manufacturer quality management system certificate
- Electromagnetic emissions and immunity tables
