⚠ Before you buy — is ST what your prescription says?
The AirCurve 10 ST is the bilevel that will breathe for you. In ST and T modes it watches the clock: if a breath doesn’t arrive when it should, the machine delivers one. That timed backup rate is the entire reason this device costs more than the VAuto.
This is the most expensive sleep machine we sell, and we would rather you buy the cheaper one if that is what your doctor wrote. Read us your prescription at (786) 755-8063 and we’ll tell you which one it is.
The AirCurve 10 ST (part 37306) is a bilevel device with a timed backup rate, indicated for obstructive sleep apnea in patients over 66 lb. It runs CPAP, S, ST and T modes — 3–25 cmH₂O in S/ST/T and 4–20 cmH₂O in CPAP — so in ST and T it delivers a breath if you don’t take one on your own. It accepts up to 15 L/min of supplemental oxygen (the AirCurve 10 VAuto tops out at 4), includes an integrated heated HumidAir humidifier, works with ClimateLineAir tubing, runs at about 27 dBA and weighs 2.75 lb. A prescription is required, and the settings must come from your clinician. It ships new in box from Doral, FL with the full 2-year manufacturer warranty, free U.S. shipping over $99, Affirm financing, and any compatible mask at 10% off.
VAuto or ST — the difference is one word on your prescription
| AirCurve 10 ST — this machine | AirCurve 10 VAuto | ASV | |
|---|---|---|---|
| If you stop breathing | It delivers the breath for you | It waits for you | It detects and supports each missing breath |
| Backup rate | Yes — ST and T modes | No | Not a fixed rate; adapts continuously |
| Modes | CPAP · S · ST · T | VAuto · S · CPAP | ASV · ASVAuto |
| Range | S/ST/T 3–25 cmH₂O | VAuto 4–25 cmH₂O | Set by your clinician |
| Supplemental oxygen | Up to 15 L/min | Up to 4 L/min | Ask us |
| Prescribed for | Obstructive apnea, when breaths must be guaranteed | Obstructive apnea needing support | Central & mixed apnea |
| Price | Highest of the three bilevels | Lower | Higher |
Quick pick: look for a number in breaths per minute on your prescription. If it’s there, you need the ST. If it isn’t, the VAuto does the same therapy for a lot less — and we sell that one too.
AirCurve 10 ST — specs at a glance
What’s in the box
The AirCurve 10 ST ships complete and new in box, with the humidifier already built in.
AirCurve 10 ST device
Part 37306, new in box
HumidAir humidifier tub
Integrated humidification
Standard air tubing
Heated ClimateLineAir available separately
Air filter
Installed and ready
Power supply + cord
Plug in and go
User guide
Setup guided on screen
2-year manufacturer warranty
Full factory coverage
Genuine original equipment
New in box, not refurbished.
2-year manufacturer warranty
Full factory coverage from the day you buy.
We check the prescription first
On a $2,395 machine we make sure it is the one you were actually prescribed.
U.S.-based support
Setup help from our own team in Doral, FL.
Frequently asked questions
What does the “backup rate” actually do?
In ST and T modes the machine expects a breath every so many seconds. If that breath doesn’t come, it delivers one for you at the pressure your clinician set. A VAuto never does that — it responds to breaths you take. If your prescription sets a rate in breaths per minute, that setting only exists on a machine like this one.
How do I know if I need the ST instead of the VAuto?
Look at what your clinician wrote. Words like ST, T, backup rate, respiratory rate or a number followed by bpm point here. Two pressures alone — “IPAP 20 / EPAP 12” — usually point to the VAuto, which costs considerably less. Read it to us and we’ll tell you honestly.
Why does it cost more than the other bilevels?
Because of the backup rate and the higher oxygen limit, not because of the brand or the box. It is the same genuine device, new, with the same 2-year manufacturer warranty and the same part number, 37306, wherever you buy it. If your prescription doesn’t call for those two things, we’d rather sell you the cheaper machine.
Can I use oxygen with it?
Yes — up to 15 L/min in CPAP, S, ST and T modes. That is nearly four times what the AirCurve 10 VAuto accepts, and it is one of the common reasons this model gets prescribed. Turn the machine on and let the air flow before opening the oxygen; close the oxygen first when you finish.
Do I need a prescription?
Yes, and it matters more here than on a plain CPAP: the backup rate, the two pressures and the timing all come from your clinician. Send it to us and we set the device to those numbers at no extra cost.
Does it come with a mask?
No — masks are personal and sold separately. Add any compatible mask here and take 10% off that mask. ST pressures are usually high, so mouth leak breaks the therapy; most ST users end up in a full face mask.
Can I travel or fly with it?
It’s a home machine with a humidifier, but it is airline-friendly and fits in a carry-on — PAP devices don’t count toward your carry-on limit on U.S. airlines. Empty the humidifier before you fly, and take the power supply in the cabin with you.
Before you spend $2,395, let us read your prescription.
Tell us what it says. If the ST is what you need, we’ll set it up and help you pick the mask. If the VAuto is what you need, we’ll tell you that instead.

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