Auto CPAP Machines
An auto-adjusting CPAP, usually called an APAP, changes pressure breath by breath within the range your doctor prescribes, instead of holding one fixed setting all night. Most people find that more comfortable than a single fixed pressure, which is why auto machines are the standard recommendation for most new CPAP users today.
We carry ResMed's AirSense 10 and AirSense 11, plus ReactHealth's Luna G3. Filter by price or by what matters most to you, then take your pick: every machine here is a prescription device. Upload yours at checkout, or send it afterward, your order is held, not cancelled.
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Most Popular
ResMed AirSense 11 AutoSet CPAP
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React Health Luna G3 Auto CPAP
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Frequently Asked Questions
What's the difference between a CPAP and an "auto" or APAP machine?
A standard CPAP holds one fixed pressure all night. An auto machine, sometimes called an APAP, adjusts continuously within the range your doctor sets, giving you more air when you need it and easing off when you don't. Many people find the auto version more comfortable, especially early on, because it isn't pushing full pressure at you while you're still falling asleep. Every machine on this page is auto-adjusting.
Do I need a prescription to buy a CPAP machine?
Yes, CPAP machines are prescription devices. You can upload your prescription at checkout.
Can I use my HSA or FSA card?
Yes, CPAP machines are eligible expenses, and you can pay with an HSA or FSA card at checkout the same as any other card. We don't bill insurance directly, so if you're looking to submit for reimbursement, your prescription plus our receipt is what your plan will ask for.
AirSense 10 or AirSense 11: which one?
Both are excellent ResMed auto machines and treat the same clinically. If you prefer a newer, sleeker machine with a touchscreen and a polished app, go with the AirSense 11. If you want the proven workhorse and don't particularly care about the screen, the 10 is still a fantastic machine.
Which masks work with which machine?
For a home machine like the AirSense 10, AirSense 11, or Luna G3, just about any mask works. They all use standard tubing, so the connection is universal, and your mask choice comes down to your face and how you breathe, not the machine. Travel machines are the exception: the AirMini connects through a specific adapter, so it's the one case where the machine and mask have to be matched. If you're choosing a mask, our fit quiz is the fastest way to find yours.
How loud are these at night?
Quiet, modern auto machines are close to whisper-level at normal pressures, and the sound is a smooth airflow rather than a motor. Most people find their partner's reaction is more about the mask seal than the machine itself. If noise is your main worry, that's worth a quick call before you pick.
Do they come with a humidifier?
Every machine in this collection has a built-in heated humidifier and water chamber. Humidification is what stops the dry mouth, dry nose, and morning congestion that make people quit therapy, so it matters more than it sounds. You fill the tank, and the machine warms the air on its way to you.
Do I need to buy a mask separately?
Yes, unless the listing says it's a bundle. The machine and the mask are chosen separately because the mask is the personal part: it's fitted to your face and how you breathe, while the machine is the same for everyone on your prescription. If you're not sure which mask suits you, our mask fit quiz is the fastest way to narrow it down.