The Top 5 CPAP Machines
There is no single best CPAP machine — there's the one that fits how you sleep, how much you travel and what you'll tolerate wearing every night. These five cover the range, from full-featured bedside units to pocket-sized travel machines.
Five machines, what each does best, and the questions that narrow the choice down to one.
Sleep apnea affects millions of people, and left untreated it's associated with high blood pressure, cardiovascular disease and stroke. CPAP therapy remains the standard treatment — a steady stream of pressurised air that holds the airway open through the night.
Machines have improved considerably: smaller, quieter, and with comfort features that make the difference between someone who sticks with therapy and someone who abandons it in the first month. Here's how the five leading options compare.
1. ResMed AirSense 11
The most technically capable of the five. The AirSense 11 pairs an updated AutoSet algorithm with a colour touchscreen and cloud-based data tracking through the myAir app — which matters more than it sounds, because seeing your own nightly data is one of the more reliable predictors of sticking with therapy.
- Key features: updated AutoSet algorithm, 4.3″ colour touchscreen, integrated heated humidifier, cellular and Bluetooth connectivity.
- Best for: people who want detailed data on their therapy and the most current feature set.
- Trade-off: the highest price of the five, and it uses different filters and tubing from the AirSense 10 — older accessories won't fit.
2. ResMed AirSense 10 Series
The machine that defined the category, and still a sound choice. Quiet, straightforward, with auto-adjusting pressure that's been refined over years of use. Where the AirSense 11 adds a touchscreen and newer connectivity, the AirSense 10 delivers the same core therapy through a simpler interface — which some users genuinely prefer.
- Key features: AutoSet algorithm, AutoRamp for gentler sleep onset, integrated HumidAir humidifier, data tracking.
- Best for: anyone wanting proven performance without paying for the newest interface.
- Worth knowing: the Card-to-Cloud (C2C) variant costs less but has no cellular modem, so data moves by SD card rather than automatically.
3. 3B Medical Luna G3
The value option. The Luna G3 covers the essentials — auto-adjusting pressure, integrated humidification, data tracking — at a noticeably lower price than the ResMed machines. What you give up is refinement rather than function: the algorithm is less sophisticated and the software ecosystem is smaller.
- Key features: auto-adjusting pressure, integrated humidifier, data tracking.
- Best for: first-time users and anyone who wants dependable therapy without a premium price.
- Trade-off: fewer comfort refinements and a less developed app compared with ResMed.
4. Breas Z2 Auto
A travel machine that doesn't feel like a compromise. The Z2 Auto is small and quiet, with Breas's 'Breathe Easy' pressure relief smoothing the transition between inhalation and exhalation. It's the middle ground between a full bedside unit and something genuinely pocket-sized.
- Key features: compact form factor, quiet operation, 'Breathe Easy' pressure relief, auto-adjusting pressure.
- Best for: regular travellers who want one machine for home and away rather than two.
- Worth knowing: humidification works through a waterless HME rather than a heated water chamber.
5. ResMed AirMini
The smallest of the five by a clear margin — it fits in a palm and weighs under 300 grams. Despite the size, it runs the same therapy algorithms as the bedside AirSense machines, with HumidX waterless humidification removing the need for distilled water entirely.
- Key features: pocket-sized design, AirMini app for settings, HumidX waterless humidification, FAA-approved for flights.
- Best for: frequent flyers and anyone who needs therapy to fit in carry-on luggage.
- Trade-off: requires AirMini-specific mask connectors, and it's a travel machine rather than a full-time replacement for a bedside unit.
How to Choose
The best CPAP machine is the one you'll actually use every night. Five questions narrow it down:
How often do you travel?
Occasional trips don't justify a travel machine. Regular travel does — and the AirMini or Z2 Auto will spare you repacking a bedside unit each time.
How sensitive are you to noise?
Modern machines run around 27–30 dB, which is quiet enough for most bedrooms. If you or your partner wake easily, it's still worth checking the specific figure.
Do you need humidification?
Dry mouth and nasal irritation are the most common reasons people stop therapy. A heated humidifier addresses both; waterless systems handle it more compactly for travel.
Will you track your data?
If you'll check a nightly score and act on it, connected machines are worth the premium. If you won't, you're paying for a feature you'll never open.
What's your budget?
The spread between the Luna G3 and the AirSense 11 is substantial. All five deliver effective therapy — the difference is in comfort and convenience, not in whether treatment works.
What does your prescription say?
This one overrides the rest. If you've been prescribed BiLevel therapy, none of these five apply — you need an AirCurve or equivalent instead.
One thing worth more than the machine: the mask. Every option here delivers effective therapy, but a mask that leaks or presses will undermine any of them. If you're choosing between spending more on the machine or more on getting the mask right, choose the mask.
Frequently Asked Questions
Which CPAP machine is best overall?
Which is best for side sleepers?
Which is best for beginners?
Which is the quietest?
Are there genuinely affordable options?
Can I use a travel machine as my only CPAP?
Talk to Your Doctor First
Your doctor or sleep specialist is the right starting point. They can assess what your sleep study actually shows, confirm whether CPAP is the correct therapy at all, and set the pressure range your machine will work within.
Once that's settled, the choice between these five comes down to comfort, portability and budget — and any of them will do the clinical job properly.
Please note: this guide is for information and is not medical advice. CPAP therapy requires a diagnosis and prescribed pressure settings from a doctor or sleep specialist. If you suspect you have sleep apnea, arrange a sleep study before buying equipment — a machine without correct settings won't treat the condition, and the wrong therapy mode can make matters worse.
