APAP Machines Explained: APAP vs CPAP

An APAP machine (Auto-adjusting Positive Airway Pressure) is a sleep apnea device that automatically raises or lowers its pressure throughout the night, instead of holding one fixed setting like a standard CPAP machine. Both treat obstructive sleep apnea by keeping your airway open, the difference is how the pressure behaves while you sleep, not what the machine is treating.

What Is an APAP Machine?

APAP stands for Auto-adjusting Positive Airway Pressure. Instead of delivering a single pressure all night, an APAP machine uses built-in sensors to detect resistance, snoring, or airway narrowing breath by breath, and adjusts the pressure up or down in real time to match what you actually need at that moment.

This matters because your pressure needs aren't necessarily constant. They can shift with sleep position (back sleeping often needs more pressure than side sleeping), alcohol, congestion, weight changes, or even the time of night. A fixed-pressure CPAP machine delivers the same setting regardless, usually calculated to cover your worst-case need, which means it may be higher than necessary for most of the night.

Broxtal's Auto-S CPAP/APAP Machine e YA LING Smart CPAP/APAP Machine both include auto-adjusting APAP mode alongside a standard fixed CPAP setting, so you can use either depending on what your clinician recommends or what feels more comfortable.

CPAP vs APAP: What's the Mode Difference?

Both modes treat the same underlying problem, an airway that narrows or collapses during sleep, they just deliver the pressure differently. For a deeper look at where BiPAP fits into this picture too, see our guide CPAP vs. BiPAP: Quando as utilizar no tratamento da apneia do sono.

Can One Machine Do Both CPAP and APAP?

Yes, and this is worth knowing before you buy two separate devices. Several modern machines, including Broxtal's Auto-S and YA LING models, let you switch between a fixed CPAP setting and auto-adjusting APAP mode from the same unit. This is useful in a few real situations:

• You've just started therapy and want to try APAP first to find your natural pressure range, then lock in a fixed CPAP setting once it's confirmed
• Your clinician recommends a fixed pressure for consistency, but you want the option to switch to APAP on nights when you know your needs will differ, travel, illness, or alcohol, for example
• You're comparing the two modes for comfort before committing to one long-term

Practically, this means you don't need to choose CPAP or APAP as a permanent, irreversible decision. A dual-mode machine gives you room to adjust as you learn more about your own sleep apnea and what actually helps.

Are APAP Machines More Expensive?

Not really, and it's worth being straightforward about this: in Broxtal's range, auto-adjusting pressure isn't sold as a separate premium tier. Most of our CPAP machines already include APAP mode as standard, so you're not paying extra specifically for the auto-adjusting feature. What actually drives the price difference between models is everything else around it, humidifier, noise level, SD card sleep tracking, app connectivity, and build quality.

Prices correct at time of writing and subject to change. Always check individual product pages for current live pricing.

Both machines above ship with free UK delivery and include the humidifier as standard, not as an add-on, so the price you see is the price you pay.

Who Should Use APAP?

APAP tends to suit you particularly well if:

• Your pressure needs change with sleep position, weight, alcohol, or congestion
• You've been recently diagnosed and don't yet have a confirmed fixed-pressure setting
• You've found a fixed CPAP pressure uncomfortable, either too strong at some points in the night or not quite enough at others
• You travel or your routine varies, and you want one device that adapts rather than needing pressure adjusted manually

A fixed CPAP machine can still be the right call if your pressure need is well established and stable, there's nothing wrong with simplicity when it's working. If you're unsure which fits your situation, our guide Do I Know If I Need CPAP or BiPAP? covers the related decision between CPAP and BiPAP, and the same reasoning about pressure comfort applies when weighing APAP against a fixed setting.

Is It Safe to Buy an APAP Machine Without a Prescription?

Yes. Broxtal's CPAP/APAP machines are sold as certified sleep therapy devices and can be purchased directly, without a GP referral or prescription. Each product page states its certification, pressure range, and noise level. That said, sleep apnea is a medical condition, and we'd always recommend confirming your diagnosis and pressure range with a doctor or sleep clinic first, an APAP machine's auto-adjusting range still needs to be set sensibly for your needs rather than left to guesswork. If you've never used positive airway pressure therapy before, a sleep study or home sleep test is the most reliable way to confirm sleep apnea is actually the cause of your symptoms, rather than something else entirely, before you invest in a machine.

Perguntas frequentes

Explore More Guides on Sleep Apnea Therapy