You've been told you need PAP therapy for sleep apnoea. Your doctor mentioned CPAP. Someone else mentioned BiPAP. Now you're online trying to work out what the difference is, which one you need, and why the price gap is so large.
This guide gives you a clear, straightforward explanation — from a team of biomedical engineers who work with these machines clinically, not just retail them.
What Is Sleep Apnoea?
Obstructive sleep apnoea (OSA) occurs when the muscles in the throat relax during sleep and partially or completely block the airway. The result is repeated interruptions to breathing — sometimes hundreds of times per night — that fragment sleep, reduce oxygen levels, and over time increase the risk of cardiovascular disease, stroke, and metabolic conditions.
OSA affects an estimated 1 in 5 Australians, with the majority undiagnosed. A sleep study (polysomnography) is required to diagnose OSA and determine its severity.
What Is CPAP?
CPAP stands for Continuous Positive Airway Pressure. It delivers a single, constant pressure of air through a mask throughout the night — enough pressure to keep the airway open and prevent collapse. The pressure setting is determined by your sleep study results and prescribed by your sleep physician.
CPAP is the gold-standard first-line treatment for most OSA patients. It's effective, well-tolerated by the majority of users once they adjust to it, and is the starting point for almost all sleep apnoea therapy in Australia.
What Is BiPAP?
BiPAP stands for Bilevel Positive Airway Pressure. It delivers two different pressures: a higher pressure on inhale (IPAP) and a lower pressure on exhale (EPAP). The pressure difference makes exhaling easier, which some patients find significantly more comfortable than CPAP — particularly at higher prescribed pressures.
BiPAP is not a premium version of CPAP. It's a different therapy mode suited to specific clinical situations.
Who Needs CPAP and Who Needs BiPAP?
Your sleep physician or GP determines this based on your sleep study results, your medical history, and how you respond to initial therapy.
CPAP is typically prescribed for:
- Standard obstructive sleep apnoea (mild, moderate, or severe)
- First-time PAP therapy patients
- Patients comfortable with standard continuous pressure
BiPAP is typically prescribed for:
- Patients who require high CPAP pressures and struggle to exhale
- Central sleep apnoea or complex/mixed apnoea
- COPD with concurrent sleep apnoea (overlap syndrome)
- Patients who have failed CPAP therapy due to expiratory pressure intolerance
- Neuromuscular conditions requiring respiratory support
Do not self-diagnose. Buying a BiPAP without a prescription specifying BiPAP therapy is unlikely to improve your outcomes and may deliver inappropriate therapy pressure. Always confirm the correct device type with your prescribing physician.
The Yuwell BreathCare Range — Which Machine?
Vectr Medical stocks the Yuwell BreathCare range of TGA-approved PAP devices, backed by our biomedical engineering team post-purchase.
Yuwell YH-360 — CPAP ($749)
Fixed-pressure CPAP for standard obstructive sleep apnoea. Single therapy mode, simple to set up, TGA-approved. The entry point for prescribed CPAP therapy. If your prescription is CPAP-only, this is the machine.
Yuwell YH-725 — Multi-mode BiPAP ($949)
Covers CPAP, BiPAP S (spontaneous), BiPAP T (timed), BiPAP ST (spontaneous/timed), and VGPS (volume-guaranteed pressure support) modes. For patients prescribed BiPAP or more complex PAP therapy. Significantly more versatile than the YH-360 — and the right choice if your prescription specifies BiPAP.
Yuwell YH-825 — Flagship BiPAP ($999)
The YH-825 is the flagship BreathCare device, covering the same therapy modes as the YH-725 with advanced pressure management algorithms and enhanced respiratory support capabilities. For complex respiratory therapy requirements under specialist supervision.
What Else Do You Need?
A CPAP or BiPAP machine is only part of the setup. You also need:
- A mask — nasal pillows, nasal mask, or full-face mask. Fit is critical to therapy compliance. The wrong mask is the most common reason patients abandon CPAP. Contact our team for mask compatibility advice for your machine.
- Humidifier chamber — most machines include or support a heated humidifier. Highly recommended, especially in low-humidity climates.
- CPAP tubing — standard or heated.
- Replacement filters — typically cleaned weekly and replaced every 1–3 months.
We're actively expanding our CPAP accessories range. Contact us for advice on compatible consumables for your specific machine.
Why Buy from a Biomedical Engineering Company?
Most CPAP retailers are just that — retailers. Vectr Medical is operated by Nova Biomedical, a NATA-certified biomedical engineering company. We test and calibrate PAP devices for clinical use. When you have a question about pressure settings, device maintenance, or whether your machine is performing correctly, you're asking someone who actually knows.