Difference between a BIPAP and a CPAP
BiPAP vs. CPAP: Understanding the Difference for Better Sleep Apnoea Therapy
Sleep apnea therapy isn’t one-size-fits-all, and understanding your treatment options can make all the difference in achieving restful sleep and better overall health. At Sove CPAP Clinic, we’re here to help you make informed, confident decisions about your care. If you’re exploring the differences between BiPAP and CPAP therapy, this guide is for you.



Choosing the Right Type of CPAP Machine
CPAP: The First-Line Treatment for Obstructive Sleep Apnoea
Continuous Positive Airway Pressure (CPAP) therapy is widely recognised as the gold standard for treating Obstructive Sleep Apnea (OSA), a condition where the airway collapses or becomes blocked during sleep, causing repeated breathing interruptions. CPAP machines work by delivering a consistent, steady stream of pressurised air through a mask that you wear while sleeping. This airflow acts as a pneumatic splint, keeping your airway open and preventing apneas throughout the night.
For most people newly diagnosed with OSA, CPAP is the initial treatment prescribed because it is well-studied, proven to be highly effective, and relatively simple to use. It is particularly suited to those with mild to moderate OSA, although it can also be effective in severe cases. Machines like the ResMed AirSense 10 AutoSet and ResMed AirSense 11 are among the most trusted models, offering advanced comfort features such as automatic pressure adjustments, built-in humidifiers, and app integration for sleep tracking. These devices are engineered for ease of use and compliance, helping patients adapt more smoothly to therapy.
Tips for CPAP Success:
- Mask fit is key: A well-fitted mask reduces leaks, enhances comfort, and ensures effective therapy. Sove offers personalised mask fitting appointments using the latest sizing tools and trial options.
- Use heated humidification: Adding moisture to the airflow helps prevent nasal congestion, dry mouth, and sore throat—common early side effects.
- Consistency matters: Regular use—even on nights when you’re away or feeling well—is essential for long-term improvement. Establish a bedtime routine that includes setting up your CPAP machine.
- Embrace support: Lean on resources like Sove’s therapy review sessions, where clinicians can check your data and offer real-time guidance.
CPAP therapy can transform quality of life by improving sleep architecture, boosting daytime alertness, and reducing the health risks associated with untreated OSA, such as heart disease, stroke, and type 2 diabetes. With the right support, most users adapt to therapy within a few weeks and begin to notice substantial improvements in energy and mood.
BiPAP: Tailored Support for Complex Breathing Needs
Bi-level Positive Airway Pressure (BiPAP or BPAP) therapy is a more advanced form of positive airway pressure therapy that is often used when CPAP is insufficient or poorly tolerated. Unlike CPAP, which maintains a constant pressure, BiPAP machines deliver two separate pressures: Inspiratory Positive Airway Pressure (IPAP) for inhalation and Expiratory Positive Airway Pressure (EPAP) for exhalation. This dual-pressure system makes breathing feel more natural and can be particularly helpful for patients with coexisting respiratory conditions.
BiPAP is often recommended in cases where the patient has:
- Central sleep apnea (CSA): A condition where the brain fails to send proper signals to the muscles controlling breathing.
- Complex sleep apnoea syndrome: A mix of obstructive and central events.
- Chronic obstructive pulmonary disease (COPD), neuromuscular disorders, or obesity hypoventilation syndrome (OHS), where respiratory support must be finely tuned.
- High CPAP pressure intolerance: Some people find it difficult to exhale against high, fixed pressures.
Machines like the ResMed AirCurve 10 BiPAP are leading examples in the BiPAP category. This model offers algorithm-driven pressure adjustments, built-in humidification, and customisable settings to fine-tune therapy. Unlike basic CPAP devices, BiPAP machines often include advanced data monitoring capabilities, which clinicians use to adjust and optimise your therapy.
Tips for BiPAP Users:
- Partner with your sleep clinician: Due to its advanced features and variable pressure settings, BiPAP therapy should always be tailored and regularly reviewed by professionals. Sove offers detailed titration studies and follow-up consultations.
- Make use of technology: Many BiPAP devices link to apps like ResMed’s AirView or myAir, allowing you and your clinician to monitor therapy effectiveness and adherence in real-time.
- Prioritise comfort: The variability in pressure often makes BiPAP more comfortable for users who find fixed pressure settings claustrophobic or difficult to tolerate, especially during long exhalation phases.
- Regular follow-up: As your breathing patterns or health conditions evolve, your BiPAP settings may need adjustment. Sove’s ongoing support includes therapy check-ins, device re-calibration, and troubleshooting.
While BiPAP is not necessary for everyone, it can be a game-changer for those with more complex needs, providing flexible and personalised respiratory support that significantly enhances comfort, sleep continuity, and overall wellbeing.
Choosing Between BiPAP and CPAP: Personalised Therapy Decisions
Choosing the right therapy is not just about the type of machine—it’s about understanding your unique health profile, comfort preferences, and lifestyle. At Sove CPAP Clinic, we take a personalised approach to every treatment plan, ensuring that whether you need CPAP or BiPAP, your therapy fits seamlessly into your life.
Key Considerations:
- Severity and Type of Sleep Apnea: CPAP is ideal for uncomplicated OSA cases. If your sleep study indicates central apnea events or mixed patterns, BiPAP may offer better outcomes.
- Therapy Comfort and Compliance: While many patients do well on CPAP, some find the pressure uncomfortable, particularly during exhalation. BiPAP’s dual-pressure system often makes breathing feel more natural, especially for those who need higher pressures.
- Coexisting Health Conditions: If you have underlying issues like COPD, restrictive lung disease, or neuromuscular problems, BiPAP can offer more tailored support. Our multidisciplinary team collaborates with respiratory specialists to determine the most appropriate device.
- Budget, Coverage and Ongoing Costs: CPAP machines are generally more cost-effective and widely covered by private health funds for standard OSA treatment. BiPAP machines involve a higher initial investment but may be fully or partially covered when clinically indicated. Sove provides guidance on navigating insurance, payment plans, and Health Fund reimbursements.
At Sove, we also offer CPAP trials that allow you to test CPAP and BiPAP machines at home before committing to a purchase. This practical, hands-on experience is invaluable in finding a device that not only meets your medical needs but also fits your daily routine and comfort expectations. Our goal is to empower you with knowledge, support you through every step, and ensure your therapy leads to genuine, lasting health improvements.
ALWAYS FOLLOW THE DIRECTIONS FOR USE. CPAP is used for Obstructive Sleep Apnoea treatment. When considering whether CPAP is right for you, speak to your doctor.
Frequently Asked Questions (FAQ)
Can you switch between CPAP and BiPAP machines? Yes, switching between CPAP and BiPAP is possible, but it should always be guided by a healthcare professional. If your current CPAP therapy isn’t achieving desired results or is causing discomfort, your sleep physician might recommend transitioning to BiPAP after reassessing your condition. Switching may also be necessary if your sleep apnoea becomes more complex over time. At Sove CPAP Clinic, we facilitate machine trials and adjustments, allowing you to test alternative options under expert supervision before making a permanent change.
Why do BiPAP machines cost more than CPAP machines? BiPAP machines come with more advanced technology, including dual-pressure settings, automatic pressure algorithms, and in some models, backup respiratory rates. These features enable BiPAP to support a wider range of respiratory disorders beyond standard OSA. The added complexity, diagnostic tools, and customisation potential increase manufacturing and development costs. However, BiPAP may qualify for coverage under certain health plans if it’s deemed medically necessary. Sove can assist with pre-approval paperwork and financing options to help make your therapy more accessible.
Are BiPAP and CPAP machines different in size? While there are some slight differences, most modern CPAP and BiPAP machines are compact and designed for bedside use. Devices such as the ResMed AirSense 10 (CPAP) and AirCurve 10 VAuto (BiPAP) share similar form factors, with integrated humidifiers and easy-to-read displays. The main differences lie in internal components and user interface, not bulk or portability. Both types are travel-friendly and compatible with travel accessories, power adaptors, and cleaning devices. If you’re planning to travel, Sove can advise on the most portable models and help you plan accordingly.
Do both machines require a prescription?
In Australia, a prescription is not legally required to purchase a CPAP or BiPAP machine, but it is strongly recommended. These devices are classified as medical devices, and selecting the right machine and pressure settings requires clinical expertise. While CPAP machines can technically be bought without a prescription, using one without a proper sleep study and clinical input can lead to ineffective therapy or worsening symptoms.
BiPAP machines, which involve more complex settings and are used for more specialised conditions, should always be initiated under medical supervision.
How do you know if BiPAP or CPAP is working?
Signs that your therapy is working include better sleep quality, reduced snoring, fewer apnea events, increased daytime alertness, and a decrease in related symptoms like headaches or dry mouth.
Most modern machines track therapy data such as usage hours, leak rates, and AHI (Apnoea-Hypopnoea Index). Tools like ResMed’s myAir app or clinician portals allow both you and your healthcare team to monitor this information in real time and conduct periodic therapy reviews.