CPAP vs BiPAP: Which Machine Do You Actually Need?
5 min read
Both deliver pressurised air, but they solve different problems. Here's a clear comparison for patients and caregivers.
The core difference
A CPAP delivers one constant pressure throughout the breathing cycle. A BiPAP delivers two — a higher pressure when you inhale (IPAP) and a lower one when you exhale (EPAP), making breathing out much easier.
When CPAP is enough
For most people with straightforward obstructive sleep apnea, CPAP or auto-CPAP is the first-line therapy and is significantly more affordable.
When BiPAP is prescribed
BiPAP is used for COPD with carbon dioxide retention, obesity hypoventilation, neuromuscular weakness, central or complex apnea, and patients who cannot tolerate high CPAP pressures.
Comfort and cost
BiPAP machines cost substantially more to buy and rent. Never switch between the two without your physician's advice — pressure settings must always follow a prescription.
Try before you buy
Renting either machine for two to four weeks is the simplest way to check mask comfort, humidification needs and therapy compliance before committing to a purchase.
Need help with this at home?
VRHealthCare provides home sleep studies, CPAP rental and oxygen concentrator rental at your doorstep with fast delivery, 24×7.