CPAP vs BiPAP: what's the difference?
Magkaiba ba talaga, o marketing lang? A clear, plain-language comparison, and who each machine is actually for.
The short version: CPAP gives one steady pressure the whole night. BiPAP gives two: a higher pressure when you breathe in and a lower one when you breathe out. CPAP is the usual first choice for obstructive sleep apnea; BiPAP is reserved for specific situations a clinician identifies. Neither is "better"; they're built for different needs.
How CPAP works
CPAP stands for Continuous Positive Airway Pressure. It sends a constant, gentle stream of air through a mask to act like a splint, keeping the airway open so it can't collapse during sleep. Most people with obstructive sleep apnea do well on CPAP. A common, more comfortable variant is APAP (auto-adjusting CPAP), which moves the pressure up and down automatically within a set range as your needs change through the night.
How BiPAP works
BiPAP (also written BiLevel or BPAP) stands for Bilevel Positive Airway Pressure. It uses two pressures: a higher inhale pressure to hold the airway open, and a lower exhale pressure so breathing out feels easier. That two-level support helps people who need higher pressures or who struggle to exhale against a single fixed CPAP pressure.
CPAP vs BiPAP at a glance
| CPAP / APAP | BiPAP | |
|---|---|---|
| Pressure | One level (APAP auto-adjusts within a range) | Two levels: higher in, lower out |
| Usually for | Most obstructive sleep apnea | Higher-pressure needs, trouble exhaling, certain breathing conditions |
| Exhaling feels | Against a steady pressure (comfort features help) | Easier, against a lower pressure |
| Typical PH price | ~₱40,000 to ₱100,000 | ~₱90,000 to ₱140,000+ |
| Chosen by | A licensed RT and your doctor, based on a sleep study (not by self-selection) | |
So which one do you need?
For the majority of people with obstructive sleep apnea, CPAP or APAP is the right tool. BiPAP is matched to specific clinical reasons, not to a bigger budget. The honest answer to "which is better" is "which one fits your sleep study and your health," and that's exactly what a licensed RT helps you sort out before any money changes hands. For what these cost here, see our CPAP price guide for the Philippines.
How Respyre helps you choose
On a free teleconsult, a licensed respiratory therapist reviews your sleep-study results (or helps you arrange testing first), explains the options in plain terms, and recommends the device that genuinely fits, including telling you when the simpler, cheaper CPAP is all you need. Then we set it up at home and follow through. We sell breathing better, not machines.