Philips-Respironics also listened to user feedback when designing the System One Heated Humidifier for the Respironics CPAP and BiPAP. A cleverly designed water chamber works with a built in Dry Box to virtually eliminate water getting into the machine during normal use. Even with a water chamber filled to the FULL line, the machine can be tilted and even turned upside down without leaking water back into the unit*.

* PLEASE NOTE: ALWAYS drain your water chamber completely when transporting or moving your machine.