Some people can experience a sore nose, throat and mouth dryness and nasal congestion when using BiPAP. If this is the case then a humidifier (water chamber) can be added to your BiPAP machine, once prescribed by your consultant.
A humidifier will add some heat and moisture to the air that you breathe and can make the NIV therapy more comfortable and tolerable.
Warning
After using your humidifier, allow the humidifier hot metal plate to cool for at least 15 minutes before removing the humidifier water chamber from the unit.