The ResMed HumidAir 11 Cleanable Water Tub is exclusively made for the ResMed AirSense 11 CPAP Machine. It holds 380 mL of water so that CPAP patients will not have to wake up in the middle of the night and refill it. Please note, it is recommended to use distilled water in this water tub to avoid the build-up of calcium deposits and bacteria.

Maintenance - ResMed HumidAir 11 Cleanable Water Tub

This product is washer-safe and can be cleaned on the top rack. Additionally, here are some other guidelines when using this water chamber:

Only fill the water to the MAX line as filling it higher could damage both the humidifier and the machine.

Use only room-temperature distilled water when filling the tank.

Do not fill the water tub when it is still inside the humidifier.

Do not turn the humidifier on when the water tub is not in it. 

Do not move the humidifier if there is water still in the tank.