Keep your humidity consistent and comfortable with the original ResMed HumidAir 11 water chamber for AirSense 11 devices.

Not compatible with AirSense 10/S9. Designed only for the Air11 platform.

• Standard: hand‑wash only; cost‑effective replacement.

Why replace? Even with good cleaning, hard‑water minerals and heat gradually cloud, pit, or warp the tub. A fresh chamber helps maintain stable humidity and reduces leaks, odors, and scale buildup.

Capacity: comparable to Air10 tubs—fill to the max line. Do not overfill.

Care tips

• Empty and air‑dry daily; refill with distilled water for best results.

• Weekly: wash with warm, mild soapy water; rinse well and air‑dry out of direct heat/sunlight.

• Cleanable version: top‑rack dishwasher safe; disassemble before washing.

• Do not use bleach, alcohol, or harsh abrasives.

What’s included

• 1× Water chamber No tubing, filters, or other parts included.

Part numbers

• Standard: 39100

Suggested replacement cadence: every 6 months, or sooner if you see clouding, leaks, cracks, or lingering odors.