This 380ml humidifier water tub is the replacement chamber for your ResMed AirSense 11 or AirCurve 11. Lightweight and durable, it's easy to disassemble for thorough cleaning — extending the life of your humidification setup.
Compatible with the ResMed AirSense 11 (CPAP) and AirCurve 11 (BiPAP). Not interchangeable with the AirSense 10 / AirCurve 10 / S9 humidifier tubs — those use different chambers.
With normal use and regular cleaning, this tub should last an average of 3 to 6 months.
Replace sooner if you notice mineral buildup that won't come off with cleaning, cracks, cloudiness, or discoloration. Hard water shortens the lifespan — distilled water extends it.
Cleaning your humidifier tub
- Daily: Empty any unused water, rinse with fresh water, and let air dry.
- Weekly: Disassemble the tub and wash with warm, soapy water. Rinse thoroughly and air dry.
- Use distilled water whenever possible — minimizes mineral buildup and significantly extends tub life.
- Avoid harsh cleaners, bleach, or dishwashers — these can damage the chamber materials.
Call 1-800-775-0942 with your ResMed model — we'll confirm fit before you order.

About Main Clinic Supply
We're based in Rochester, Minnesota — home of the world-famous Mayo Clinic. We deliver free to all Mayo Clinic hospitals and local hotels. With FedEx's strong presence in Rochester, our family-owned business is able to ship late into the evening.
Inspired by Mayo Clinic's values, we prioritize helping people over making profits — embodying Dr. Mayo's 1910 mission statement: "The needs of the patient come first."