ResMed AirSense 11 & AirCurve 11 HumidAir Water Tub

The ResMed HumidAir™ Water Tub for AirSense 11 and AirCurve 11 is a replacement humidifier chamber designed to maintain comfortable moisture during CPAP therapy. Available in both Standard and Cleanable versions, it supports consistent humidification for effective sleep apnea treatment.

Description

Proper humidification plays an important role in comfortable CPAP therapy. The ResMed HumidAir Water Tub for AirSense 11 and AirCurve 11 CPAP and BiPAP machines is designed to deliver consistent moisture throughout the night, helping reduce dryness and throat irritation.

This replacement water chamber integrates seamlessly with compatible ResMed devices, supporting steady humidified airflow to your CPAP mask — whether you use a nasal mask or full face mask. With a maximum fill capacity of 380 mL, it provides ample water for overnight therapy.

Two versions are available to suit different maintenance preferences. The Standard HumidAir tub features an opaque design and is intended for hand washing only. The Cleanable HumidAir tub is clear and dishwasher safe, offering added convenience for users who prefer simplified cleaning routines.

Replacing your CPAP water chamber as recommended helps maintain hygiene, support consistent humidity levels, and protect your machine’s performance over time.

Key Features

Replacement humidifier water tub for AirSense 11 and AirCurve 11
Supports consistent humidification during CPAP therapy
Holds up to 380 mL at maximum fill line
Available in Standard (hand wash only) version
Available in Cleanable (dishwasher safe) version
Seamless integration with compatible ResMed CPAP machines
Designed to support comfortable, moisturized airflow

Product Specifications

Product Type: CPAP humidifier water tub
Compatibility: ResMed AirSense 11 and AirCurve 11
Capacity: 380 mL maximum fill
Versions Available:
- Standard (opaque, hand wash only)
- Cleanable (clear, dishwasher safe)
Intended Use: CPAP and BiPAP humidification

Important Compatibility Note

This HumidAir water tub is designed exclusively for ResMed AirSense 11 and AirCurve 11 devices. It is not compatible with AirSense 10 or other CPAP machine models.

At CPAP Ontario, we provide trusted CPAP replacement parts and accessories to help maintain optimal therapy comfort.

Enjoy Free Canada-wide shipping on orders $200 or more!

Additional information

Weight	1 kg
Dimensions	33.02 × 25.4 × 10.16 cm

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Frequently Asked CPAP Questions

What Kind Of CPAP Mask Is Best For Me?

The best CPAP mask depends on your sleep style, breathing habits, and comfort preferences.

Nasal masks are a great option if you breathe through your nose and prefer a lightweight, low-profile feel.
Nasal pillow masks are ideal for active sleepers who want minimal contact and an open field of vision.
Full face masks work well if you breathe through your mouth or experience nasal congestion.

If you’re unsure which style is right for you, our team is happy to help you compare options and find a mask that fits comfortably and supports consistent therapy.

Does CPAP Ontario Deliver?

Yes! CPAP Ontario offers free Canada-wide shipping on orders over $100.
We ship quickly and securely so you can receive your CPAP masks, supplies, and accessories right to your door — no matter where you’re located in Canada.

Can I Bundle Items I Need?

Absolutely. We offer CPAP supply bundles that make it easy to get everything you need in one purchase.

Our bundles typically include a CPAP mask, filters, and essential accessories, all at a reduced cost compared to buying items individually. Bundling helps you save money, stay stocked, and simplify reordering.

Visit our Bundles page to explore available options.

How Often Should I Replace My Mask & Equipment?

Replacing CPAP supplies regularly helps maintain comfort, hygiene, and effective therapy. General replacement guidelines include:

Full Face Masks: Every 6 Months
Mask cushions & nasal pillows: Every 1–3 months
CPAP filters: Every 1–6 months (depending on type)
CPAP tubing: Every 6–12 months
Water chamber: Every 6 months

Over time, normal wear can affect fit and performance. Keeping up with replacements helps reduce air leaks, improve comfort, and support better sleep.

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ResMed AirSense 11 & AirCurve 11 HumidAir Water Tub