ResMed HumidAir 11 Cleanable Water Tub

Quick answer: This is the genuine ResMed cleanable water tub for the HumidAir 11 humidifier (part 39101), used with the Air11 series — AirSense 11 and AirCurve 11. It’s the reservoir that holds the water your humidifier heats to add moisture to your airflow. Unlike the standard tub, the cleanable version opens up so every internal surface can be washed thoroughly and reused — a practical long-term choice if you’d rather deep-clean than replace.

What’s included

• 1 × ResMed HumidAir 11 cleanable water tub (part 39101)

Device and humidifier not included.

About this part

The HumidAir 11 humidifier is built into the AirSense 11 and AirCurve 11. It warms water in the tub so the air delivered through your tubing carries moisture — which helps prevent the dry mouth, dry nose, and nasal irritation that unhumidified therapy can cause.

ResMed makes the HumidAir 11 tub in two versions, and the difference is maintenance. The standard tub is a sealed unit, replaced on a schedule. This cleanable tub is designed to be opened, so you can wash all internal surfaces properly and keep using it over a longer period. It costs more up front but is replaced less often — which many long-term users prefer.

It’s still a wear item: even a cleanable tub eventually clouds, scales up, or stops sealing properly, and should be replaced when it does.

Key features

• Genuine ResMed cleanable tub (39101) — correct fit for HumidAir 11.
• Opens for thorough cleaning — access to all internal surfaces.
• Reusable — a long-term alternative to disposable tubs.
• For AirSense 11 & AirCurve 11 — the Air11 platform.
• Simple to fit — slides into the device; no tools.

Specifications

Care & replacement

Empty the tub daily and refill with fresh distilled water before each use — distilled water greatly reduces mineral scale and extends the tub’s life. Clean it according to the HumidAir 11 instructions (the cleanable design gives access to all internal surfaces), and let it dry completely before reassembly. Check the seal each time you put it back together. Replace the tub if it becomes cloudy, heavily scaled, cracked, or no longer seals properly.

Frequently asked questions

What’s the difference between the cleanable tub and the standard tub?
The cleanable tub opens so it can be washed thoroughly and reused; the standard tub is a sealed unit replaced periodically.

Which devices does it fit?
Devices with the HumidAir 11 humidifier — the AirSense 11 and AirCurve 11.

Will it fit my AirSense 10?
No — the Air10 series uses a different HumidAir tub. Contact us and we’ll point you to the right one.

What water should I use?
Distilled water is recommended — it reduces mineral buildup and helps the tub last longer.

When should I replace it?
When it becomes cloudy, heavily scaled, cracked, or no longer seals properly.

Do I need a prescription?
No — replacement humidifier parts do not require a prescription.

Can I get it delivered in Brooklyn or shipped nationwide?
Yes — Stark Medical Supplies offers local pickup and delivery in Brooklyn and across NYC, plus USPS shipping throughout the continental U.S.

Use with a compatible ResMed HumidAir 11 humidifier according to the device’s user guide. Use only water as directed by the manufacturer.