Description
Quick answer: This is the genuine ResMed cleanable water tub for the H5i heated humidifier (part 36800), used with the S9 series. Unlike the standard disposable tub, the cleanable version opens up so it can be washed thoroughly and reused — a practical long-term choice for users who prefer a reusable chamber over regular replacements. It’s the reservoir that holds the water your humidifier heats to add moisture to your airflow.
What’s included
- 1 × ResMed H5i cleanable water tub (part 36800)
Humidifier and device not included.
About this part
The H5i heated humidifier warms water in the tub so the air delivered through your tubing carries moisture — helping prevent the dry mouth, dry nose, and nasal irritation that unhumidified therapy can cause.
ResMed makes the H5i tub in two versions. The standard tub is designed as a disposable component, replaced periodically. This cleanable tub is built to come apart for thorough cleaning, so it can be washed properly and reused over a longer period. Many users prefer it for exactly that reason: fewer replacements, and the ability to clean every surface rather than rinsing a sealed unit.
It’s still a wear item — even a cleanable tub eventually clouds, scales, or develops a poor seal, and should be replaced when it does.
Key features
- Genuine ResMed cleanable tub (36800) — correct fit for the H5i humidifier.
- Designed to be opened and washed — thorough cleaning of all surfaces.
- Reusable — a long-term alternative to disposable tubs.
- For the H5i / S9 platform — matched to the humidifier.
- Simple to fit — slides into the humidifier; no tools.
Specifications
| Specification | Detail |
|---|---|
| Product type | Humidifier water tub (cleanable) |
| Compatible humidifier | ResMed H5i (S9 series platform) |
| Version | Cleanable / reusable |
| Included | Water tub only |
| ResMed reference / SKU | 36800 |
| Brand | ResMed |
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 per the H5i user guide (the cleanable design allows access to all internal surfaces), and let it dry completely before reassembly. Check the seal each time you reassemble. 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 is designed to be opened and washed thoroughly for reuse; the standard tub is a disposable component replaced periodically.
Which humidifier does it fit?
The ResMed H5i heated humidifier, used with the S9 series.
Is it dishwasher safe?
Follow the cleaning instructions in the H5i user guide — cleaning methods and temperature limits are specified there.
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 — even a cleanable tub is eventually a wear item.
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 H5i humidifier according to the device’s user guide. Use only water as directed by the manufacturer, and follow the specified cleaning method.
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