ResMed H4i Water Chamber – Standard

Description

Quick answer: This is the genuine ResMed standard water chamber for the H4i heated humidifier (part 26952). The water chamber is the reservoir that holds the water your humidifier heats to add moisture to your airflow. Replacing a cloudy, cracked, or worn chamber restores proper humidification and keeps your setup hygienic. Standard (disposable) version — a cleanable version is also available (26958).

What’s included

• 1 × ResMed H4i standard water chamber (part 26952)

Humidifier, top cover, and seal not included — the top cover & seal is part 26953.

About this part

The H4i heated humidifier warms water in the chamber so the air delivered through your tubing carries moisture — which helps prevent the dryness and nasal irritation that unhumidified therapy can cause. The chamber itself is a wear item: over time the plastic can cloud, scale up from mineral deposits, or develop cracks, and a chamber that no longer seals properly can leak or reduce humidification.

This is the standard chamber, designed as a disposable/replaceable component. If you’d prefer a chamber intended for repeated cleaning, ResMed also makes a cleanable version (26958).

Key features

• Genuine ResMed water chamber (26952) — correct fit for the H4i humidifier.
• Standard disposable design — straightforward periodic replacement.
• Restores proper humidification — replaces a clouded, scaled, or cracked chamber.
• Simple to swap — slides into the humidifier; no tools.
• Cleanable version available — part 26958, if you prefer a reusable chamber.

Specifications

Care & replacement

Empty the chamber daily and refill with fresh distilled water before each use — distilled water greatly reduces mineral scale and extends the chamber’s life. Clean it per the H4i user guide, and let it dry completely before reassembly. Replace the chamber when it becomes cloudy, scaled, cracked, or no longer seals properly — commonly around every 6 months with regular use, or sooner as needed. Never use tap water long-term if you can avoid it, and never add anything to the water other than what the manufacturer allows.

Frequently asked questions

What does the water chamber do?
It holds the water the humidifier heats, adding moisture to the air delivered through your tubing.

Which humidifier does it fit?
The ResMed H4i heated humidifier.

What’s the difference between 26952 and 26958?
26952 is the standard (disposable) chamber; 26958 is the cleanable version intended for repeated cleaning.

Is the top cover included?
No — the top cover and seal is a separate part (26953).

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

How often should it be replaced?
Commonly around every 6 months with regular use, or sooner if it’s cloudy, scaled, cracked, or leaking.

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 H4i humidifier according to the device’s user guide. Use only water as directed by the manufacturer.