ResMed H4i Heated Humidifier (with Cleanable Water Chamber)

Description

Quick answer: This is the genuine ResMed HumidAire H4i heated humidifier (part 24927) — the integrated heated humidifier unit that clicks onto the front of ResMed S8-series (and VPAP IV) machines to add warmed moisture to your therapy air, easing dry nose, mouth, and throat. This version comes with the cleanable (dishwasher-safe) water chamber (26958). It delivers high humidification output (about 30% more than the older H3i), with easy Off–6 heat settings and a flip-top lid for simple refilling. For ResMed S8-series machines. Machine not included.

What’s included

• 1 × ResMed H4i heated humidifier (docking unit, part 24927)
• 1 × H4i cleanable water chamber (dishwasher-safe, 26958)

CPAP/VPAP machine not included.

About this product

The HumidAire H4i is ResMed’s clip-on heated humidifier for the S8 platform. Dry air from CPAP/BiLevel therapy commonly causes a dry or stuffy nose, dry mouth, and throat irritation — a heated humidifier warms and moisturizes the air to relieve that and make therapy more comfortable, improving adherence.

• Clicks onto the front of the machine — integrates with any S8 or VPAP IV device to form one compact, unobtrusive unit.
• High humidity output — high-volume, high-efficiency humidification; about 30% more than the earlier H3i.
• Adjustable heat (Off–6) — a user-friendly dial, easy to use even in the dark, warms to your comfort level.
• Warm-up feature — can pre-warm the humidifier before therapy starts.
• Flip-top lid — refill without removing the tube; no need to detach tubing.
• 390 mL capacity — a full night of humidification.

This version includes the cleanable chamber: the cleanable water chamber (26958) disassembles and is dishwasher-safe (stainless steel + silicone seal), so it’s more hygienic, longer-lasting, and approved for multi-patient use — a better choice than the hand-wash-only standard chamber for clinics or long-term users.

Compatibility — important

• Works with ResMed S8-series CPAP/APAP/VPAP machines (and VPAP IV); also detected automatically on the Stellar 150.
• It is not for the current AirSense 10 / AirSense 11 machines (those have their own built-in HumidAir humidifiers).
• Use distilled water at room temperature to reduce mineral build-up; change water daily. Do not use additives (scented oils/perfumes) — they reduce output and can damage the chamber.

Key features

• Genuine ResMed HumidAire H4i heated humidifier (24927) — with cleanable chamber.
• Clips onto ResMed S8 / VPAP IV machines — integrated, compact.
• High humidification — ~30% more than the H3i; 390 mL.
• Adjustable heat (Off–6) + warm-up — comfortable, easy control.
• Flip-top lid — refill without removing the tube.
• Cleanable, dishwasher-safe chamber — hygienic, multi-patient approved.

Specifications

Frequently asked questions

What’s included?
The H4i heated humidifier unit and the cleanable (dishwasher-safe) water chamber. The CPAP/VPAP machine is not included.

Which machines does it work with?
ResMed S8-series machines (and VPAP IV); it’s also auto-detected on the Stellar 150. It is not for AirSense 10/11.

How is this different from just the water chamber?
This is the whole humidifier unit (the heated docking station) with a chamber — not just a replacement tub. If you only need a new tub, that’s the chamber alone (26958 cleanable / 26952 standard).

Why the cleanable chamber?
The cleanable chamber disassembles and is dishwasher-safe — more hygienic and longer-lasting, and multi-patient approved.

What water should I use?
Distilled water at room temperature; change it daily. Don’t use scented oils or additives.

Do I need a prescription?
Requirements vary by seller/insurer for humidifiers — contact us to confirm.

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 S8-series device according to the H4i user guide. Use distilled water, empty the chamber before transport, and take care as the water and chamber base may be hot after use.