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
| Specification | Detail |
| Product type | Integrated heated humidifier (with cleanable chamber) |
| Compatible machines | ResMed S8 series (CPAP/APAP/VPAP), VPAP IV; Stellar 150 (auto-detected) |
| Not for | AirSense 10 / AirSense 11 (built-in humidifiers) |
| Chamber included | Cleanable, dishwasher-safe (26958) |
| Capacity | 390 mL |
| Heat setting | Off–6 (adjustable dial) |
| Heater plate | Stainless steel + nickel-coated aluminium |
| Features | Warm-up; flip-top lid; high humidity output (~30% > H3i) |
| Water | Distilled water; change daily; no additives |
| Included | Humidifier + cleanable chamber |
| Not included | Machine |
| Prescription | May be required (varies) |
| ResMed reference / SKU | 24927 |
| Brand | ResMed |
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 — Task Supply Corp offers USPS shipping throughout the continental U.S., plus local pickup and delivery in Brooklyn and all five boroughs of New York City.
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.