Comparison
AirFit N30i or DreamWisp?
Two nasal masks with the tube connecting on top of the head and the cushion sitting under the nose. The AirFit N30i is documented as magnet-free, at 14 dBA at one meter with the QuietAir vent, in four cushion sizes. The DreamWisp uses magnetic clips, which Philips contraindicates when the patient or someone close by during use has an implant, declares 18.7 dBA and offers five cushion sizes.
Updated September 16, 2026
Under-nose cushion, tube at the top
The AirFit N30i is a ResMed nasal mask with a silicone cushion that sits under the nose and a tube that connects at the top of the head. The SpringFit frame comes in two sizes and the cushion in four.
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Wisp cushion with a top-of-head tube
A nasal mask that combines the minimal-contact Wisp cushion with the DreamWear frame, with the tube connecting on top of the head. Philips presents it for sleeping on your stomach, side or back, and declares 18.7 dBA.
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Side by side
Data published by the manufacturers. Rows that differ come first.
| Specification | AirFit N30i | DreamWisp |
|---|---|---|
| SizesDiffers | S, SW, M, W | P, S, M, L, XL |
| Declared noiseDiffers | 14 dBA at 1 m · 21 dBA sound power | 18.7 dBA at 1 m |
| MagnetsDiffers | No | Yes |
| Nose bridgeDiffers | Free, the mask does not touch it | Not specified |
| AirMini compatibleDiffers | No | Not specified |
| Cushion material | silicone | silicone |
| Top-of-head tube | Yes | Yes |
Which one for you?
Rather the AirFit N30i if:
- Side or stomach sleepers
- A nasal bridge prone to marks
- Glasses wearers who read or watch TV in bed
Watch out for
- Not compatible with the ResMed AirMini.
- Nasal mask: if you breathe through your mouth, air escapes.
- Select the Pillows mask setting on ResMed devices; ResMed notes SmartStop may not work with some devices.
Rather the DreamWisp if:
- Side, stomach or restless sleepers
- Nose breathing, mouth closed
- Reading or glasses in bed
Watch out for
- Magnets: recalled by Philips in 2022 to update its warnings. Contraindicated with certain implants, including in the bed partner.
- Nasal mask: if you breathe through your mouth, air escapes.
CPAP Ranker analysis, written from the manufacturers' documents. It is not a patient review and does not replace your equipment provider.
At least one of these masks contains magnets. Manufacturers advise against them if you or your bed partner have certain medical implants. The full warning and its source are on the page of each mask concerned.
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CPAP Ranker is funded by VivaRespire, which sells both products compared. This partnership has no influence on the comparisons, ratings or reviews.