ResMed AirFit N30
A minimal nasal cradle mask: the cushion sits under the nose instead of over the bridge, with a septum bridge membrane and a front-mounted short tube. It has only three parts (frame, headgear, cushion) and no magnets.
Usually suits
- Nose breathers who get red marks on the bridge of the nose from traditional nasal masks
- Glasses wearers and people who read before sleep
- People who need a magnet-free mask
Design
- Under-the-nose nasal cradle cushion with a septum bridge membrane
- No contact with the bridge of the nose
- QuietAir vent that diffuses exhaled air
- Three-part design: frame, adjustable soft headgear, cushion
- Short lightweight flexible tube at the front
- Rated for 4 to 20 cm H2O
- No magnets
Strengths and trade-offs
- Nothing touches the bridge of the nose, so no bridge sores
- Open field of view for glasses, reading or TV
- No magnets, so it is an option where magnetic masks are contraindicated
- Few parts, which keeps cleaning simple
- Rated only up to 20 cm H2O
- Tube connects at the front of the face rather than the top of the head
- Not compatible with AirMini in its standard form
- Nasal only, so mouth breathing needs a chinstrap or a different mask
Finding your size
Print ResMed's sizing template at true scale and hold it under your nose, perpendicular to your face. Start with the blue and red side for a narrow nose or the purple side for a wide one, and check in a mirror whether your nostrils fall inside the margins. If you are between sizes, choose the larger. The starter pack includes Small and Medium; Small Wide is sold separately.
How to fit it
Size the cushion
Use the printed template under your nose. If your nose sits between two boxes, use the larger size.
Attach the cushion and frame
Make sure the cushion is fully seated in the frame and the tube is attached before you put the mask on.
Place the cradle under your nose
Rest the cushion under your nose so the openings line up with your nostrils, then pull the headgear over the back of your head.
Adjust lying down
With your machine running, lie in your sleep position and adjust the headgear just enough to hold the seal. The cradle should rest gently under the nose, not push up into it.
Common problems and fixes
Leak from the sides of the nose
Check the size: a wide nose often needs the Small Wide cushion, which is sold separately. Then re-center the cushion so it sits evenly under both nostrils.
Soreness on the septum or under the nose
Loosen the headgear so the cradle rests rather than presses. If the soreness persists, ask your supplier about a different size or mask style.
Mouth leaks or dry mouth
Try a chinstrap. If you continue to breathe through your mouth, ask your clinician about a full face mask.
Noise from the mask
Clean the vent with a soft brush during the weekly wash and make sure it is clear. A new hiss at the cushion edge usually means a leak or a worn cushion.
Cleaning and care
Hand wash the cushion after each use in warm water with a mild liquid detergent. Wash the headgear and frame at least weekly, using a soft brush on the vent. Rinse thoroughly, shake excess water out of the frame and air dry out of direct sunlight. Do not use bleach, scented products or ozone or UV cleaning devices.
How often to replace parts
- Mask
- 1 complete mask every 3 months (Medicare A7034, nasal interface).
- Cushion
- Up to 2 per month (Medicare A7032, nasal cushion). This is typical insurer guidance; replace sooner if the cushion tears, hardens or stops sealing.
- Headgear
- 1 every 6 months (Medicare A7035).
Supplies that can help
A soft strap that supports the jaw to help keep the mouth closed, used mainly with nasal and nasal pillow masks to reduce mouth leaks.
Plain, mild dish soap is the cleaning agent most CPAP makers and the FDA point to for masks, tubing and humidifier chambers.
Pre-moistened wipes for a quick daily wipe of the mask cushion, mostly to remove skin oils between proper washes.
A simple hook or hanger for drying CPAP tubing vertically after washing, and for keeping it off the floor.
Retailer links are affiliate links. We may earn a commission at no cost to you.
Frequently asked questions
What is the difference between the AirFit N30 and the N30i?
Both use an under-the-nose cradle cushion. The N30 has its tube at the front of the face; the N30i routes the air through the frame to a connection at the top of the head, which lets you sleep in more positions.
Does the AirFit N30 have magnets?
No. ResMed lists the N30 as containing no magnets, which makes it one of the options when a magnetic mask is contraindicated.
Which AirFit N30 cushion size do I need?
Use ResMed's printable template under your nose. Narrow noses usually start with Small or Medium; wide, flatter noses often need Small Wide, which is sold separately from the starter pack.
What pressure can the AirFit N30 handle?
ResMed lists a range of 4 to 20 cm H2O. If your prescribed pressure is higher than that, ask your clinician or supplier about a mask rated for it.
Sources
Last reviewed October 11, 2026. How we research · Report an error