Which Cushion Fits My ResMed AirFit F30? (Compatibility Guide)
If your ResMed AirFit F30 mask has started leaking, feeling loose, or marking your face more than usual, the cushion is almost always the part to replace not the whole mask. But buying the right replacement means matching the exact cushion your frame is designed for. Here's what fits, what doesn't, and how to choose your size.
The short answer
The ResMed AirFit F30 uses the AirFit F30 UltraCompact cushion. It comes in two sizes Small and Medium and both fit the same universal F30 frame. You do not need a different frame to change sizes; you simply swap the cushion.
What the AirFit F30 cushion is and why it's different
The F30 is a compact full-face mask. Instead of sitting over the top of the nose like a traditional full-face mask, its cushion sits under the nose and over the mouth. That under-the-nose design is why it's popular with people who feel claustrophobic in larger masks, wear glasses, or have facial hair across the bridge of the nose.
Because of that unique shape, the F30 cushion is not interchangeable with other ResMed masks.
Important: what does NOT fit the AirFit F30
This is where most wrong orders happen. The following cushions look similar but are not compatible:
- AirFit F30i cushion the F30i is a different mask (top-of-head tube connection). Its cushion will not seal correctly on an F30 frame.
- AirFit F20 / AirTouch F20 cushions — these are full-over-the-nose cushions for a larger frame and do not fit the F30.
If you own an F30i, you need the F30i cushion, not the F30 cushion. Always check the name printed on your mask frame before ordering.
How to choose your size (Small vs Medium)
ResMed provides a fitting template for the F30, but a simple guide:
- Small suits narrower face shapes and shorter nose-to-mouth distances.
- Medium suits average to larger face shapes.
If you're between sizes or unsure, the most common approach is to start with the size your mask originally came with. If you've never been fitted, a fit pack or sizing guide helps avoid guesswork.
When to replace your cushion
Cushions are wear items — the silicone softens and the seal degrades with use. Replace yours when you notice:
- Air leaks that weren't there before, especially at night
- The silicone feeling sticky, stiff, or discolored
- Needing to over-tighten the headgear to stop leaks
- More noticeable red marks on your face in the morning
As a general guideline, many users replace full-face cushions about once a month to keep a reliable seal.
Order your AirFit F30 replacement cushion
MyCPAPZone stocks genuine ResMed AirFit F30 UltraCompact cushions in both Small and Medium, with fast nationwide US shipping. Replacement cushions and other CPAP parts do not require a prescription, so you can reorder your cushion anytime.
Shop genuine AirFit F30 replacement cushions here.
Frequently asked questions
How often should I replace my AirFit F30 cushion?
Many users replace full-face cushions roughly once a month, or sooner if the seal starts to leak or the silicone shows wear.
Do I need a prescription to buy a replacement cushion?
No. Individual replacement cushions, pillows, filters, and tubing are available without a prescription in the US. A prescription is only required for a machine or a complete, assembled mask.
Will the AirFit F30i cushion fit my F30?
No. The F30 and F30i are different masks with different cushions. Check the name on your frame and order the cushion that matches it exactly.
What size AirFit F30 cushion should I buy?
The F30 cushion comes in Small and Medium, both fitting the universal F30 frame. If unsure, start with the size your mask originally came with.
Can I just replace the cushion instead of the whole mask?
Yes. The cushion is the part that wears out fastest. Replacing it restores the seal at a fraction of the cost of a new mask.