ResMed AirFit F40 Replacement Parts
ResMed AirFit F40 parts on this page are the replacement cushion and headgear for the AirFit F40, ResMed's compact full face mask that seals under the nose. F40 parts fit only the F40 frame.
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AirFit F40 replacement parts and schedule
The F40 uses its own cushion and headgear. Parts from the AirFit F20 and F30 will not fit it.
AirFit F40 parts and prices
| Part | What it is | Price |
|---|---|---|
| AirFit F40 cushion | Replacement cushion | $49.99 |
| AirFit F40 headgear | Replacement straps | $34 |
| AirFit F40 complete mask | Full mask with headgear, by prescription | $129 |
Prices checked October 2026. The listings above show the current price and stock.
AirFit F40 replacement schedule
| Part | Replace every |
|---|---|
| Cushion | 1 month |
| Headgear | 6 months |
| Complete mask | 6 to 12 months |
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What you get with Order Your Supplies
- Free shipping on US orders over $99.
- Replacement parts ship without a prescription. A complete mask needs one.
- 30-day returns on unused products in sealed original packaging.
- Not sure a part fits your mask? Call 307-423-0000.
Questions & answers
How often should I replace my AirFit F40 cushion?
Every month. A worn cushion is the most common cause of leaks and marks on the face in the morning.
Will F20 or F30 cushions fit the F40?
No. The F40 has its own compact under-the-nose cushion. Only F40 parts fit the F40 frame.
What sizes do F40 cushions come in?
Small, medium and large. Match the size printed on your current cushion.
How is the F40 different from the F20?
The F40 is smaller and lighter and seals under the nose, which leaves your view clear. It still covers the mouth, so it works for mouth breathers.
Do I need a prescription to buy AirFit F40 parts?
No. Cushions, headgear and other replacement parts ship without a prescription. Only a complete mask with headgear needs one.
Can I return a part if it is the wrong one?
Yes, within 30 days of delivery if it is unused and still in its sealed original packaging. Approved returns are refunded minus a 20% restocking fee, or you can take store credit. Email returns@orderyoursupplies.com to start a return.
Need help with a different question? Contact our team or call 307-423-0000.
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