After helping hundreds of CPAP users each year find a CPAP mask, we can confidently say one thing: full face masks have come a long way over the years. In 2026, comfort, seal reliability, and ease of use matter more than ever and the ResMed AirFit F40 continues to stand out as one of the most talked-about full face options among clients at HelloSleep.ca.
If you breathe through your mouth at night, struggle with nasal congestion, or require higher pressure settings, a full face mask is often recommended. You can explore our entire full face mask collection here. Today, we are talking aboutu the AirFit F40 which builds on this need with a more refined, low-profile design that reduces the bulk and pressure commonly associated with traditional or older full face models, and that’s where it truly stands out. Let's dive into more details.
Design & Build Quality:
Low-Profile, Modern Frame
One of the first things clients notice when they try on the AirFit F40 is how streamlined it feels compared to traditional full face masks. The cushion sits under the nose rather than over the bridge, reducing pressure and red marks. For many users who’ve dealt with nasal bridge irritation in the past, this is a meaningful improvement.
The frame is softly wrapped and contoured to sit comfortably along the cheeks. In practical terms, that means fewer pressure points and a more stable fit without over-tightening.
InfinitySeal Cushion Technology
ResMed’s InfinitySeal silicone cushion adapts to facial contours and helps maintain a seal even when pressure levels fluctuate throughout the night. In real-world use, this matters most for people on AutoSet therapy or higher pressures. From what we see from our customers:
- Leak complaints are lower compared to older full face models
- Users often don’t need to overtighten headgear
- The cushion maintains seal integrity across different sleep positions
The cushion is made from silicone rather than memory foam, allowing for easy daily cleaning and generally offering greater durability compared to foam alternatives when properly maintained. If you’re already using this mask, you can shop replacement F40 silicone cushions here.
Front Short Tube with Swivel
Unlike some traditional full face masks, the AirFit F40 features a short front tube with a swivel connection. This allows the tubing to move more naturally as you shift positions. For clients who:
- Sleep on their side
- Move frequently
- Or dislike rigid tubing pulling at the mask
This design makes a noticeable difference in reducing drag and tension.
Magnetic Headgear Clips
The headgear includes magnetic clips for easier removal and reattachment. Individuals and bed partners with implanted medical devices should review manufacturer guidance before use. This is important: ResMed provides safety guidance stating that masks with magnets should be kept at least 6 inches (15 cm) away from certain medical implants such as pacemakers, defibrillators, neurostimulators, or metallic cranial implants. Learn more about CPAP masks with magnetic components and whether they’re the right fit for your needs here.
Comfort & Nightly Use
Reduced Pressure Points Around the Nose
Because the cushion seals under the nose instead of across the bridge, many users report:
- Fewer red marks
- Less soreness
- Better tolerance for long nightly use
This design is particularly helpful for users who wear glasses before bed or read while settling in.
Quiet Operation
The AirFit F40 diffuses airflow in a way that reduces direct noise. In practice, couples often comment that it’s less disruptive compared to traditional full face designs. While all CPAP masks produce some sound due to airflow, this model performs consistently well in shared sleep environments.
Performance in Real Life
After a couple years of continued use among our clients, here’s what stands out in 2026:
Leak Control Most users experience stable sealing when properly fitted. Correct sizing remains essential - the right cushion size makes all the difference. If you’re dealing with CPAP mask leaks, you may find our guide CPAP Mask Leaks and How to Fix Them helpful. It breaks down common causes and practical solutions to help improve your seal and overall therapy comfort.
Compatibility The AirFit F40 connects to any standard CPAP or APAP machine using universal 22 mm tubing connections, including devices from ResMed and other popular CPAP manufacturers.
Maintenance The mask disassembles easily for cleaning. Recommended maintenance:
- Daily cushion wipe-down
- Weekly wash of cushion and frame
- Regular inspection for cracks, stiffness, or discoloration
Silicone cushions generally last longer than memory foam cushions but should still be replaced as part of routine CPAP supply schedules. For in-depth detailed guidance on cleaning and maintaining your CPAP equipment, read our blog Cleaning and Caring for Your CPAP Equipment.
What Clients Tell Us
Common Praise:
- “Feels lighter than my old full face mask”
- “No more sore nose bridge”
- “Better seal without cranking it tight”
- “Quieter than I expected”
Common Adjustments:
- Users switching from nasal masks may need a few nights to adapt to full face coverage.
- Proper sizing and strap adjustment are critical during the first week.
In most cases, once fitted correctly, clients report steady comfort and improved consistency with therapy.
Who the AirFit F40 is Best For?
- Mouth breathers
- Higher pressure users
- People who struggled with nasal bridge irritation
- Side sleepers who want a flexible front tube connection
If you’re exploring full face mask options, and you’re a mouth breather or a high pressure CPAP user, the Evora Full Face Mask is also a popular contender that's worth considering. It offers a modern, lightweight design with a low-profile feel, delivering the benefits of a full face mask without the bulk and heaviness. Read our blog Mouth Breather? High Pressure User? Why Evora Deserves a Look here.
Summary
The ResMed AirFit F40 reflects how full face masks have evolved over the years: lower profile, better sealing technology, and improved comfort without unnecessary bulk.
From what we see every day working directly with CPAP users, this mask has earned its place as a strong full face option, especially for those who previously avoided them due to bulk or perceived discomfort.
As always, mask selection is a custom process, it should be based on individual pressure settings, facial structure, and medical considerations. If you have questions about sizing or compatibility, email us at shop@hellosleep.ca and our team is always happy to help guide you. Shop AirFit F40 Here!
ResMed AirFit F40 Frequently Asked Questions
What is the ResMed AirFit F40 CPAP mask?
The AirFit F40 is a low-profile full face CPAP mask with an under-the-nose cushion designed for improved comfort and seal performance compared to traditional full face masks.
How does the AirFit F40 compare to other full face masks?
The ResMed AirFit F40 is a lower-profile full face mask designed keep the nose bridge free and to feel lighter and less bulky than traditional full face models. It improves comfort and seal stability while reducing pressure points, especially around the nose bridge.
What makes the AirFit F40 different from the AirFit F20?
The AirFit F40 uses a low-profile under-the-nose cushion, while the ResMed AirFit F20 sits over the nose and has a more traditional full-face design covering the bridge of your nose. This makes the F40 generally feel lighter with fewer pressure points, while the F20 offers a more structured, coverage-heavy seal.
Does the AirFit F40 leave marks on the face?
It is designed to minimize facial marks by using an under-the-nose cushion that avoids pressure on the nasal bridge. Most users report fewer red marks and less irritation compared to older full face masks when properly fitted.
Who is the AirFit F40 best suited for?
It’s best for mouth breathers, people with nasal congestion, higher pressure users, and side sleepers who need a flexible and stable full face option.
Is the AirFit F40 comfortable for long-term use?
Yes, many users find it comfortable for all-night use due to reduced pressure on the nose bridge and a softer, more minimal frame design.
Does the AirFit F40 help reduce CPAP mask leaks?
Yes, its InfinitySeal cushion adapts to facial contours to maintain a stable seal, even with movement or changing pressure levels.
Is the AirFit F40 good for side sleepers?
Yes, the flexible frame and front swivel tube help maintain comfort and seal stability for users who sleep on their side or change positions frequently.
Is the AirFit F40 compatible with all CPAP machines?
Yes, it uses a standard 22 mm connection and is compatible with most CPAP and APAP machines from major manufacturers.
Are there any safety considerations with the AirFit F40?
Yes, it uses magnetic clips that should be kept at least 6 inches away from implanted medical devices such as pacemakers or defibrillators.
