There is no single best CPAP mask. The right one depends on how you breathe, how you sleep, and what you can tolerate on your face. CPAP masks fall into three main categories: nasal pillows, nasal masks, and full-face masks. Each works best for a different set of needs, and picking the wrong type is one of the most common reasons people abandon CPAP therapy altogether.
The Three Main Mask Types
Nasal pillow masks are the smallest and lightest option. Two soft inserts sit just inside or against your nostrils and deliver air pressure directly. They leave your field of vision completely open, so you can read, watch TV, or wear glasses in bed. They’re the go-to choice if you feel claustrophobic with something covering more of your face, and they work well if you have facial hair that prevents a good seal with larger masks.
Nasal masks cover the entire nose with a cushioned triangular piece. They handle higher air pressure settings better than nasal pillows because the larger cushion distributes the force over a wider area. If your prescription pressure is on the higher end, or you toss and turn a lot at night, a nasal mask tends to maintain its seal more reliably.
Full-face masks (sometimes called oronasal masks) cover both the nose and mouth. They’re the only reliable option if you breathe through your mouth at night. If you deal with chronic nasal congestion or allergies that block your nose, a full-face mask ensures you still get consistent pressure even when your nasal passages are partly closed. Some people try a nasal mask with a chin strap to prevent mouth breathing, but if that doesn’t work after a month or so, switching to a full-face mask is the standard next step.
Which Mask Fits Your Sleep Position
Back sleepers have the easiest time because the back of the head rests on the pillow, not the mask. Any of the three types will work without pressure points or seal problems. You can choose based on other factors like breathing style or comfort preference.
Side sleepers need something with a smaller footprint. Nasal pillows and nasal masks are the better choices here because they’re less bulky and less likely to get pushed out of alignment when your face presses into the pillow. If you do use a nasal mask on your side, look for one with soft, flexible headgear that adjusts as you shift position. Rigid straps tend to create gaps in the seal when you roll over.
Stomach sleepers have the most limited options. A nasal pillow mask is really the only practical choice. Its compact, low-profile design has the least amount of surface area to get displaced when your face is pressed down. Even so, stomach sleeping with CPAP takes some trial and error, and a contoured CPAP pillow with cutouts can help.
Mouth Breathing Changes Everything
If you regularly breathe through your mouth during sleep, a nasal-only mask will leak air constantly. That leak drops your effective pressure, defeats the purpose of therapy, and often wakes you up. A full-face mask solves this by covering both airways. Some people don’t realize they mouth breathe until they try a nasal mask and notice their mouth is dry every morning or their machine reports high leak rates. If that’s happening to you, a full-face mask or a nasal mask paired with a chin strap is worth trying.
Claustrophobia and Comfort
Feeling anxious or enclosed is one of the top reasons people stop using CPAP. If this is a concern, start with the least amount of mask possible. Nasal pillows cover the smallest area of your face and feel more like wearing earbuds than wearing a mask. Many people who couldn’t tolerate a full-face mask do fine with nasal pillows once they realize how minimal the contact is.
Hybrid masks are a newer category worth knowing about. They combine nasal pillow inserts with a small mouth cover, giving you full-face coverage without the bridge-of-the-nose contact that many people find uncomfortable. Models like the ResMed AirFit F30 use this approach and sit lower on the face, avoiding the forehead entirely. For people who need full-face coverage but hate the feeling of a traditional large mask, hybrids can be a good middle ground.
Getting the Right Size
A mask that’s the wrong size will leak, leave red marks, or feel uncomfortable no matter how good the design is. Most manufacturers offer printable sizing guides you can download from their websites. These templates have you measure the width of your nose or the distance between specific points on your face, then match those measurements to a cushion size (typically small, medium, or large).
Most masks come with multiple cushion sizes in the box, sometimes called a “fit pack.” This lets you try different sizes before committing. When fitting a mask, do it while lying down in your usual sleep position, not sitting upright. The shape of your face changes slightly with gravity, and a seal that works while you’re sitting up may leak once you’re on your side. Tighten the straps just enough to stop leaks. Over-tightening is a common mistake that causes pressure sores and actually worsens the seal by distorting the cushion.
Popular Models Worth Considering
The CPAP mask market is dominated by three manufacturers: ResMed, Fisher and Paykel, and Philips Respironics. Among current models, the ResMed AirFit F20 is one of the most widely recommended full-face masks for its balance of seal quality and comfort. For nasal pillows, the ResMed AirFit P10 is a long-standing favorite because of its extremely light, quiet design. The Philips Respironics DreamWear line uses a unique top-of-head tube connection that keeps the hose out of your face, which many new users find less disruptive. The Fisher and Paykel Evora is a compact full-face option for people who want mouth coverage without a bulky frame.
That said, individual face shapes vary enormously. A mask that fits one person perfectly can be a poor fit for someone with a different nose bridge or jaw width. Most durable medical equipment suppliers will let you try a mask on before purchasing, and many have 30-day exchange policies. Take advantage of these.
When to Replace Mask Parts
CPAP mask components wear out on a predictable schedule, and worn-out parts are a sneaky cause of leaks and discomfort. The cushion or pillow insert that seals against your skin degrades fastest. Medicare’s replacement guidelines, which most insurance plans follow, allow new cushions or nasal pillows up to twice per month, though most people replace them every two to four weeks in practice. The mask frame itself is typically covered once every three months, and headgear straps once every six months.
You’ll know it’s time for a new cushion when you notice you’re tightening your straps more than usual to get a good seal, or when the silicone looks flattened, cracked, or discolored. Oils from your skin break down the silicone over time, so washing the cushion daily with mild soap and warm water extends its life noticeably. Headgear stretches out with use, so if the straps no longer hold the mask snugly even at their tightest setting, it’s time for a replacement.
How to Narrow Down Your Choice
Start with three questions. First: do you breathe through your mouth at night? If yes, you need a full-face mask or a hybrid. If no, nasal pillows or a nasal mask are both on the table. Second: what position do you sleep in? Side and stomach sleepers should lean toward the smallest mask that meets their breathing needs. Third: what’s your prescribed pressure? Higher pressures (generally above 12 to 14 cmH2O) tend to feel more comfortable through a nasal mask or full-face mask than through nasal pillows, where the concentrated airflow into the nostrils can feel harsh.
If you’re new to CPAP and unsure about any of these, a nasal mask is often a solid starting point. It handles a wide range of pressures, works for most sleep positions except stomach, and strikes a middle ground between the minimal coverage of pillows and the full coverage of an oronasal mask. From there, you can adjust based on what bothers you most during your first few weeks of use.