ResMed AirFit Cushions and Your Best Fit

A CPAP mask can be working perfectly one month and start leaking the next, even when nothing obvious has changed. Often, the issue is the part that sits against your face. ResMed AirFit cushions are replaceable mask components designed to create the comfortable, reliable seal your therapy depends on.

Choosing the correct cushion is not simply a matter of picking the same brand. ResMed makes several AirFit mask ranges, and cushions are shaped for specific mask systems. Getting the right model and size can make a noticeable difference to comfort, noise levels and how consistently you can use your CPAP each night.

What ResMed AirFit cushions do

The cushion is the soft silicone section of your CPAP mask that seals against your face. When it is clean, flexible and correctly fitted, it helps direct prescribed air pressure into your airway while keeping leaks to a minimum.

Over time, facial oils, daily cleaning and normal wear can make silicone less supple. You may notice the mask needs tighter straps, shifts when you turn over, whistles at night or leaves more pronounced marks in the morning. These are common signs that the cushion may need attention.

A replacement cushion is often the simplest place to start when your mask no longer feels as dependable as it did. It can restore the feel of a familiar mask without the cost of replacing the entire setup.

ResMed AirFit cushions are mask-specific

This is the most important point when buying a spare. AirFit cushions are not universal, even where two masks look similar. The connection points, shape and intended seal area differ between models.

For example, an AirFit P10 cushion is made for a nasal pillows mask and sits at the entrance to the nostrils. An AirFit N20 cushion is a nasal cushion that covers the nose. An AirFit F20 cushion is a full face option covering both the nose and mouth. The AirFit F30 and F40 use compact full face designs with their own dedicated cushions.

Check the name printed on your existing mask or cushion before ordering. If you still have the packaging, this can also confirm the model. The mask name matters more than whether it is simply described as a nasal or full face mask.

Do not assume that cushions from the AirFit and AirTouch ranges are interchangeable either. AirTouch masks use memory foam cushions, while AirFit versions generally use silicone. Some mask frames may have related designs, but compatibility should always be confirmed against the specific product details.

Finding the right size

Many ResMed mask cushions come in more than one size. This is especially common with nasal and full face masks. Your current size may be marked on the cushion itself, often as Small, Medium, Large or a similar abbreviation.

The right size should seal with gentle contact rather than heavy pressure. A cushion that is too small can press into the skin or leak around the edges. One that is too large may sit too high, move more easily or leak near the eyes. If your existing size has always been comfortable and effective, replacing it like for like is usually the sensible choice.

If you have never felt that your mask fitted well, a different cushion size may help. Fit can also change over time due to weight changes, facial hair, dental work or skin sensitivity. In that situation, it is worth reviewing the mask fit rather than repeatedly overtightening the headgear.

When should you replace a cushion?

There is no single replacement date that suits every CPAP user. How long a cushion lasts depends on how often you use it, your cleaning routine, skin type and how carefully it is handled. Some people need replacements more regularly than others.

Look for practical changes rather than relying only on the calendar. Replace your cushion if it becomes cloudy, yellowed, cracked, sticky, stiff or misshapen. Persistent leaks, a seal that only works when the straps are pulled tight, and new skin discomfort can also point to wear.

Daily cleaning helps, but using harsh products can shorten the life of silicone. Follow the cleaning instructions supplied with your mask and allow the cushion to air dry fully. Avoid moisturiser or heavy facial products where the cushion touches your skin before bed, as they can affect the seal.

Keeping a spare cushion at home is a useful safeguard. A worn cushion does not always fail gradually, and having a replacement ready can prevent a disrupted night of therapy while you wait for a new part to arrive.

A better seal does not always mean tighter straps

When leaks start, it is natural to tighten the mask. This can make matters worse. ResMed AirFit cushions are designed to inflate gently against the face as air pressure builds. If the straps are too tight, the cushion can flatten and lose the flexible edge that creates its seal.

Start by washing and drying the cushion, then refit the mask while your machine is running. Adjust the straps in small, even movements. The mask should feel secure but not clamped to your face.

If a leak is concentrated around the bridge of the nose, the cushion may be the wrong size, positioned too high, or simply worn. Leaks around the mouth can be more complicated. A full face mask may be suitable for people who breathe through their mouth during sleep, but this is not automatically the answer for everyone. Your comfort, prescribed therapy and advice from your sleep team should guide any major mask change.

Small checks that can prevent leaks

Before replacing a cushion, check that it is fully clicked or pressed into the mask frame and that the frame is not damaged. Inspect the headgear as well. Stretched headgear can make a new cushion seem ineffective because it no longer holds the mask steadily in place.

Clean skin and a clean cushion are equally useful. Even a thin layer of natural skin oil can reduce grip. If you use a mask liner for comfort, make sure it is compatible with your mask style and that it is not interfering with the seal.

Genuine or compatible replacement cushions

Many CPAP users choose genuine ResMed replacement cushions because they want the same materials, design and fit they know from their original mask. That familiarity can be particularly reassuring when therapy is already working well.

Compatible alternatives can offer a lower-cost option for some mask models. The best choice depends on the exact product, your budget and how sensitive you are to small differences in feel or fit. A compatible cushion should clearly state the mask model it is intended to fit. It should never be presented as a universal substitute.

For an essential nightly item, clear compatibility information matters more than a vague promise that a part is similar. At CPAPsavers, the aim is to make it straightforward to compare branded and compatible replacement options, so you can choose what suits your therapy and budget.

Make replacement easier on yourself

Once you know your mask model and cushion size, keeping on top of replacements becomes much less complicated. Consider noting the date you first use a new cushion. If you begin to see a familiar pattern of leaks or discomfort after a certain period, you will have a better idea of how often you personally need to replace it.

It also helps to inspect the cushion when you clean it. A quick check for changes in shape, texture and colour can catch wear before it starts affecting your sleep. If you are unsure whether a problem is caused by the cushion, frame, headgear or pressure settings, do not make big changes blindly. Your CPAP provider or sleep clinic can help rule out issues that need clinical advice.

A fresh, correctly matched cushion is a small replacement part, but it has a big job. When your mask feels comfortable enough to put on without a second thought, you are giving yourself the best chance of sticking with the therapy that helps you sleep better.