What to do if your mask doesn’t fit right or leaks

What to do if your mask doesn’t fit right or leaks

If your mask feels uncomfortable or is irritating your skin, or if air is leaking out when you are wearing the mask, these are signs something needs to be adjusted, whether it is the size of the mask or possibly the type of mask you are using. There are several things you can first try to resolve the issue. If those don’t solve the problem, speaking with your doctor or equipment supplier is the next best step.

Tips for mask comfort and fit

First, make sure your headgear isn’t too tight, which can cause discomfort and pressure sores. Next, make sure you wash your mask after every use to clean off the dirt and oils that have built up and can irritate the skin. Use a mild soap, like baby shampoo or Neutrogena.® Note that using an ozone device with your ResMed products may discolor your mask during the limited warranty period and can cause internal damage to your machine, leading to an increase in motor noise. Damage caused by exposure to ozone, activated oxygen or other gases is not covered under the ResMed limited warranty.

In the event of COVID-19 diagnosis, read the American Thoracic Society’s tips on daily mask cleaning. Their informational guide includes additional information and resources on COVID-19 diagnosis and PAP therapy usage. Please refer to your specific ResMed User Guide for specific step-by-step instructions on cleaning your device and mask.


Mask leak is most often caused by incorrect adjustment, assembly, mask size or mask type. In addition, components that are worn and in need of a replacement are not as effective and could be causing the leak.

First, make sure your headgear isn’t too tight. Next, confirm you have the right mask size and type. If your mask has never fit quite right, it’s most likely a sign you have the wrong mask size or mask type for your face.

Many sleep apnea patients have also found nasal liners help with comfort and fit, so those are worth a try as well.

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