If you have ‘mouth leak’, air is escaping from your mouth during therapy. You might be opening your mouth during sleep out of habit or because your nose is blocked. As well as being noisy and uncomfortable, mouth leak can leave you with a dry mouth. You can download the myAir app for free. It’ll help you to manage leaks by sending you alerts when leak thresholds are exceeded and give you tips to help you correct leaks and mask fit issues. If you experience mouth leak occasionally, for example when you have a cold, try wearing a chin strap/chin restraint at those times to keep your mouth closed. If you experience mouth leak often, you may need to use a full-face mask. Full-face masks deliver air through your nose and mouth, so you’re covered whether you end up breathing through your nose or your mouth. We have a full-face mask in each of our mask categories: AirFit F30 minimalist mask, AirFit F30i freedom mask, AirFit F20 versatile fit mask.