Make sure your mask is fitted correctly. Use a mirror to make sure the mask is symmetrically secured on your face. You can run a Mask Fit Test for confirmation by selecting this menu option on your CPAP device. Be aware, the pressure used during the test is often higher than what you will experience during your therapy. Refer to each device’s troubleshooting section for how to run the Mask Fit Test or ask your Sleep Therapy Consultant for more information.