This is a prospective, multicenter, single-arm trial designed to evaluate the safety and effectiveness of the RXiBreeze PAP System to treat obstructive sleep apnea and detect breathing events. Eligible subjects who meet all inclusion criteria and none of the exclusion criteria will be consented for study participation. The study will enroll up to 68 subjects. Baseline PSG will be obtained. Subjects will return to the sleep lab and use the RXiBreeze PAP System while undergoing a PSG. The data from both the RXiBreeze PAP System and PSG from both nights will be sent to an independent core lab for blinded AHI scoring. Data will be evaluated in accordance with current American Academy of Sleep Medicine (AASM) scoring guidelines. In addition to the device/PSG data scoring, subjects will complete the Epworth Sleepiness Score (ESS) and the Functional Outcomes of Sleep Questionnaire (FOSQ) short form (10 questions) and be assessed for device- and/or therapy-related adverse events (AEs) at the end of each visit.