Home ventilators with built-in software provide substantial information for monitoring home noninvasive ventilation, such as compliance, pattern of ventilator use, leaks, respiratory rate, percentage of respiratory cycles triggered and cycled by the device, and apnea-hypopnea index. Certain values are reliable and useful, however, reliability of data is not equivalent between all ventilators. The clinician should thus not rely only on these data for adjusting ventilator settings.