The AirMini does not use a traditional water-based humidifier. Instead, it offers waterless humidification through small disposable cartridges called HumidX™, HumidX Plus, and HumidX F20.
These cartridges work by using a heat and moisture exchange (HME) system. As you exhale, the cartridge captures heat and moisture from your breath and stores it inside the filter material. On the next inhalation, this stored humidity is released back into the airflow, helping prevent dryness without needing distilled water or a water tank.
Compatibility depends on the mask: HumidX and HumidX Plus are designed for the AirFit N20, AirTouch N20, and AirFit P10 for AirMini, while HumidX F20 is required for the AirFit F20 and AirTouch F20 full-face masks. Humidification is not available when using the AirFit F30 with the AirMini.