It uses about half the water of a standard heated humidifier and much less energy.
*Battery operation time and humidification level may vary based upon humidification level, therapy pressure, breath rate, tidal volume, leak and altitude. Experience the comfort of heated humidification every night, everywhere*.**Please note this product is not eligible for the 10-night risk-free trial. NOTE: The use of distilled water is required for proper function of the heated humidifier.