In different seasons, indoor air quality and humidity levels are different. Do you feel that pollen and other substances in spring make your breathing difficult and sensitive. In winter, when you warm yourself by a fire indoors, the indoor carbon dioxide concentration is relatively high, making you feel dizzy all the time. Do you need a multifunctional air purifier that can not only purify the room space, but also relieve the dryness of the room. Not only will it help relieve allergy symptoms, nasal congestion and sinus congestion, it will also effectively relieve dry skin and reduce asthma symptoms. Ultra-efficient evaporative humidification results in more consistent humidity levels without oversaturating the surrounding area. Color: White.