As the 3-in-1 Air Washer with natural humidifier and anti-bacterial air filter function, this emits Nano Plasma Ion (NPI) and can be used in all seasons. One operation supplies water and cleans the internal evaporator module and is easy to manage from hygiene perspective. Hidden parting structure is firm and clean with good finishing and matches well with various interior environment. Non-spray processing is environment friendly and safer, it also reduces recycling cost for disposal. Natural evaporation type humidifier disk can be used safely and permanently by washing, without extra cost.