Daikin Humidifying Streamer Air Purifier A high-quality model designed for long-term use. Filter replacement is possible. Both the dust collection filter and the humidifying filter are recommended to be replaced approximately every 10 years. Cleaned before listing. The humidifying filter was replaced just a year ago (end of 2023), so it's practically new and ready to use upon arrival. I think it can be used all year round, especially during the current pollen and yellow sand season, as well as for summer colds and influenza. ◇Product Description The Streamer powerfully decomposes odors and mold captured by the filter. The Streamer also irradiates the water used for humidification and the humidifying filter, suppressing the bacteria that cause slime in the water. Equipped with Active Plasma Ion technology. This ion technology suppresses mold and allergens. It also increases skin moisture. PM2.5 compatible. High airflow for quick and powerful suction. Powerful suction of house dust, odors, etc. ◎Things that can be captured, suppressed, and decomposed: Mold, pollen, allergens such as dust mites, odors, formaldehyde, diesel particulate matter, yellow sand, dust, NOx, etc. I purchased this when my baby was born and used it to prevent influenza and colds. It's an older model, but the operating hours are few, so I don't think there's much deterioration. It also has casters, making it easy to move and clean. I cleaned it frequently for my child, so I think it's generally clean, but due to the large size of the product, there may be some scratches and some areas that I couldn't clean completely. Please refrain from purchasing if you are concerned about minor imperfections. Operation has been confirmed without any problems, and it can be used cleanly without any odors. (^^)