DAIKIN MCK70WKS-T Made in 2020 Purchased 3-4 years ago, used for about 2 years Non-smoking environment, has pets The humidifying function has not been used. The white filter (10-year replacement) is slightly discolored, so you may want to replace it if you are concerned. Ion type: Negative ions Smartphone app support: Yes Humidifying function: Yes (※※Not used※※) Automatic operation: Yes Applicable floor area class: Over 20 tatami mats Dust collection filter replacement support: Yes Air volume/class 1: 6.1-7.0 cubic meters/min