Though the machine seems to be working fine, I have two recommendations for improvement: 1) better mobility. The two wheels on one side mean tilting the machine to move it and it is very cumbersome. 2) product information is lacking: there should be more information interpreting the reasons for color changes and use of other controls.
I like the looks and the quality of the unit. The product had very good packaging to prevent damage.
I don't think that the fan blows hard enough. Therefore, I am doubtful that the unit actually covers the advertised area of 1300 sq. ft. Since day one, the air light indicator shows blue 99% of the time. I live in Colorado in a fire/smoke area. Based upon the above and price, I probably would not purchase this unit again.
Your purifier was recommended by a client after we all survived the Creek Fire in California. I have never owned a purifier and so far I am very pleased.
What a difference! Detects when the air quality changes and adjust to correct. Very happy with it. This is my second Alen. Started with T500 and added the 75i. Very quiet.
We move it from room to room, as we await a slightly different model to be back in stock... let's us sleep with fewer sinus problems at night, handles the smell from three cat boxes during the day. Very quiet, too! Love this purifier!