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        Neeraj Jain        (Nov 28, 2018)
     on Amazon     I installed it in Noida in my children room and found that the PM2.5 level was above 150, within minutes it brought it down to 20. It is also very silent and does not create much noise. 
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        Akhil        (Dec 10, 2020)
     on Amazon     A very efficient product. On Diwali night pollution was at extreme in NCR region. It showed a reading of 999 AQI (it can't show >999 as display is only 3 digits). and with in 40 minutes it made it less than 100 AQI for a room size 12x16 sq feet. In regular uses it makes it less than 50 in 15 minutes.Becomes very silent once AQI comes under control.Night mode leaves a single indicator ON. which is good.Its slightly bulky if your usage requires to move from one room to other often. 
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            Very effective & ensures quickest cleaning             
                
                
             
Bhaskar        (Sep 24, 2021)
     on Amazon     Sleep mode is super silent 
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        Swetha        (Jul 19, 2020)
     on Amazon     Excellent value for money good quality air purifier 
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        B N Paul        (Dec 29, 2019)
     on Amazon     Consider incorporating informationin the installation sheet about the sequence and direction of filter placement in the filter slot. 
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