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I thought this might have been another one of my failed purchases but it does exactly what it says. It can cool a small room - even my study that gets the afternoon Australia Summer sun was noticeably improved.
You have to be patient as it will take a few hours to improve the room.
It’s not going to give you the chill of a split system air conditioner but it makes the room much more bareable.
The only thing the manufacturers should work on is a) having a light-free operation considering it’s a personal fan and will be used right next to your face on the bed side table. B) developing a quieter fan when on high - but I think this one is just being nit picky on my part. I think the low setting is super quiet but so weak I wonder that it might not be for cooling, perhaps it’s purpose is more to slightly humidify and improve the air quality (you would have to put it next to your face while sleeping... if you can stand the light shining on you!). The medium setting is reasonable for cooling the immediate area if you like white noise to sleep with, like I do. You could have it on your bedside table on this setting. The high does the best job but is pretty loud so I put it about 5 feet away from my bed as it can wake me otherwise.