KOIOS Air Purifier for 861 sq ft Large Rooms - Perfect for Home Air Quality

K. Long: We’ve been running two of these upstairs in different rooms of our house for at least 2 years. At the 1.5yr mark I went to change the filter and realized it was inside wrapped in plastic still. I was so angry, I had relied on these filters to clear the nasty air after my cats used their litter box, and had a baby in the house I was hoping to keep the air clean for. So anyway. They work a lot better when the filter is not wrapped in plastic.

United States on Nov 14, 2023

Barry M: To turn off the light touch the fan speed button for 3 to 4 seconds. Presto the light turns off and the speed is unaffected. Read the instructions! This is an excellent unit. I bought 2.

United States on Oct 31, 2023

Rachel Mxxxx: The Good:
Coverage seems to be as advertised.

Works super well in normal sized bedroom/dorm room! After just an hour the stinky sock, gym bag smell was greatly improved in my son's room. I left it on for a 4 hour cycle and it made it seem like it was spring and I had the window open. Wish so bad some people had this in college!

This was also used to remove residual smoke smell from wildfires. We were waking up with scratchy throats and stuffy noses. After running the units on an 8 hour cycle (very large room) we quit sneezing and woke up with clear sinuses. Life saver!

The Bad:
Originally purchased 2 units based on square footage for a large kitchen/living combo. They were very effective when working together, but with both units on, it created so much white noise we had to nearly yell to have a conversation, and the TV volume always gets turned way up. I tried running the units on a slightly overlapping schedule, but they are not as effective on their own for the square footage I had them in.
If you are thinking of purchasing 2+ for a large space, it might be worth it to take a look at larger units designed to handle the square footage.

One...

United States on Oct 02, 2023

Grandparents: Stopped working after two months called the number listed and got some strange savings line person who was no help
Scam or what ??
Now what I’m out the $100 seems like bad business to me I will not call the numbers listed by will try the email on the box
Hoping for a resolution as this was a gift to my daughter and family :(

United States on Aug 16, 2023

JoyJoy: The media could not be loaded.  I am a CA resident and always have the exposure to wildfire pollution and dust, I browsed a couple of air purifiers on Amazon and I find this Koios one at the best value - good price, large coverage area, the design perfectly fits my home.
The designs are very modernized, and buttons are touch sensitive. And I love the blue light on the unit, soft and pleasant. Build quality is solid as well.
And my favorite part is the unit runs quietly - speed 2 are the default mode and I have no trouble of falling asleep with speed 2 on. And I won’t even hear anything on sleep mode or speed 1. Speed 3 has a bit of noise but it’s totally tolerable.
Overall its a great purchase and I highly recommend this product.

United States on Oct 18, 2021