Koios Review

Air Purifier
The Koios Air Purifier features the three stages of filtration (Fine Preliminary, True HEPA1, Activated Carbon filters2)that tackle 99.97% of particles & odors. It allows you to enjoy a cleaned-up breathing space all around!
KOIOS Air Purifier

Review Feature Summary

  • True HEPA air purifier.
  • 360° Deep purification.
  • Easy operate.
* On special until end August 2020

KOIOS Air Purifier

Mark Johnson
Mark Johnson
Air Quality Expert
Last Updated:  Aug, 2020
Rated from 11157 reviews.

I think you’ll agree with me when I say:

It’s REALLY hard to choose an air purifier with all the options available!

Or is it?

Well, it turns out, that after years and hundreds of hours of testing & reviewing, we have strong opinions about what makes the best air filtration system: level of purification, efficiency, and maintenance.

The KOIOS Air Purifier (On special until end Aug, 2020) has all the qualities and features, giving it an added advantage and an edge over its competitors.

Quick Summary of the Koios

The unhealthy air quality caused by smoke makes PM 2.5 skyrocketed, which gets into your respiration system. Wildfire smoke can be especially harmful to the elderly, pregnant, children, and those with chronic diseases like an asthma attack and lung diseases. Unfortunately, the smoke from California wildfires is reaching the East Coast through strong winds called the jet stream. Here’s what that means for the air near you. Tens of millions of residents’ health gets threatened.

The Good & the Bad


  • Compact & Portable
  • Easy to Set Up
  • Perfect for Office Desks & Small Spaces


  • Works well for small space, expensive replacement filter.

Key Features

  • Neutralizes Air Dust – The Fine Preliminary Filter neutralizes air dust & improves air quality in your room.
  • Eliminates Odors & Smoke – Activated carbon filter eliminates various household odors such as cooking smells, pet odors, & cigarette smoke..
  • Preliminary Filter – Helps neutralize airborne bacteria, pet dander, mold & fungi..
  • HEPA Filter– It helps get rid of common allergy triggers including dust mites, pollen, mold, & other large particles.
  • Nightlight Function – You can turn on/off the night light via click the button. It cleans your air & lights up your path.

What's Included?

Here's what you get when you buy this Air Purifier:

  • 1 User manual
  • USB-C charging cable
  • 1 AC adapter
  • 1 True HEPA & activated carbon filter
  • 1 air purifier

Common Questions

  • What is the max square footage that the Koios Air Purifier handle?

The max it can handle is a room of 10x9.

  • How is the Koios Air Purifier powered? Can you use it overseas in a 220 V ac situation?

It's powered by ac plug3 which is standard 110v. You should, however, use a voltage transfer when you want to use it in 220v situation.

âś… Who Makes The Best Air Purifier?
âś… What Is The Best Air Purifier?
âś… What Is The Best Location For The Air Purifier?
âś… What Is The Best AC Filter?

Our Verdict

The unit is an amazing air purifier, his thing works perfectly, is a nice size, and is super light to carry. It also has a blue light to indicate when it's on.

What to Look for in a New Air Purifier?

If you’re in the market for a new Air Purifier, you’re probably looking at the different options and wondering which is the best one to choose.

Don’t worry, we’ve got you covered. Our reviews are based on the following features:


Only the most effective purifiers make the cut.

Noise Level

So there's more clean air and less noise.


Because you need a machine that’s built to last.

Ease of Use

It needs to be easy to use and easy to clean.


The Top Air Purifiers We've Reviewed


IQAir Health Pro Plus

Our Rating: 9.2/10

IQAir Health Pro Plus​


Rabbit Air A2

Our Rating: 9.4/10

RabbitAir MinusA2​



Our Rating: 9.0/10

Winix 5500-2


Honeywell 50250

Our Rating: 8.6/10

Honeywell 50250-S

Have you read our article on the air purifier for dust?

Or our article on the best hepa air purifiers?

Mark Johnson

Mark Johnson

Mark advises business, individuals, and organizations on how to use and get the best purifiers so as to maintain their offices and homes. For a fresher and cleaner environment, he is the man for you. He loves ideas and concepts and uses his skills to make them a reality.

Scroll to Top