Koios Review

Air Purifier
Three stages of filtration (Fine Preliminary, True HEPA, Activated Carbon filters) tackle 99.97% of particles and odors. Enjoy a cleaned-up breathing space all around it!
KOIOS Air Purifier

Desk Air Purifiers for Allergies and Pets

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

KOIOS Air Purifier

Mark Johnson
Mark Johnson
Last Updated:  Jun, 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 Jun, 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


  • The modern, travel-ready air purifier.
  • The device and app both are easy to set up.
  • Perfect for your office desk.


  • Works well for small space, expensive replacement filter.

Key Features

  • Neutralizes Air Dust – Fine Preliminary Filter neutralizes air dust and improves air quality in your room..
  • Eliminates Odors and Smoke – Activated carbon filter eliminates various household odors such as cooking smells, pet odors, and cigarette smoke..
  • Captures Pet Dander – Preliminary filter helps neutralize airborne bacteria, pet dander, mold & fungi..
  • Traps Allergens – HEPA helps get rid of common allergy triggers including dust mites, pollen, mold, and other large particles.
  • Nightlight Function – The night light can be turned ON/OFF via click the button. Cleans your air and lights up your path. Great for a nightstand in bedroom or on a side table..

Useful Product Info

  • Product Dimensions: 7.5 x 6.9 x 6.9 Inches
  • Product Weight: 2.1 Pounds
  • Product Color: White

Common Questions

  • What is the max square footage which this can handle?

Using in a room 10x9

  • How is it powered? Can this be used overseas in a 220 V ac situation?

It's powered by ac plug which is standard 110v , we suggest to use a voltage transfer when you want to use it in 220v situation.

What Others Think

At the time of writing this review, there were:

  • 2604 Customers
  • Who Gave it a Rating of 4.5 Out of 5.

What's Included?

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

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

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


Our Rating: 9.2/10

IQAir Health Pro Plus​


Our Rating: 9.4/10

RabbitAir MinusA2​


Our Rating: 9.0/10

Winix 5500-2


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.

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