KOIOS EPI810 Air Purifier: Trusted Review & Specs

There are many low-end air purifiers from Chinese manufacturers on Amazon right now, and the KOIOS EPI810, or the KOIOS 3-in-1 True HEPA air purifier is the most popular, with more than 900 reviews. In Breathe Quality, we have a chance to experiment this air purifier, and write a proper KOIOS EPI810 Review.

This KOIOS EPI810 air purifier is also the most popular air purifier using KOIOS name, a real OEM air purifier that is used by many Chinese brands.

KOIOS EPI810 ranks C- in our air purifier ranking list. We give the biggest and most thorough database of air purifier reviews in the world.

In Breathe Quality, we have reviewed all air purifiers under these sections. Also, we guarantee that:

  • We do give honest reviews (both pros and cons) so anyone will guarantee to have the wisest choices.
  • We do not (and never) exaggerate one product just to let you click the links and buy that product blindly.


koios epi810 review

  • It’s so cheap
  • True HEPA filter being certified by CARB
  • Compact, easy to use

  • Weak fan power
  • Cheap design

KOIOS is another air purifier brand from Shenzhen – the Silicon Valley of China, just like Elechomes and Partu. Their website is bad-designed, so you should make your purchase on Amazon. The KOIOS EPI810 is the first and the most popular air purifier of this brand and thanks to our KOIOS EPI810 Review, you will be sure whether to buy it or not.

Other KOIOS’s Air Purifier Reviews:

1, KOIOS PM1220 Review.

2, KOIOS EPI209 Review.

KOIOS EPI810 Price

Putting aside the boring design and the silly-sounding brand name, KOIOS EPI810 is a simple, cheap yet decent air purifier to use for small rooms. This company isn’t serious to make big and broad air purifiers, with the higher cost. Instead, the KOIOS EPI810 is a perfect candidate to join the low-end budget, as people can just try it and forget it.

The same tactic is also applied for many other Chinese manufacturers, like what you see from the Elechomes EPI081. However, in terms of quality, the KOIOS EPI810 is a lot cheaper, and its price tag doesn’t hide this fact. So, with only $49 you can get the KOIOS EPI810.

Want a bigger device? You can look for the KOIOS EPI209, which we will make an in-depth review for this flagship of KOIOS soon.

You can find the Bissell MyAir, RENPHO RP-AP068, Partu BS-08 and Airthereal ADH50B as the alternatives for this price point. If you don’t need the fancy features, you can also look for the Levoit LV-H126, as the price can be even more affordable.

Top KOIOS EPI810 deals right now

KOIOS air purifier, indoor air cleaner with 3-in-1 True HEPA filter for home and office.

The KOIOS EPI810 – the most popular air purifier in budget list from KOIOS. Has a certification of CARB.

Related post: Best air purifier 2023.

KOIOS EPI810 Design and Size

A common method to build a minor brand, especially for a Chinese air purifier brand, is just copying well-known design and do some customizations. We can easily see the shape of the Envion Therapure TPP100 here, and yes, that’s how we have an American design homage.

The KOIOS EPI810 is so compact, with the height of 7.5 inches and the width of just 7 inches. If you have big pocket, you can easily carry this device around on you because it is just only 2 lbs.

Air purifier with cylindrical design like KOIOS EPI810 will easily use the bottom-to-top air flow system concept, with a 360° air intake. It is simple to install or uninstall the filter from the body.

We have only one button to operate this air purifier. Well, couldn’t expect more for an air purifier under $50, right?

koios epi810 review

Source: Amazon.com

Related post: Best air purifiers for bedroom.

KOIOS EPI810 Filters

KOIOS EPI810 is just a simple air purifier for people who don’t want to spend a lot of money, so it just uses a basic 3-stage air cleaning system as below.

  1. Pre-filter – The fine preliminary filter can remove any large objects with size bigger than 100 microns, like pet, lint and fur.
  2. True HEPA filter – Eliminates 99.97% of any particles as small as 0.3 microns, like pollen, mold spores, pet dander, dust or dust mites.
  3. Activated Carbon filter – Captures and neutralizes various household odors.

To test the performance of this air purifier, I made a simple run in a room of only 100 square feet, and let the KOIOS EPI810 run for 1 hour. I also have copies of Mooka EPI810 and Jinpus, which are also from Chinese manufacturers, to make a full comparison with this KOIOS EPI810. The result, our today unit is the weakest of all three air purifiers, as it had the efficiency of only 88% for trapping any particles down to 0.3 microns.

koios epi810 review

KOIOS is an air purifier brand certified by the California Air Resources Board (CARB) to meet the ozone emission safety of below 0.05 parts per million (ppm). There aren’t many certified Chinese air purifiers to be shipped to California, so you shouldn’t worry about this product.

You should use the genuine KOIOS air filter for replacement, every 6 months of use or less. The air filter is free if you register for a review on Amazon, explaining why this device gains so many reviews in just only 2 years.

Related post: Best air purifiers for allergies.

KOIOS EPI810 Room Coverage

KOIOS EPI810 is only suggested for 50 square feet, and you can’t find any recommendation from the KOIOS’s manual.

The ACH of KOIOS EPI810 is 2X. It is common for a portable air purifier to have only 2 air changes per hour.

The CADR of KOIOS EPI810 is only 30 cfm in general. That’s why the efficiency in just one hour of this air purifier is quite low, compared to the others.

Related post: Best large room air purifiers.

KOIOS EPI810 Sound

However, one selling point for a low-range portable air purifier is that it doesn’t cause much noise. The KOIOS EPI810 is completely suitable for bedrooms, so it only generates less than 50 decibels (db), even on highest speed.

But there are only 2 fan speeds on this air purifier, so it is still a bit noisy when operating. Remember to keep it on lowest if you are sensitive to sound.

Related post: Best air purifiers for baby.

KOIOS EPI810 Power Consumption

One of our most FAQs is “Do air purifiers use a lot of energy?” In fact, air purifier must be used for a long time to be efficient. And power consumption is one important criteria to review if this air purifier is good or not.

KOIOS EPI810 is compact air purifier to keep the power consumption as low as 5 watts, which is truly impressive to let it run 24/7 without any worry for your electricity bill.

If you use the KOIOS EPI810 for 8 hours per day, you need to spend just $2 each year.

Related post: Best air purifiers for pets.

KOIOS EPI810 Additional Features

We love additional features on not only air purifiers, but every technology products in daily use. The additional features are the selling point for many air purifiers, however, we can’t expect to have such luxury settings on a budget device.

The KOIOS EPI810 is so simple to operate, with only one button to turn on/off and change fan speed. It has a simple Night Light function, with blue light to be a perfect nightlight on a side table.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

KOIOS EPI810 Customer Service

KOIOS can rival other Chinese brands that sell air purifiers in the U.S market like Hathaspace or Inofia in terms of customer service. Although KOIOS’s website is a bit unfriendly, for any troubles you may encounter, you can contact them quickly via phone at 855-558-8777. Or you want to reach them via email, you should follow their Contact Us page and get the answer.

KOIOS provides a 3-year warranty and 90-day refund (including of shipping cost), so long as you activate your product after receiving the product. They also give you an 1-year technical support for free by activating the warranty.

Top KOIOS EPI810 deals right now

KOIOS air purifier, indoor air cleaner with 3-in-1 True HEPA filter for home and office.

The KOIOS EPI810 – the most popular air purifier in budget list from KOIOS. Has a certification of CARB.

Our verdict

KOIOS is a big brand for providing a lot of household appliances like air purifiers, humidifiers or vacuum cleaners. The KOIOS EPI810 is their pioneer air purifier, to fit in the budget under $50. It is good for the price, with a elegant Night Light function to be used in bedroom.

KOIOS EPI810 Air Purifier: Trusted Review & Specs in 2024
KOIOS EPI810 Air Purifier: Trusted Review & Specs

KOIOS EPI810 Reviews and Specs (Air Purifier Trusted Reviews in 2024). ✓ Cleaning Power: True HEPA filter ✓ 2 lbs ✓ Value: 2.8/5 ✓Certified Review

Product Brand: KOIOS

Product Currency: USD

Product Price: 49

Product In-Stock: https://schema.org/InStock

Editor's Rating:
  • Performance
  • Features
  • Annual Cost
  • Design
  • Price


KOIOS tries to appear in the world air purifier’s map.