Today, we are taking a look at the AIRMEGA 400S. This is a “Smart Air Purifier” that comes directly from Coway. Now, AIRMEGA isn’t exactly one of the most popular air purifier manufacturers (however, Coway is), but the air purifiers they have manufactured are exceptionally well-made, and they offer a myriad of excellent features that you won’t find anywhere else.

AIRMEGA 400S The Smarter App Enabled Air Purifier Review

In this article, you’re going to learn what those excellent features are, as well as the overall benefits that the AIRMEGA 400S can bring you.

Now, let’s begin!

What Are The Features And Attributes Of The AIRMEGA 400S?

Let’s start off with the most basic feature. Using the AIRMEGA 400S, you can purify a room that is up to 1,560 square feet. Smaller rooms work very well with the AIRMEGA 400S, as well, but rooms that are bigger than 1,560 square-feet won’t be as clean or as purified as rooms that are as large, or smaller, than 1,560 square feet.

If you have a big home or a big space that you want to purify, then this is a fantastic Air Purifier!

AIRMEGA The Smarter App Enabled Air Purifier

Now, AIRMEGA has advertised the 400S as a “Smart Air Purifier”. In this particular context, it means a couple of things.

There is a “Smart Mode” feature that you can activate, with the press of a button. What this feature does is it turns on all of the different sensors that the 400S has been equipped with. Using these sensors, the 400S detects the air quality of your room, and then it feeds this data back into the device. From this data, the device adjusts the speeds of its fan to accommodate your room and its current air quality. You can see the quality of the air by looking at a small LED light that uses color to indicate how clean, or how dirty, your air is, at any given time.

Along with that, there is the “Coway IoCare” mobile app, for your smartphone and/or tablet. Using this application, you can access all of the data that the purifier is producing, such as the air quality, current temperature, the filter and when it needs to be replaced. You can also adjust the speed of fans, and create a custom schedule for the air purifier.

Features such as these are incredibly useful because they make the entire process of using the device and purifying your air much easier. You don’t have to input a bunch of different settings or variables manually. Instead, the device does all of that for you, which makes things much easier and much more efficient.

AIRMEGA 400S Air Purifier

As for how the air purification process actually works, it’s a simple process, but more efficient than most other Air Purifiers.

Dirty air is sucked in from two fans that are on the left and right side of the air purifier. Then, this air goes through two main filtration systems.

The first filtration system is that of the Pre-Filter. What the Pre-Filter does is it filters out all of the larger particles that are being sucked into the device. Particles such as pet hair, large clumps of dust, among other types. This prevents the purifier from clogging, and it also prevents the main filtration system from becoming jammed up.

After that, there is the second, and last, filtration system. This filtration system is known as the “Max2” and it consists of two main filters. The first is an activated carbon filter, and the second is a True-HEPA filter.


Now, the activated carbon filter gets rid of all of the nasty odors and stenches that certain particles bring. So, if your home has a lot of nasty smells and odors, this is a great filter to have.

Then, the True-HEPA filter takes all of the really small, very minuscule particles, such as allergens and various germs and bacteria, and filters those out. This particular filter can remove particles that are as small as 0.3 microns, which is very small. Because of this, you greatly reduce your risk of becoming sick, since the particles that often lead to sickness are being removed from your air.

AIRMEGA 400S Air Purifier Review


Ultimately, the AIRMEGA 400S is a very good air purifier that gives you a great deal of control over its features, while also fulfilling its main purpose, that of purifying your air, in a thorough and efficient manner.

If there is one flaw, it’s that this is a rather expensive air purifier, but you are paying for quality. But, do keep the price in mind, because this is definitely an investment.

AIRMEGA 400S The Smarter App Enabled Air Purifier

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