In this quick article, we’re going to be looking at the AIRMEGA 300S, and the AIRMEGA 400S. Both of these air purifiers are very similar, but they also have their fair share of differences as well.

We’re going to look at those differences. Along with that, you’re going to learn which of these smart Air Purifiers is the best one for you!

Airmega 300S vs. 400S

Now, let’s begin by looking at the AIRMEGA 300S.

AIRMEGA 300S: The Smarter App Enabled Air Purifier:

Let’s start with the basics. This is a high-end Air Purifier. It’s relatively expensive, and as such, it’s only meant for people who want the best in air purification technology.

In terms of the Maximum Area Coverage, the AIRMEGA 300S can cover a total of 1,256 square feet. This is quite a bit of space. You can easily use this device to purify an entire apartment, or a living room as well as a dining room, for good measure.

Airmega 300S

Weighing just 21.4 pounds, this isn’t a particularly heavy air purifier, either. And on an aesthetic level, it is simplistic and sleek. You can put it anywhere, and it will mesh with any aesthetic that you have.

As for how the AIRMEGA 300S actually works, it uses three distinct filters to thoroughly, and effectively, purify your air.

First, you have the Pre-Filter. This Pre-Filter captures all of the larger particles. Particles such as hair, dog and cat fur, as well as larger chunks of dust. You can wash the Pre-Filter in the sink.

Second, you have the True-HEPA Filter. This particular filter is designed to take the particles left over from the Pre-Filter stage and to filter those out. Now, the word “HEPA” stands for – High-Efficiency Particulate Air. HEPA filters are designed to capture and get rid of very small particles. In the case of this filter, it can remove particles that are as small as 0.3 microns. This includes various pollutants, and things like pollen, among other allergens.

Third, you have a Carbon Filter that eliminates nasty odors. If you live in a place where there are various odors and stenches, this Carbon Filter eliminates those.

One of the reasons why this particular air purifier is so effective is because it pulls in air from two sides, not just one. Both sides – left and right – pull in dirty air. And then, this air goes through the filtration process and is sent out through the top of the air purifier.

Of course, the most notable feature of all is that this is a “Smart” air purifier. Using your smartphone or Amazon Echo, you can adjust the fan speed, schedule when the air purifier should be used, among other features.

Using your smartphone, you always have access to data regarding your air quality, the fan speeds, when the filter will need to be replaced next, along with other variables, as well.

This is one of the greatest features of all, because you always have complete control over what the air purifier is doing, and you always have access to the data the air purifier is putting together.

Airmega 300S Air Purifier

AIRMEGA 400S: The Smarter App Enabled Air Purifier

On the surface, there really isn’t that much to distinguish the AIRMEGA 400S from the AIRMEGA 300S.

For the most part, that is entirely true. You have the same basic features, the same design, the same aesthetic, and, of course, the same smartphone and smart home functionality.

Airmega 400S vs. 300S

Really, it’s just more of the same. But, if you liked what the AIRMEGA 300S offered, but it didn’t have the MAC – Maximum Area Coverage that you need – then the AIRMEGA 400S may be the solution.

Using the AIRMEGA 400S, you can purify a room/space that is up to 1,560 square feet. That’s quite a bit of space, and once again, the overall design is absolutely fantastic. There are no problems when it comes to the overall purification process. Everything is as efficient as the AIRMEGA 300S.

So, really, there aren’t any real differences between the two. If you liked the AIRMEGA 300S but needed something that can cover a larger space, and you don’t mind spending a little extra money than the AIRMEGA 400S is a great choice!

Airmega 400S


Both the AIRMEGA 300S and the AIRMEGA 400S are fantastic air purifiers. They have many great features, and they can get the job done efficiently, and effectively.

If you need something that can cover a larger area, then the AIRMEGA 400S is ideal. If you don’t, and just want the basic unit, then the AIRMEGA 300S is fantastic!

Airmega 400S Air Purifier

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