3 Okaysou Air Purifier Reviews: Are They Any Good?

Okaysou are pretty much the best bang-for-your-buck air purifiers.

This cannot be stressed enough:

The one thing that constantly came up in writing this Okaysou air purifier review is, “I can’t believe how great filtration system AirMax8L has. It’s only $120. You shouldn’t be able to get Medical Grade HEPA filters for that, much less the whole Ultra-Duo filtration system for 120 bucks.”

Mind you, the low price of Okaysou air purifiers might sound amazing for some. For us, it’s primarily disconcerting. Such a low price might indicate low performance, use of low-quality materials, or both.

performance of okaysou air purifiers
As we’ll see further on, performance-wise, Okaysou air purifiers are quite solid.

Okaysou AirMax8L – the best Okaysou air purifier (based on 1000+ 5-star reviews) – has a CADR rating of 210, same H13 True HEPA filters (with Ultra-Duo system, no less), and 32-49 dB noise levels.

Alen BreatheSmart FIT50 is one of the best air purifiers in the world. Alen FIT50 also costs $550.

Okaysou AirMax8L is, performance-wise, almost identical to Alen FIT50. And AirMax8L costs $120.

Does Okaysou really produce $500+ air purifiers that are being sold for less than $200?

LearnMetrics has checked if Okaysou air purifiers are really too good to be true, or are they the real deal (and why they might be so cheap).

Critical Review Of Okaysou Air Purifiers

As we will see in the spec-by-spec comparison of 3 Okaysou air purifiers, their performance is equally pretty solid.

okaysou medial grade ultra duo filters
High specs (200+ CADR rating) are a direct consequence of superb Medical-Grade H13 True HEPA filters.

That leaves only one culprit for such a low price of AirMic4S, AirMax8L, and AirMax10L Pro Smart:

Lower quality materials of used (and hence unreliability).

If you look under the hood of AirMax8L, you can quickly see one thing: The use of hard plastic is not ideal. Definitely, Alen and Dyson air purifiers are made of better materials. That should be a reason for the 500% price tag, right?

Well, the truth to the matter is that Okaysou uses only decent-grade materials to reduce production costs. But the important question is this:

Does the use of non-expensive materials significantly reduce the Okaysou air purifier’s reliability?

Surprisingly enough, not at all. If you sieve through all those Okaysou reviews, you will hardly find people who complain about the lack of reliability in the Okaysou unit.

materials okaysou air purifier are made out of
Okaysou air purifiers are primarily made out of hard plastics. This is not ideal, but hard plastic is a sturdy and reliable material made to last. And it comes at half the price of expensive carbon-based materials.

That’s quite positive feedback. In fact, to explain why Okaysou units are so cheap, we need to consider the dynamics of the air purifier market in the US. Here are the main characteristics:

  • Incredibly competitive. Okaysou seems to be competing with low prices.
  • Favors traditional brands such as Dyson and Alen. Okaysou has to reduce prices to become competitive additionally.
  • Air purifiers have to have an art-gallery level of design to be appealing. Okaysou design is boxy; people will pay fewer dollars for a not-great design.

Together we see that the air purifier’s market forces reduce the price of Okaysou by so much.

In short, there is nothing wrong with the performance or even materials. For people looking for a budget-friendly price-performance choice of air purifier, you can’t get a better or cheaper air purifier than Okaysou.

Just look at the advanced 5-stage AirMax8L filtration system:

airmax8l 5 stage filtration system with prefilter hepa filter antibacterial filter and so on
AirMax8L uses an above-average performance 5-stage filtration system. It consists of a pre-filter (for large particles), HEPA filter (for small particles), antibacterial filter (for bacteria), activated carbon filter (for odors like cigarette smoke), and even cold catalyst filter for adsorbing VOCs like formaldehyde.

With that in mind, let’s look at a spec-by-spec comparison of all 3 Okaysou models. After the comparison table, you will find an explanation of all the specifications. Further on, it would be best if you also read individual reviews of:

All in all, it’s pretty evident that the AirMax8L – the flagship Okaysou model – is the best price-performance air purifier on the market:

Comparison Of 3 Okaysou Air Purifiers

Okaysou Air Purifier: AirMic4S AirMax8L AirMax10L Pro Smart
Max. Coverage Area: 580 sq ft 800 sq ft 1000 sq ft
CADR Rating: 125 210 250
Fan Speeds: 3 Speeds 3 Speeds 3 Speeds
Certificates: CE, ETL, RoHS, CARB CE, FCC, ETL, CARB Energy Star, CARB, ETL, CE, FCC
Filters: Medical Grade H13 True HEPA (4 Options) Medical Grade H13 True HEPA Medical Grade H13 True HEPA (With 3 Filters)
Noise Levels: 24-51 dB 22-51 dB 24-51 dB
Air Purifier Price: $$$$ $$$$ $$$$
Average Rating: 4.4 out of 5 stars 4.8 out of 5 stars 4.7 out of 5 stars
Availability: Check Price Check Price Check Price

Okaysou Air Purifier Reviews

Thus far, we have established the following about Okaysou air purifiers:

  • They are made out of not perfect, but decent materials.
  • Their specifications are similar to $500 air purifiers.
  • They do cost less than $200.

Before checking individual reviews, let’s talk about the ins and outs based on which we can truly review Okaysou air purifiers:

Unique Filtration System

Air purifiers are basically fans that push polluted indoor air through a HEPA filter. There are quite a few advancements to this general model, but we didn’t expect below $200 would have any of them.

The 5-stage filtration system is definitely unexpected. 5 stages include prefilter, HEPA filter, antibacterial filter, activated carbon filter, and cold catalyst filter for formaldehyde.

As such, Okaysou filtration system is surprisingly well-thought-out. This is largely due to two factors:

The first one is the nature of HEPA filters. This is not an ordinary cheap HEPA filter; Okaysou uses exclusively medical-grade Ultra-Duo H13 HEPA filters (the best ones). There are designed to remove more than 99.7% of particles that are 0.3 microns in diameter.

In short, it can remove small dust, pollen, pet dander, smoke, odor, dust mites, mold, asbestos, even anthrax.

Here is a comparison of ordinary True HEPA filters and Okaysou’s Ultra-Duo H13 HEPA filters:

difference between standard

The second factor that makes Okaysou unique is choosing a HEPA filter based on your needs.

You can choose a HEPA filter that works especially well for:

  • Pet allergies (white Ultra-Duo HEPA filter).
  • Germ defense (blue Ultra-Duo HEPA filter).
  • Toxin absorption (green Ultra-Duo HEPA filter).
  • Odor removal (yellow Ultra-Duo HEPA filter).

You can see all types of HEPA filter you can choose from here:

filter choices for okaysou air purifiers

Example: If you want to buy an air purifier to reduce the smell of cigarette smoke, you can choose the yellow Odor Remover filter.

If, on the other hand, you’re fighting mold infestation, the best Okaysou filter would be the green Germ Defense filter.

All in all, the filtration system is always the most important part of any air purifier. Okaysou has a superb HEPA filter, 5-stage filtration system, and you can even choose a HEPA filter for your specific needs. Overall, this makes the bigger Okaysou model one of the best H13 HEPA filter air purifiers.

CADR Rating And Coverage Area

The CADR rating is usually the most important metric when it comes to air purifiers. Okaysou air purifier’s CADR rating ranges from 125 for smaller AirMic4S to 300 for the bigger AirMax10L Pro Smart. In the middle – having the sweet spot of 210 CADR rating – is the flagship AirMax8L.

With that 300 CADR rating, the big AirMax10L almost made it to the list of the best air purifiers for smoke.

The coverage areas Okaysou recommends quite interesting. Producers usually want to write the biggest possible coverage area in the specification sheet; that’s why they use 2 air changes per hour (ACH) in the calculation.

Okaysou went beyond that standard and used ACH 3. Okaysour air purifiers are strong enough to change the air in a coom with a recommended coverage area three times per hour.

Example: Okaysou AirMax8L’s coverage area is 500 sq ft. That means that the air purifier will change all the air in the room every 20 minutes (or 3x per hour).

Noise Levels

No one loves a noisy air purifier. With Okaysou, given how little it costs, you might expect all that hard plastics will produce quite a lot of noise.

Not so, really.

The quietest Okaysou model is the flagship AirMax8L with 49 dB maximum noise levels. The big AirMax10L can reach 56 dB, it’s true. But that’s quite in line with other more known premium brands such as Medify Air.

In general, Okaysou air purifiers are unexpectedly silent.

With all that in mind, let’s look at individual specifications and reviews of the 3 air purifiers Okaysou makes:

1. Okaysou AirMic4S Review (Best For Small Rooms Up To 300 sq ft)

review of small okaysou air purifier airmic4s


Price: $$$$

Average Rating: 4.4 out of 5 stars

Coverage Area: 580 sq ft
CADR Rating: 125
Filters: Medical Grade H13 True HEPA (4 Options)
Certificates: CE, ETL, RoHS, CARB
Noise Levels: 24-51 dB
Dimensions: 8.7″ x 8.7″ x 11.9″
(L x W x H)
Weight: 6.6 lbs

Okaysou AirMic4S

  • Works very well in small spaces (can achieve 3 ACH in rooms up to 300 sq ft)
  • With 6.6 lbs, it’s very lightweight and thus the most portable Okaysou air purifier
  • Has a number of certifications; including CE, ETL, RoHS, CARB certificate
  • Get this; it costs less than $100. That’s the cheapest well-performing small space air purifiers you can get
  • Has a considerably low CADR rating of 125
  • Not made out of the highest-grade materials for air purifiers
  • Extensive 5-stage filtration system is a bit much for its small motor

2. Okaysou AirMax8L Review (Best And Most Popular Okaysou Air Purifier)

review of AirMax8L air purifier the best okaysou unit


Price: $$$$

Average Rating: 4.8 out of 5 stars

Coverage Area: 800 sq ft
CADR Rating: 210
Filters: Medical Grade H13 True HEPA
Certificates: CE, FCC, ETL, CARB
Noise Levels: 22-51 dB
Dimensions: 12.9″ x 7.1″ x 19.4″
(L x W x H)
Weight: 13.7 lbs

Okaysou AirMax8L

  • Flagship Okaysou air purifier; the one with 1000+ 5-star review everybody loves
  • Has decent 210 CADR and medical-grade HEPA, it has the perfect performance rating
  • With 32-49 dB noise levels, it’s the quietest Okaysou air purifier by far
  • It’s a $500 air purifier according to specs, but it costs only $120
  • Doesn’t have the brand recognition or high-grade materials like Dyson or Alen devices
  • Doesn’t spend a lot of money on design; hence the cheaper price

3. Okaysou AirMax10L Pro Smart Review (New, Bigger Air Purifier)


Price: $$$$

Average Rating: 4.2 out of 5 stars

Coverage Area: 1000 sq ft
CADR Rating: 250
Filters: Medical Grade H13 True HEPA (With 3 Filters)
Certificates: Energy Star, CARB, ETL, CE, FCC
Noise Levels: 21-51 dB
Dimensions: N/A
Weight: N/A

AirMax10L Pro Smart

  • The biggest Okaysou air purifier (new model) with a 300 CADR rating
  • Can cover larger rooms up to 600 sq ft
  • We don’t have many reviews on it yet (new model)
  • Certificates are currently somewhat lacking; only the ETL certificate present in the specification sheet
  • Noise levels are a bit high (56 dB max) compares with AirMax8L

Okaysou Air Purifier Stand Up To The Test

When we first wanted to review Okaysou air purifiers, the general opinion was that they couldn’t be good if they cost only $100 or so.

However, specs-wise, they are not only decent but quite exceptional. The price is so reduced because you don’t pay for a well-known brand, fancy design features, or advanced technology.

All in all, it’s not difficult to see why Okaysou AirMax8L is one of the best-selling and most popular air purifiers in 2022 and 2023. For all other information and potential Okaysou deals, you can turn to their official website here.

It’s not many times that such a distant price-performer comes to our desk, and Okaysou is a rare positive exception we had the pleasure of assessing.

Some other similar brands of air purifiers include Levoit, Winix, Honeywell, and Medify air purifiers.

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