Last updated on October 7th, 2022

Coway and Alen air purifiers differ in size, capabilities and price. It’s hard to select one of them and proclaim it a “winner”: before you do it you have to know for what purposes do you need an air cleaner. Is it because you have an allergy? Or is it because you live in a polluted area and you want to breathe clean and fresh air at home? Do you need auto function in an air purifier or you’re fine manual controls.

There are a lot of questions like this and I’m here to help you out. In this comparison I’m going to compare different air purifiers in the same price category manufactured by the Korean company Coway and the US-based (although production facilities located in China) company called Alen.

Key Takeaways

But before we go into model-to-model comparison, let’s take a look at the crucial differences between both companies that apply to all their air purifying units:

  • Coway manufactures air purifiers in the Republic of Korea, Alen in China
  • Alen has 60-days money back if the appliance is bought in their store
  • Coway air purifiers are cheaper, so you can expect the same performance levels for the smaller price
  • However, filters aren’t that sturdy and are generally run out of their air cleaning capabilities faster compared to the Alen’s
  • Alen sells custom HEPA filters, designed to target pollutants like smoke, allergens, dust, etc., so it’s possible to get the one you need in your specific situation. On the other hand, Coway air filters are more of a general use
  • Alen has a warranty period of 1 year for all their air purifiers whilst Coway usually offers 3-year warranty
  • Alen offers subscription for the filters delivery for 10% off. In addition, subscribers receive lifetime warranty on their air purifiers

Now that we have dealt with general differences let’s head over to the differences between the individual models. But before we go I want to point out the last thing: air changes per hour which you are going to encounter all the time in this comparison tables.

Air changes per hour – or ACH – mean how often the air is cleaned in one hour. This is a very relevant metric for people that have any breathing conditions, including asthma, allergies and so on. At a minimum rate, an air purifier has to be able to reach 4 ACH per hour to be considered effective in any way. For people who doesn’t have any health issues, this number goes down. I recommend visit the page ACH calculator & recommendations to get more familiar with it.

Enough talking, let’s see how Alen compares to Coway air purifiers!

Alen BreatheSmart 75i vs Coway Airmega 400

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Model
Alen BreatheSmart 75i
Coway Airmega 400
Image
Alen BreatheSmart 75i vs Coway Airmega 400
Coway Airmega 400 vs Alen BreatheSmart 75i
Reason to Buy
Filter Selection, WiFi
Lower Price
Price
Under $750
Under $650
Room Coverage (4 ACH)
651 sq. ft.
651 sq. ft.
CADR
347 CFM
350 CFM
Filter Life
12 months
12 months
Filter Replacement
~$100-140
~$120
Auto Mode
WiFi
Noise Levels
25 - 49 dB
22 - 55 dB
Max Power
1.8 - 45 Watts
6.2 - 66 Watts
Weight
27 pounds
24.7 pounds
Dimensions (L x W x H)
11.5" x 18.5" x 27"
14.8" x 14.8 x 22.8"
Review
More Specs & Review

As you can see from the table above, the reason why you prefer the Alen BreatheSmart 75i is the ability to control the air purifier with your smartphone via WiFi and also an ability to select one out of 4 (Pure, Fresh, Pet, or Heavy Odor) air filters designed to deal with specific kind of harmful particles. The Coway Airmega 400 also has a WiFi enabled model, I explain the difference the basic and WiFi models here.

Alen BreatheSmart 45i vs Coway Airmega 300s

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Model
Alen BreatheSmart 45i
Coway Airmega 300s
Image
Alen BreatheSmart 45i vs Coway Airmega 300s
Coway Airmega 300s vs Alen BreatheSmart 45i
Reason to Buy
Filter Selection, Lower Price
Bigger Coverage
Price
Under $450
Under $600
Room Coverage
460 sq. ft.
490 sq. ft.
CADR
245 CFM
260 CFM
Filter Life
12 months
12 months
Filter Replacement
~$70-100
~$85
Auto Mode
WiFi
Noise Levels
23 - 49 dB
28 - 52 dB
Max Power
1.1 - 50 Watts
6.2 - 57 Watts
Weight
15 pounds
21.4 pounds
Dimensions (L x W x H)
8.5" x 15" x 25"
13.6" x 13.6" x 20.9"
Review
Specs & Review

The Coway Airmega has a larger room coverage due to higher airflow, but overall it doesn’t have much to offer when compared to the Alen Breathesmart 45i. the latter is also has a lower price tag.

Alen BreatheSmart Classic vs Coway Airmega 400

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Model
Alen BreatheSmart Classic
Coway Airmega 400
Image
Alen BreatheSmart Classic vs Coway Airmega 400
Coway Airmega 400 vs Alen BreatheSmart Classic
Reason to Buy
Filter Selection
Bigger Coverage
Price
Under $650
Under $650
Room Coverage
560 sq. ft.
651 sq. ft.
CADR
300 CFM
350 CFM
Filter Life
12 months
12 months
Filter Replacement
~$60-120
~$120
Auto Mode
Noise Levels
42 - 56 dB
22 - 55 dB
Max Power
1.6 - 105 Watts
6.2 - 66 Watts
Weight
21 pounds
24.7 pounds
Dimensions (L x W x H)
10" x 17.75" x 26.75"
14.8" x 14.8 x 22.8"
Review
Specs & Review

Alen BreatheSmart FIT50 vs Coway Airmega 250s

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Model
Alen BreatheSmart FIT50
Coway Airmega 250s
Image
Alen BreatheSmart FIT50 vs Coway Airmega 250s
Coway Airmega 250s vs Alen BreatheSmart FIT50
Reason to Buy
Filter Selection
Lower Price, WiFi, Cheaper Replacement Filters
Price
Under $550
Under $400
Room Coverage
410 sq. ft.
465 sq. ft.
CADR
220 CFM
230 - 261 CFM
Filter Life
12 months
12 months
Filter Replacement
~$90-140
~$52
Auto Mode
WiFi
Noise Levels
32 - 49 dB
22 - 54 dB
Max Power
1.2 - 60 Watts
64 Watts
Weight
16 pounds
20.5 pounds
Dimensions (L x W x H)
10" x 16.75" x 22.25"
8.3" x 18.5" x 19.7"

Alen BreatheSmart Flex vs Coway Airmega AP-1512HH

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Model
Alen BreatheSmart FLEX
Coway Airmega AP-1512HH
Image
Alen BreatheSmart Flex vs Coway Airmega AP-1512HH
Coway Airmega AP-1512HH vs Alen BreatheSmart Flex
Reason to Buy
Filter Selection, Lifespan
Lower Price, Coverage
Price
Under $400
Under $300
Room Coverage
420 sq. ft.
460 sq. ft.
CADR
225 CFM
246 CFM
Filter Life
12 months
6 months
Filter Replacement
~$70-120
~$55
Auto Mode
Noise Levels
38 - 55 dB
24 - 54 dB
Max Power
0.8 - 56 Watts
4.9 - 77.8 Watts
Weight
15 pounds
12 pounds
Dimensions (L x W x H)
8.5" x 15" x 25"
9.6" x 16.8" x 18.3"
Review
Specs & Review

Hopefully, this Coway vs Alen air purifiers comparison will help you pick an air cleaner that fits your room and needs.

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