Coway Airmega review is missing units...

[Stephen304]

Hi all, I was checking out the Coway Airmega review trying to find the CADR rating and noticed that the numbers given in the review are missing units! It's super important to know whether the rating is in CFM or m^3/h since the conversion changes the number a lot.

I tried to leave a comment on the article but the comments section says you need to comment on the forum thread, and my comment there got removed so I'm not sure how I can comment on the article (it doesn't look like the article's comments are locked but the forum thread it directs you to in order to comment is now locked...), but I thought I would let you guys know since the lack of units makes it impossible to compare.

 

[COLGeek]

That review is a couple years old.

I suggest looking here for technical details of the product:

https://cowaymega.com/products/mighty-ap-1512hh

 

[Stephen304]

@COLGeek I do realize the review is dated, but I don't think that means it shouldn't be fixed of an important omission - especially when this unit is still a widely sold and popular model. (I picked up one from walmart last month and rtings reviewed the refresh model, which is identical in specs and only changes the front aesthetics, 2 months ago - so I hardly think this review is obsolete)

And yes I have seen that product page, but if you look you'll notice that page also lacks units, which is why I am searching for reviews to see if anybody has the actual number (or ran a benchmark and measured for themselves) so I can compare.

Anyhow, I just thought I would do the courtesy of pointing out the omission in the comments since many people would probably notice the omission and just move on without saying anything. Be the change and all that.

 

[COLGeek]

I don't see the original article getting updated. Nearly two years old.

Seems the link provided has the information:

1 air change/hr.* 1,748 ft² (162 m²)
2 air changes/hr.* 874 ft² (81 m²)
4.8 air changes/hr.*** 361 ft² (34 m²)

The notes are useful as well:

1. Coway air purifiers have been proven to trap dust, pollen, dander, viruses and bacteria in the air based on KCL (Korea Conformity Laboratories) testing.They have been tested in a 30㎥ size chamber according to the Korea Air Cleaning Association standard (SPS-KACA 002-132:2022 Modified) to measure the 0.01㎛ size of particle removal rate. It was tested on maximum airflow speed in normal room temperature and humidity conditions. The performance may vary in the actual living environment of customers.
→ Tested with Airmega Aim, 100, 150, 160, AP-1216L, AP-1512HH, AP-1512HHS, 200M, Icon, IconS, 230, 240, 250, 250 Art, 250S, 300, 300S, 400, 400S, ProX

2. 99.97% of viruses, bacteria, fungi and pollen were verified to be removed from the air for Coway air purifiers which have Green True HEPA™ filter applied based on the Japan Food Research Laboratories(JFRL) testing according to JEM 1467 standard.
→ Tested with Coway Airmega AP-1512HH, AP-1512HHS, 250, 250 Art, 250S, 300, 300S, 400, 400S
→ All tested by JFRL and received above result within below time.

All tested by JFRL and received above result within below time.

- Virus: Tested with Escherichia coli phage ΦX174 NBRC 103405, 60 minutes
- Bacteria: Tested with Staphylococcus epidermidis NBRC 12993, 60 minutes
- Fungi/Mold: Tested with Penicillium citrinum NBRC 6352, 60 minutes
- Pollen: Tested with Cedar Pollen extract, 60 minutes

3. Aerosol test conducted in a Biosafety level 3 laboratory with two Coway air purifier models, Coway Airmega 250 and 400 for removal of SARS-CoV-2 Aerosol by US based MRI Global, a not-for-profit laboratory and partner of US Department of Defense. The test was conducted in a 13.1ft3 chamber. Virus was aerosolized for 15 minutes and the product was turned on high for 2 minutes. Result showed each product effectively removed over 99.98% of the SARS-CoV-2 in 2 minutes. This is a result from a laboratory experiment condition and result may vary in different conditions. This result does not imply it kills SARS-CoV-2 or prevents the transmission of Covid-19. Coway Airmega 250S and 400S are identical to the tested models and has equal performance with an additional mobile connectivity function.

4. The concentration of ammonia, acetaldehyde and acetic acid were proven to be removed within 30 minutes by FCG Research Institute, Inc. Human Life Science Lab. It is not a demonstration result in the actual use space. Not all odors and gases may be supported. → Tested with Coway Airmega 150, 160, AP-1512HH, AP-1512HHS, 400, 400S

5. The coverage area of the air purifier is based on an area where the air cleaner can make two air changes per hour (ACPH). An air change per hour translates to how many times an air purifier can clean an area, assuming the height of a ceiling to be 8 ft, in one hour. Therefore ** means two air changes per hour means that the cleaner can clean the area once every 30 minutes and * means air changes per hour means that the air purifier can clean the area once every 60 minutes

 

[Stephen304]

I appreciate the effort in sharing the ACPH, but I meant that the CADR in the official specs are listed as "234 (Smoke), 248 (Dust), 232 (Pollen)" without units, which I assume is CFM based on the ACPH.

At any rate, I appreciate your help but I'm only posting here because I wanted to leave a comment on the article for future readers in case it doesn't get clarified - and the message I got about the comments being locked told me to create a thread.