Hello! Are you aware that Levoit’s claims that they use True Hepa filters in their products has been challenged: https://bbbprograms.org/media-center/dd/vesync-hepa-air-purifiers

As a result they updated all of their postings on Amazon.com in the US, but not in Canada and the UK. Since their products are likely coming all from the same manufacturing facilities, it’s a given that they are not using true hepa filters in Canada and the UK. I understand that the “true hepa” standard doesn’t tell the whole story about the product but can your testing demonstrate if their filters are true hepa or not?

Hey AntoineD, thank you for bringing this to our attention. At this moment we currently don’t have the resources to confidently test or prove what is True HEPA and what isn’t. Thank you again for reaching out, cheers!

Hi. I was looking at the Vital 100s which Levoit markets as an air purifier for “large bedrooms” upto 1110 Ft². I was comparing it with the 200s. Do the performance of these purifiers scale linearly with size? I guess what I’m asking is that is there a minimum size these things should be to actually do their job, and does the 100s qualify for this. For reference the 100s has a volume of 16.3 x 32.5 x 40.9 Centimeters and weighs about 3kg (the 200s weighs in at about 6kg). My assumption is that there’s a significant difference in air intake between the two models.

Aug 02, 2024 09:05 AM By greengear

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Hi. I was looking at the Vital 100s which Levoit markets as an air purifier for “large bedrooms” upto 1110 Ft². I was comparing it with the 200s. Do the performance of these purifiers scale linearly with size? I guess what I’m asking is that is there a minimum size these things should be to actually do their job, and does the 100s qualify for this. For reference the 100s has a volume of 16.3 x 32.5 x 40.9 Centimeters and weighs about 3kg (the 200s weighs in at about 6kg). My assumption is that there’s a significant difference in air intake between the two models.

Heya greengear, appreciate the question! While we haven’t tested the 100s, I’m absolutely going to lean in the direction of you being correct in that there’s a significant difference in the volume of air that it can intake compared to the Vital 200s (which in turn means that there’ll be a significant delta in performance). That isn’t to say that the 100s is too small to be of any use. Judged purely off of advertised specifications, the 100s seems fall somewhere between the Levoit Core 200s and Levoit Core 300s, and it shouldn’t have too much trouble in small or medium-sized rooms - think bedrooms or home offices, while the Vital 200s is meant for larger open-concept rooms.

Now, with that out of the way, I wouldn’t necessarily say that air purification rate necessarily scales in a direct fashion with size up to a certain point though (case in point: the Levoit Core 600s is approximately 44% larger than the Levoit Core 400s, but doesn’t offer a meaningfully higher air cleaning rate) but there’s absolutely a pretty intuitive link between unit size and capability when the difference is that substantial: bigger bodies allow for a larger filter area and a bigger, more powerful motor for drawing in more air.

Hope this was useful to you, and please don’t hesitate to reach out again if you have any additional questions or concerns!

Hi RTINGS! Thanks for this review. As Levoit isn’t using a true HEPA filter, how much do you think this really matters? I’m guessing it still captures particles that carry viruses etc., so the clean air it delivers still meets what most would consider acceptable?

Hey Husky, great question, HEPA does matter, it is the “Gold Standard” with its proven effectiveness in capturing a broad range of airborne particles. However in our testing, we found the filters on the Levoit to also be effective with filtering out small particles. To answer your question, the clean air it delivers meets what is considered acceptable.

Is it different from Vital 100S, or the 200s for larger places

I wish you had an air filtration rate at certain DB available. I don’t personally care if an air purifier filters air faster if it’s 70db. you do mention the noise at different fan speeds but not the filtration rates

Nov 21, 2024 09:59 PM By ameliabuns

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I wish you had an air filtration rate at certain DB available. I don’t personally care if an air purifier filters air faster if it’s 70db. you do mention the noise at different fan speeds but not the filtration rates

Hey ameliabuns!

You are bringing up a great way to improve our test bench! We might look to add this to our review in a future test bench update but we can’t make any guarantees at this time regarding a timeline for this.

Thanks for reaching out Pierre-André

Great write up! Could you consider adding PM 2.5 to your test results? I have a 3d printer and I’m trying to evaluate what air purifier does best at removing harmful PM 2.5 from my air. Not sure if you have a recommendation for this use case?

Jan 19, 2025 11:04 AM By educatedpickle

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Great write up! Could you consider adding PM 2.5 to your test results? I have a 3d printer and I’m trying to evaluate what air purifier does best at removing harmful PM 2.5 from my air. Not sure if you have a recommendation for this use case?

Hi austinyuan!

We currently test for particles 1.0 microns and smaller. PM2.5 takes into account larger particles than we test. If the air purifier is good for 1.0 microns, 0.5 microns and 0.3 microns, chances are that it would be good for bigger particles.

As for recommendations, here is a table that I made. It takes into account the Particle Filtration Rate, the Particle concentration (takes into account how low the air purifier is able to bring the particle concentration in the room in counts/Liters) and finally the dimensions of the air purifier to make sure that it can fit close to your 3D printer! I sorted the table by Particle Filtration Rate (best to worst) but feel free to play with the table to best suit your needs.

Thank you for your comment and interaction, these are always fun to read and reply. Have a good day

Pierre-André

I think the biggest shortcoming of the current test methodology is that it does not include the cumulative clean mass (CCM) and the purifier’s performance for gases (such as formaldehyde and benzene).

A comprehensive performance test should include the following six parameters:

1. CCM for particles
2. CCM for gases (or formaldehyde)
3. CADR for particles
4. CADR for gases
5. Final particle concentration
6. Final gas concentration

Currently, your test only includes parameters 3) and 5). https://www.iqair.com/us/newsroom/measure-air-purifier-long-term-performance-ccm?srsltid=AfmBOopuRq_ZaR1GqePZhawIsZm4ntwtzYZgjmLw4e7LPrXYYFRZ5ykU

Hi CheneyQWER,

Thanks for reaching out with what you would like to see added! You’re right, the first iteration of our air purifier test bench is focused around CADR and final particle concentration. While this test coverage is a good start we are aware that there is a lot of expansion possible to make our reviews even more in depth. Since we want to improve them over time, I’ve taken note of your suggestions and we will definitely consider them once we start expanding our air purifier reviews. Thanks again for reaching out and do not hesitate if you have other suggestions you would like to see added.