There’s a lot of debate over which filter level is best—H13 or MERV13. Commercial brands often claim H13 is superior, while CRbox suggests MERV13 is the better option. (1/7) - ThreadSky

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adamwong.bsky.social • 72 days ago

There’s a lot of debate over which filter level is best—H13 or MERV13. Commercial brands often claim H13 is superior, while CRbox suggests MERV13 is the better option. (1/7)

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adamwong.bsky.social•72 days ago

Before diving deeper, it's important to understand that if the CADR (Clean Air Delivery Rate) is the same for both air purifiers, they essentially do the same job, regardless of the filter level. As a customer, this means you should focus on the CADR rather than the filter level. (2/7)

adamwong.bsky.social•72 days ago

However, if you're making your own air purifier, filter choice becomes a key factor to achieve the highest CADR.
So, which filter is better? The answer depends on two main factors: the total surface area of the filters and the combined P-Q curve of the fans.(3/7)

adamwong.bsky.social•72 days ago

We can't just say one filter level is better without considering these factors. The best filter level strikes a balance between filtration efficiency and the airflow rate drop due to the pressure drop from the filters. (4/7)

adamwong.bsky.social•72 days ago

I conducted a test on the 3Pro model, which achieved the highest CADR with E11 filters. While this may not apply to all air purifiers, for PC fan types, E11 filters are the most effective choice.(5/7)

adamwong.bsky.social•72 days ago

I don’t believe H13 can provide the highest CADR in any case. H13 filters are ideal for devices like biosafety cabinets, where maximum single-filtration efficiency is required, but not for conventional air purifiers. (6/7)

adamwong.bsky.social•72 days ago

Commercial companies often use this as a marketing gimmick, promoting H13 as the best without considering the impact on overall performance.(7/7)

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