A major review site criticizes IKEA air purifiers, but it is completely refuted

IKEA, a major furniture manufacturer, develops and sells the air purifier ' FÖRNUF TIG '. When the major review site 'Wirecutter' criticized this IKEA air purifier, some users questioned the evaluation criteria of Wirecutter, and the problems of evaluation by Wirecutter were pointed out one after another.

Contra Wirecutter on the IKEA air purifier
https://dynomight.net/ikea-purifier/

In April 2022, Wirecutter published an article comparing multiple air purifiers entitled 'Best Air Purifiers'. In this article, Wirecutter touched on the performance of the filters on the FÖRN UFTIG and the types of debris that could be removed, and rated it as inferior to the other air purifiers it compared to. Regarding this review by Wirecutter, dynomight , who runs a website on technology and science, points out that 'Wirecutter's evaluation is clearly wrong' and points out several problems in the article.

Generally, air purifiers are equipped with a type of filter called a HEPA filter . In the article in question, 'FÖRNUFTIG does not have a'true HEPA filter', so it is optimized to remove particles larger than 2.5 micrometers, such as PM2.5 , rather than particles with a diameter of 0.3 micrometers. It is written. On the other hand, if you check the product page of FÖRNUFTIG, it is stated that a filter equivalent to EPA12 in ISO 29463-3 (EU HEPA standard) is installed.

What Wirecutter calls the 'true HEPA filter' in this article is a filter equivalent to H13, which has a higher particle collection capacity than EPA12. EPA12 in the EU standard indicates the ability to collect 99.5% of particles in the air, and H13 indicates the ability to collect 99.95% of the particles in the air. For this reason, Wirecutter's 'Air purifier with'True HEPA Filter'(H13) can collect 0.3 micrometer particles, and FÖRNUF TIG with EPA12 equivalent filter is 2.5 instead of 0.3 micrometer particles. The explanation, 'optimized for micrometer particles,' is completely off the mark, dynomight points out.

In addition, Wirecutter is suitable for an air purifier equipped with a 'true HEPA filter' to collect very fine particles such as smoke in units of 0.01 micrometer, and FÖRNUF TIG is relatively suitable for pollen and mold spores. It explains that it is suitable for collecting large fine particles. However, the HEPA filter does not have a structure like a colander with a small hole on one surface, but a structure in which fibers are entwined three-dimensionally. For this reason, it does not mean that 'the H13 filter can collect 0.01 micrometer units, but the EPA12 filter is completely impossible'.

Mr. dynomight has raised suspicions that the reason why Wirecutter has posted such an irrelevant evaluation is that it may be to purchase 'Recommended products of Wirecutter'.