{"id":20778,"date":"2022-01-31T09:43:07","date_gmt":"2022-01-31T01:43:07","guid":{"rendered":"https:\/\/smartairfilters.com\/?p=20778"},"modified":"2022-02-11T00:49:22","modified_gmt":"2022-02-10T16:49:22","slug":"open-letter-schools-choose-best-air-purifier","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/open-letter-schools-choose-best-air-purifier\/","title":{"rendered":"Open Letter Shows Schools How to Select Best Air Purifiers for COVID"},"content":{"rendered":"

University of Chicago professor and Smart Air founder Thomas Talhelm published open letter to stop schools getting ripped off on air purifiers<\/h3>\n\n\n\n

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Air purifiers have become a vital tool in protecting school students and teachers from COVID and virus transmission. However, school teachers and administrators are not experts in air purifier technology. As such, schools have been caught<\/a> out buying sub-par purifiers or being tricked into spending massive amounts of tax-payers money on air purifiers.<\/p>\n\n\n\n

Now, an open letter published by Smart Air founder and University of Chicago professor Thomas Talhelm aims to provide 5 simple, science-backed guidelines for school administrators to follow when choosing a classroom air purifier.<\/p>\n\n\n\n

There is so much noise in the air purifier market, it can be difficult for schools to know which air purifiers are best for protecting their students and teachers. <\/p>Thomas Talhelm<\/cite><\/blockquote>\n\n\n\n

The letter, signed by other notable air quality researchers and representatives, includes the main points:<\/p>\n\n\n\n

1. Schools should avoid ozone generators and ionizers.<\/h3>\n\n\n\n

Peer-reviewed scientific studies show that ionizers and ozone generators emit byproducts that are harmful to humans. Many useful tips on ensuring schools choose air purifiers that do not contain these dangerous technologies are covered in the open letter.<\/p>\n\n\n\n

2. Use HEPA filter air purifiers: the best-researched air purifier technology.<\/h3>\n\n\n\n

Schools should make sure to choose purifiers that use HEPA filters or other mechanical fiber filters, such as MERV-rated filters. this is by far the most tested and researched air purifier technology, and multiple studies show they perform well at filtering viruses and COVID-19.<\/p>\n\n\n\n

3. Use the CADR rating to compare the effectiveness of air purifiers.<\/h3>\n\n\n\n

Schools can easily get caught out or tricked by all the marketing noise around air purifiers. To combat this, Talhelm urges schools use ‘Clean Air Delivery Rate’ CADR values, not airflow, to compare the effectiveness of different purifiers. Avoid purifiers that do not have CADR published 3rd party CADR ratings.<\/p>\n\n\n\n

Tips:<\/strong><\/p>\n\n\n\n

\u2022 Schools can plug CADR ratings and their room sizes into calculators<\/a> to find the best purifier quantity and layout for their classrooms. <\/p>\n\n\n\n

\u2022 There are two different units of measurements commonly used for CADR ratings: m3<\/sup><\/strong>\/hr and cubic feet per minute (cfm). When comparing air purifiers, make sure to compare CADR ratings of the same unit. If they are not the same unit, first convert<\/a> one unit to the other.<\/p>\n\n\n

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Simple, Low-Cost Ways to Combat COVID-19 for Schools, Homes and Businesses<\/div><\/div>
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