Update to the NAFA Guide to Air Filtration, 6th Edition Author; Jay Reese, CAFS, J & BR Associates, LLC.
new information in Chapter 9: Controlled Environments which covers new standards and updated language relative to the various industries covered. Chapter 12: Indoor Air Quality contains new terminology and a updates of 62.1 – 2019, which covers Classes 1-4. One of the most significant updates has come in Chapter 14: Ultraviolet Germicidal Irradiation, Photocatalytic Oxidation. This is a subject that has become extremely important since our last update and the chapter now contains substantially more information and charts/ graphs/tables explaining how this technology is being implemented in the industry. Be sure to review this information to increase your knowledge of the subject.
Background When I started the project of overseeing the updating to the NAFA Guide to Air Filtration, I was overwhelmed with not knowing where or how to start on this monumental task. After reviewing what had been done in the past, I had a better idea of what was needed. Lots of help from others! I would be remiss if I didn’t call out all the NAFA members who helped to contribute to the 2021 update. From Past Presidents, whom I nominated to take chapters to review, to past contributors, industry consultants and experts and in general, anyone who I could convince to lend their knowledge and expertise. To each of you who contributed, on behalf of NAFA and our members, I thank and salute you. What's new The 2021 update contains many new materials, charts, graphs, pictures and tables, updates on material that is still relevant, corrections to old materials and just about anything that we found that needed freshening up. With that said, just like any document that you produce, I’m sure some intrepid reader of the Guide will find an error or omission. In advance, if you do, please make a note of it and let NAFA Staff know, so that when we do the next update, we can include your wisdom In reading the updated guide, you’ll find that we’ve included new standards, such as the ISO 16890 section, which was important enough that we’ve created a new addendum just on that topic. We’ve also included a table in Chapter 7: HVAC Filter Testing, that compares ASHRAE 52.2-2017, EN779 and the new ISO 16890 test criteria. Also included are discussion and tables covering the new ISO 29463 standard which replaced EN 1822:2009 for HEPA/ULPA filter testing. There’s
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ISO 16890 addendum On the following pages, you will find an excerpt from the new Guide, Addendum 7.2 A Brief Description of ISO 16890, which, "...establishes an efficiency classification system of air filters for general ventilation based upon particulate matter (PM). It also provides an overview of the test procedures, and specifies general requirements for assessing and marking the filters, as well as for documenting the test results. It is intended for use in conjunction with ISO 16890‑2, ISO 16890‑3 and ISO 16890‑4."1 Last words If you’re like me, you probably have a copy of the Third, Fourth, or maybe even the Fifth Edition of the NAFA Guide to Air Filtration sitting on your shelf as a reference. With all the changes in technology and updates to standards, in order to be fully knowledgeable and best positioned to assist your customers, you’ll want to order the new Sixth Edition as soon as possible so that you can read and review everything that I’ve mentioned and much more that I’ve not even touched upon. Be sure to call or email NAFA HQ and place your order for the new edition as soon as it’s available in print. You won’t be sorry. Lastly, again I want to thank all the NAFA members, industry experts and NAFA staff who so graciously gave of their time and expertise to provide information that has been included in this Sixth Edition. Without their efforts, I would still be working on this update. Good reading,
Jay Reese, CAFS
NAFA Air Media
