Interpreting Air Cleaner Performance Data by ASHRAE

5 minutes to read

Air purifiers have become permanent fixtures in homes, offices, retail stores, healthcare facilities and even industrial environments. As we enter the final stages of the pandemic; masks, lockdowns and crowd limitations are becoming less common, but the air purifier will likely remain.

Demand for a product drives the supply chain to deliver. This demand / supply equation is often responsible for driving product innovation. With air purifiers, many innovations took the form of new, and in some cases, recycled technologies from the past, broadly categorized under the term electronic air cleaners. These products focus more on killing or inactivating viruses, bacteria and other organisms as opposed to particulate filters which capture and hold them within the body of an air filter. This kill or inactivate strategy was a response to the public’s demand to protect themselves against airborne infectious diseases like COVID-19.

The surge in demand for electronic air cleaners brought to light the fact consumers have a hard time finding simple methods or ratings systems to determine real world effectiveness. Particulate filters are evaluated and classified for particle capture efficiency using widely accepted test standards such as IEST-RP-CC001 or ISO 29463 for HEPA filters and ASHRAE 52.2 or ISO 16890 for HVAC style filters. Using particle capture efficiency together with a purifier’s airflow and size of the space in question, gives consumers the ability to...

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