Air Purification and COVID-19: A Facilities Guide
Airborne transmission of SARS-CoV-2 means ventilation and filtration are legitimate, evidence-based layers of workplace protection — alongside, not instead of, surface hygiene and personal measures.
What filtration addresses
HEPA filtration captures airborne viral particles as air passes through the unit, reducing concentration over time in a given space. It works best combined with adequate fresh-air ventilation rates, per building services guidance from bodies like ASHRAE.
A layered approach
- Ventilation: fresh air exchange rates appropriate to occupancy
- Filtration: HEPA purifiers sized to room area
- Surface treatment: continuous ambient disinfection, EPA-validated against SARS-CoV-2
- Behavioural measures: hand hygiene and staying home when unwell
No single layer fully replaces the others. See our COVID-19 disinfection services for the surface-treatment side of this approach.
This page provides general facilities guidance and is not medical advice. Follow current public health guidance from your local health authority.
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