HEALTH & WELLNESS STUDY

Enhanced localized ventilation improved the performance of workers by 8%, equivalent to a $6,500 increase in employee productivity each year. Reduced absenteeism and improved health are also seen with enhanced ventilation. The health benefits associated with enhanced ventilation rates far exceed the per-person energy costs relative to salary costs.

HARVARD SCHOOL OF PUBLIC HEALTH

Economic, Environmental and Health Implications of Enhanced Ventilation in Office Building DOI: 10.3390/ijerph121114709

Aerosols linger longer indoors - long enough to be inhaled by someone sharing

the space. That recycled air is "rebreathed air fraction"

EXCERPT: "Mechanical ventilation is designed for comfort, not infection control, and generally in most buildings cannot achieve the air change rates that are needed to protect against a highly infectious viral aerosol like the current COVID-19 variants"

TIME MAGAZINE

If We're Going to Live With COVID-19, It's Time to Clean Our Indoor Air Properly

https://bit.ly/3wGe20m