Fed OSHA’s COVID-19 ETS: What You Need to Know About Ventilation

By Conn Maciel Carey’s COVID-19 Task Force

Today’s topic on the Fed OSHA COVID-19 ETS is ventilation.

Ventilation

29 C.F.R. Section 1910.502(k) establishes ventilation requirements for covered facilities.  This summary describes the standard’s requirements for ventilation.

The ventilation provisions of the ETS do not require employers to purchase new HVAC systems or to reconfigure existing duct work to comply with the standard.  Rather, employers are required simply to increase indoor ventilation to the maximum extent possible on existing systems. New filtration equipment may be required, however, depending on the existing air filters in an HVAC system.

OSHA ventilation requirements are based on the concern that, without adequate ventilation, continued exhalation can cause the amount of infectious smaller droplets and particles produced by people with COVID-19 to become concentrated enough in the air to spread the virus to other people.  OSHA explained in the preamble that the more outdoor air the HVAC system is capable of drawing into the building, the greater the impact may be on limiting the potential for the virus to accumulate.

Accordingly, the ETS establishes five main requirements that employers who own or control buildings or structures with an existing heating, ventilation, and air conditioning (HVAC) system(s) must follow to comply with the ETS: Continue reading