Many people in the environmental industry have heard of the terms “sick building syndrome” and “indoor air quality” (IAQ), but substantially fewer understand the concept of “building bake-out”. 

The fundamental idea on containment is simple: keep one or more contaminants in or out of an area. Quite literally, a containment is an isolation system.

Protecting return-to-work individuals who had been restricted from gathering in an effort to minimize the spread of COVID-19, and efforts to reopen public indoor spaces safely have led to a lot of interest in how HVAC systems may be adjusted to reduce the spread of the virus. 

At the time of this writing, we’re starting to see the much-anticipated second wave of COVID-19 infections and deaths due to colder temperatures settling over much of the U.S. and people moving activities indoors.

As we seek to return to normalcy without a vaccine, COVID-19 confronts us with a troubling reality. We spend 90% of our time indoors in the U.S. and Europe, and scientific evidence indicates we are nearly 20 times more likely to be infected by the virus indoors than outdoors.