[ornornor]

I’m trying to picture the systems. They’re basically a carbon filter sandwiched by two fans, it runs the air through the filter and puts it back in the room? Or is it connected to a vent that exhausts the air outside (or does it filter one coming outside air?)

[runnerup]

In my case, a fan sandwiched by two filters. Recirculates through room so filtration will follow the differential equation models for “CSTR’s”, which are Constantly Stirred Tank Reactors.