Just so you know, 5 ACPH (Air Changes Per Hour), which is what an air change every 12 minutes would equate to, is pretty low.
No different (actually on the low side) for what you would see in a typical conference room, retail space, etc.
It sounds impressive if this is not something you are familiar with from a facilities design standpoint...my HRV is set to 20 ACPH for example...the lowest setting.
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