What is system-wide ventilation?

• A. Ventilation that uses a central system delivering air across multiple spaces, with calculations considering the system.
• B. Ventilation that uses a central system delivering air across multiple spaces, with per-space adjustments.
• C. No central system exists.
• D. Only applicable to inpatient spaces.

Answer: (C)

System-wide ventilation means using a central air distribution system that serves multiple spaces with a shared network, coordinating and delivering conditioned air to those spaces. If there is no central system, you can’t have a system-wide approach—the ventilation there would be localized to individual spaces rather than provided by a single, building-wide system. So, stating that no central system exists describes the absence of a system-wide arrangement. The other descriptions presume a central system is in place and would apply only when such a system serves multiple spaces; the inpatient-only note isn’t a defining factor for system-wide ventilation.