Class 1 Full Integration requires which of the following components to be integrated?

• A. Permanent Modifications and Sealing Measures
• B. Manual Dampers Control Outside Air and Exhaust
• C. CBRN Filter Units Fully Integrated and Existing HVAC Systems
• D. The Contamination Control Area Can Be Permanent or Temporary

Answer: (C)

Full integration means tying the CBRN filtration directly into the building’s HVAC so filtered air becomes part of the central air handling rather than a separate, isolated add-on. When CBRN filter units are fully integrated with the existing HVAC, air moving through the system is consistently cleaned before it’s supplied to or exhausted from controlled spaces, and pressure relationships are maintained to prevent contaminant escape. This coordinated approach ensures there are no bypass paths and that filtration performance is reliable under both normal operation and incident conditions.

Permanent modifications and sealing are important for establishing containment boundaries, but they don’t by themselves ensure the HVAC actually delivers filtered air throughout the space. Manual dampers controlling outside air and exhaust manage ventilation rates, yet without full integration of the CBRN filtration into the HVAC, you can’t guarantee all air leaving or entering the space is properly filtered. The nature of the Contamination Control Area—whether permanent or temporary—addresses the space setup, not the essential linkage between filtration and the central air handling system.