HVAC should provide which of the following A HVAC should be

HVAC should provide which of the following?

A. HVAC should be a closed-loop system with negative pressurization.

B. HVAC should be an open-loop system with positive pressurization.

C. HVAC should be an open-loop system with negative pressurization.

D. HVAC should be a closed-loop system with positive pressurization.

Solution

D. HVAC should be a closed-loop system with positive pressurization. Closed loop means that the air inside the building is filtered and continually reused. Positive pressurization should be used to ensure that inside air is pushed out. This is a big safety feature in case the building catches fire. Answers A, B, and C are incorrect because they do not contain both closed-loop systems and positive pressurization.