Centralized AC encompasses everything from your kitchen exhaust fan to towers controlling the interior climate of city-sized malls. While it’s easy to feel overwhelmed by HVAC specification, architects, by no means, need to know everything. Typically, the design of an HVAC system is delegated to a specialist consultant who works in coordination with the architectural team on a project. Therefore, architects need to be familiar with various types of HVAC systems and their relative strengths. In this article, we focus on the aspects of HVAC specification that architects should have a handle on; as an architect, it is your job to be aware your own priorities and work to ensure a system that will minimally impact the aesthetics of your intended design.