While reflecting on factors that made recent projects successful, one area of importance came to mind: the Mechanical Equipment Room (MER). Many architects may not consider this an area of importance, as it is not typically a high-design area, rather more of a back-of-house area. Despite the fact that the MER may not have the Italian Travertine tile or the hand-blown glass lighting, it is the heart of the building. A tremendous amount of planning and thought is spent on this room, or rooms, during the core- and shell-build, or retrofits. Below are, from an architect’s perspective, strategic design considerations for Mechanical Equipment Rooms.