Before we talk about Revit MEP spaces, a brief overview of Revit Architecture Rooms and Revit MEP Spaces is generally helpful. Revit Rooms and Spaces are independent components used for different purposes. Rooms are an Architectural component used to hold data about the occupied space (Figure 1). Figure 1 - Room properties Spaces are used exclusively by the MEP disciplines and are used to hold data about the areas in which they have been place that can be used to perform heating and cooling load analysis (Figure 2). Rooms and Spaces have some common characteristics. Both are created within room-bounding elements such as walls, floors, ceilings, roofs, and room separation lines that are present in the Architectural model. So objects that are used to define a Room in the Architectural model define the Space in the MEP model. Figure 2 - Space properties Using Spaces, the Mechanical Designer can model the HVAC loads within the program or export the space load data via a gbXML file for impo
