No Analytical Spaces

While preparing for an energy analysis, Revit could not find analytical spaces, which are necessary for energy simulation.

Error: No analytical spaces

Solutions:

• Simplify the complexity of the model. See Energy Analysis using Building Elements - Model Validation.
• Add room bounding elements. See Room-Bounding Elements and Room Boundaries.
• Ensure that building elements belong to the project phase specified in the Detailed Model section of the Energy Settings dialog.
• Ensure that building elements form a generally enclosed shell. For example, there should be no missing walls, floors, roofs, and windows. See Energy Analysis using Building Elements - Model Validation.