The Difference Between Rooms & Spaces

With regards to geometry there is no difference between Revit Rooms and Revit Spaces.  The only difference between the two element types is the additional non-graphical data that can be exported along with ‘SPACE’ data.  The table below compares the data that can be exported with each option.
 
Revit Room Data
Revit Space Data
Building Location
Building Type
Building Constructions/Fabric
Room Names
Building Location
Building Type
Building Constructions/Fabric
Room Names
Room Type – Occupied/Plenum
Occupancy – Heat Gain/Person
Electrical – Lighting & Power Loads
Zone Data – Heating & Cooling Set Points