A zone is a collection of one or more spaces.
Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Syntax
Remarks
The concept of zones is central to the way in which engineers
design HVAC systems. When you are designing HVAC systems, you
relate to zones as spaces that are under the same thermostatic
control. Conceptually, zones are an arbitrary set of areas or
volumes within a building that is controlled by one thermostat.
An area based load is a collection of one or more electrical
load areas. When it has the AreaBasedLoadData, it is an area
based load, otherwise, it is a zone.