HVAC Specific Hierarchy
- Last UpdatedJan 07, 2026
- 1 minute read
Below the ZONE level in the HVAC module, the HVAC specific elements are:
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HVAC (HVAC)
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BRANCH (BRAN)
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HVAC Component(s)
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SPOOLS (HSLIST)
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HVAC Spool
HVAC (HVAC) Element
The HVAC (HVAC) is a top level element in the Design database under which Branch (BRAN) and Spools (HLIST) are created.
BRANCH (BRAN) Element
The Branch (BRAN) is a sequence of HVAC component elements running between two points:
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Branch Head
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Branch Tail
HVAC Component Element
HVAC Components are single pieces of HVAC used to create a HVAC design. For more information, see Create / Modify HVAC Components.
SPOOLS (HLIST) Element
The Spools (HLIST) contains a collection of HVAC Spool elements.
HVAC Spool Element
Each HVAC Spool is a sequence of HVAC components combined together, for ease of fabrication.