July 30th 2025

ApacheHVAC Basics - Multiplexes and Layer Control

The ApacheHVAC application in the VE allows users to simulate detailed function of custom HVAC systems as well perform sizing calculations of central plant and terminal equipment.

This "bite sized" ApacheHVAC video presents the concept of multiplexes which is central to the configuration of HVAC simulations. We will be similarly illustrating how multiplexes are used to link the thermal model created in Apache and ModelIT to the component based HVAC simulation in ApacheHVAC. The video covers:

  • The basic concept of multiplexes and how they simplify the simulation of HVAC systems in multi-zone buildings
  • How to create and populate a multiplex from scratch
  • How to populate a multiplex using either room or zone groups
  • Familiarization with the concept of Local and Global modes as well as how to edit a subset of all rooms.
  • How to create prototype layers in your multiplex to facilitate the bulk selection of a subset of layers with common properties

Watch the video below. 

For guidance on how to model HVAC systems in detail with IESVE software, enrol in our FREE ApacheHVAC Basics On-Demand Learning course.