HVAC system design
Tuesday, July 21, 2020


Depending on the building and its geographic location, there are several techniques for specifying HVAC systems in nonresidential buildings. A new or existing building each has its own requirements, and mechanical engineers must understand the client’s needs, the codes and standards, humidification/dehumidification needs, energy efficiency goals and the specific building requirements to successfully design a system.

Based on the most recent Consulting-Specifying Engineer research, the top three HVAC products/systems most specified are:

  • Air handlers.
  • Fans, air movement.
  • Rooftop units.

There are many factors to consider when choosing and designing HVAC systems for buildings. Those decisions ultimately influence how energy-efficient the building is. The major factors to optimize for energy efficiency are ventilation, zone control, heat recovery and operations.

Learning objectives:

  • Learn about ASHRAE, International Mechanical Code and other guidelines that drive HVAC system design and specifications.
  • Understand HVAC design strategies, and the various products and systems available. Know the basics of how building automation systems and controls are integrated into this design.
  • Consider energy-efficiency goals, and what HVAC products or systems can help achieve them.

Review commercial buildings example design strategies.