This document lists common acronyms and abbreviations used in architecture, engineering, construction, building operations, energy management, and related fields. Some of the more common abbreviations included are AIA (American Institute of Architects), ASHRAE (American Society of Heating, Refrigeration, and Air Conditioning), BIM (Building Information Modeling), HVAC (Heating, Ventilation, and Air Conditioning), LEED (Leadership in Energy and Environmental Design), and PG&E (Pacific Gas & Electric). In total, over 30 common industry acronyms and abbreviations are defined.