Ashrae Handbook

The ASHRAE Handbook is a four-volume, annually updated reference published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). It represents the consensus of global HVAC&R knowledge, covering fundamentals, systems, equipment, and applications.

While ASHRAE is an American society, the Handbook is used globally. The publisher provides both Inch-Pound (I-P) and International System of Units (SI) editions. Multinational engineering firms standardize on the ASHRAE Handbook to ensure that a design office in Mumbai and a site office in London are speaking the same technical language. ashrae handbook

This volume addresses the low-temperature side of the industry, distinct from standard comfort cooling. The ASHRAE Handbook is a four-volume, annually updated

The index is your best friend. It is located in the back of each physical volume and is hyperlinked in the digital edition. Do not try to read the Handbook linearly. Look up "Ventilation, Hospital operating rooms" and go directly to that page. The index is your best friend

The ASHRAE Handbook is the definitive four-volume technical resource for the HVAC&R industry, covering fundamentals, systems, applications, and refrigeration in both I-P and SI units. Updated on a four-year cycle, the handbook integrates current research and sustainability practices to provide essential design guidance for professionals. Explore the full collection at ASHRAE Handbook Central . Handbook - ASHRAE

One of the most distinctive features of the ASHRAE Handbook is its publication cycle. ASHRAE publishes one volume per year, creating a four-year cycle. This ensures that every four years, each volume has been revised and reprinted with fresh data.

The year in the citation (e.g., ASHRAE 2021) tells you the edition. Current practicing engineers refer to the latest volume for each topic.