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2021 ASHRAE Handbook —  Fundamentals Update Now Available.

The ASHRAE Handbook is published in a series of four volumes, one of which is revised each year, ensuring that no volume is older than four years. Each volume is available in I-P (Inch-Pound) or SI (System International) units of measurement. Contact Handbook Editor Heather Kennedy via e-mail at hkennedy@ashrae.org.

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Members: Download PDF of 2021 Fundamentals Handbook

Handbook PDF can be downloaded for ASHRAE Members and Customers as part of their eligible benefits and part of their Handbook Print purchase from the ASHRAE Technology Portal.

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Purchase any of the current Handbook volumes in print or individual chapter PDFs through the ASHRAE Bookstore, or PDFs of the entire volume for 2018 Refrigeration, 2019 HVAC Applications, 2020 HVAC Systems & Equipment, and 2021 Fundamentals through the Technology Portal.

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ASHRAE welcomes your comments on the Handbook or a specific Handbook chapter.

Comment on the Handbook: To submit a comment about any aspect or part of the Handbook series, you can use the Handbook Comment Form.

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Handbook Central

Information and tools for ASHRAE TCs developing Handbook Content


For more ASHRAE Handbook Committee information, go to the Handbook Committee Page

Handbook Corrections

pdf_icon.png General Handbook Corrections - I-P Edition
(Items marked in yellow are new - updated 8/16/2021) (PDF) 

pdf_icon.png General Handbook Corrections - SI Edition
(Items marked in yellow are new - updated 8/16/2021) (PDF)

pdf_icon.png I-P version of Chapter 46 from 2019 ASHRAE Handbook—HVAC Applications
(the correct I-P version is available here)

pdf_icon.png I-P version of Chapter 47 from 2019 ASHRAE Handbook—HVAC Applications
(the correct I-P version is available here)

Handbook Series Content

pdf_icon.png Composite Index to entire Handbook Series (Updated August 1, 2018)

2021 ASHRAE Handbook—Fundamentals

Description of the 2021 ASHRAE Handbook—Fundamentals

Table of Contents 2021 ASHRAE Handbook—Fundamentals

2020 ASHRAE Handbook—HVAC Systems and Equipment

Description of the 2020 ASHRAE Handbook—HVAC Systems and Equipment

Table of Contents 2020 ASHRAE Handbook—HVAC Systems and Equipment

2019 ASHRAE Handbook—HVAC Applications

Description of the 2019 ASHRAE Handbook—HVAC Applications

Table of Contents 2019 ASHRAE Handbook—HVAC Applications

2018 ASHRAE Handbook—Refrigeration

Description of the 2018 ASHRAE Handbook—Refrigeration

Table of Contents 2018 ASHRAE Handbook—Refrigeration

Handbook History

A Brief History of the ASHRAE Handbook

Translations of ASHRAE Handbook and ASHRAE Standards

ASHRAE supports the use of ASHRAE Standards and ASHRAE Handbook internationally. Procedures and policies are in place to promote such uses while protecting ASHRAE's intellectual property and technical credibility. Agreements vary depending on source of requests (ASHRAE chapters, Associate Societies, commercial publishers or other commercial firms, government, standards bodies, other associations, and educational institutions). ASHRAE also considers requests for translation of other ASHRAE books, articles, and papers. To request a translation agreement, contact Mark Owen, Publisher/Director of Publications & Education, at mowen@ashrae.org.

pdf_icon.png  View a complete list of Standards and Guidelines currently offered by ASHRAE

Titles, Purposes and Scope