HVAC Fast Facts (I-P)

HVAC Acronyms, Equations and Definitions at Your Fingertips

ASHRAE’s HVAC Fast Facts serves as a quick reference for commonly used HVAC acronyms, terminology, equations, and other essential information for designers, manufacturers, and engineers.

This laminated reference includes the following information in I-P units:

• Common HVAC acronyms
• Design and construction terminology definitions
• Equations for psychrometrics, mixed air temperatures, air changes per hour, equipment efficiencies, envelopes, and cooling towers
• Fan and pump affinity laws
• Common conversion factors

It also includes brief descriptions of the four volumes of the ASHRAE Handbook.

This quick reference guide is perfect for:- new engineers learning the equations and formulas used in everyday engineering tasks
- experienced engineers who appreciate the efficiency of having regularly used formulas on hand
- those seeking a companion quick-reference in coordination with the ASHRAE Handbook

Many such documents have been circulated throughout the HVAC industry without ASHRAE's approval or verification—this first-ever ASHRAE-sponsored guide mitigates concerns of inaccurate information being distributed and used.

This guide is produced and maintained by Young Engineers in ASHRAE (YEA).