Top Stories


Construction Employment Grew in May

June 11, 2024
"Despite perpetual fears of recession," hiring once again out-performed expectations last month and contractor confidence remained strong.


Download: An Engineer's Notebook, 2021-2024

May 24, 2024
The Best of Ken Elovitz, P.E.

Download "Refrigerants Revolution 2024"

Dec. 18, 2023
Our industry's accelerated transition to low-GWP refrigerants is kicking into high gear. Get the latest guidance for staying in compliance.
U.S. Census Bureau

Women in Our Industry, Then and Now

June 1, 2024
EDITOR'S NOTES: As we continue to look back on the last 95 years, one of the many issues that stand out truly is the steady advance of women in our industry, and society.
Indiana University

HPAC 2024: Our June Quiz!

June 1, 2024
*WOMEN IN ENGINEERING* How much do you know about the last century of contributions made by women in our industry? Take the quiz! Win prizes!

Read the May-June 2024 Issue

May 30, 2024
OUR NEW ISSUE: Fire Protection Update; Refrigerants Primer; O.R. Climate Wars; BOILER 2024 Wrap; Women on the Rise; and more...



Hero 2

Johnson Controls-Hitachi Air Conditioning