This month's episode of HPAC Editor's Notes looks at the three editorials from the September 1929 issue of Heating, Piping and Air Conditioning magazine. Observations note how "technical interests stimulate business"; how Chicagoans were "amazed" to see a German zeppelin (no, not that one) sail over Lake Michigan; and how engineering schools all over the world were starting to do more scientific research.

This month, HPAC 'On The Air' welcomes back Dr. Bill Bahnfleth, ASHRAE past president, former chair of its ASHRAE Epidemic Task Force, and longtime professor of architectural engineering at Penn State University. Bahnfleth's father Donald also served as editor of HPAC Engineering throughout the 1960s, and later became ASHRAE president, himself. So there is much to unpack in this wide-ranging episode...

A thunderous brushback by a burst of nighttime tornadoes reminds our editor-in-chief of the importance of community and the inescapable fact that we are all in this together.

'HPAC On The Air' this month welcomes longtime Greenheck Fan Corp. exec Mike Wolf, PE, the 2023-24 president of the Air Movement and Control Association (AMCA) International, where he will also serve as the group's 2024-25 chairman. Now in his 39th year at Greenheck, Wolf today is the manufacturer's director of regulatory business development. He speaks with us here about a subject near and dear to him: product certification. Along the way, Wolf and host Rob McManamy also reflect on our industry's amazing evolution over the last four decades...

This month, we again revisit HPAC's first year in service to our industry with a fascinating time capsule from 95 years ago. Listen to some of our editorial commentary then on improving air quality in cities, the engineering value of journeyman input, and the need to create piping codes across the U.S. that conform with one another...

'HPAC On The Air' welcomes back the longtime Clark's Remarks columnist to talk about heat domes, environmental regulation, and how he "walks the talk" of his sustainability evangelism.

EDITOR'S NOTES: Women are playing an increasingly vital role in our industry today. Here, we take a look back on the path of that progress, in HVACR and society, over the 95 years of HPAC Engineering's existence.

This fall in Chicago, ASHRAE will hold its first-ever national symposium for Women Engineers. Event chair Nancy Kohout, P.E., joins us for a preview, as well a discussion of the unique challenges women managers still face, even as our industry ramps up next-generation recruitment...

As HPAC Engineering this month celebrates its 95th anniversary, we look back on our first words to readers in 1929, along with a guest commentary by Willis Carrier, himself. 

The National Fire Protection Association is on a mission to share its updated codes and standards as far and as wide as possible. NFPA President and CEO Jim Pauley returns to HPAC On The Air to detail the group's ambitious plan to better educate our industry on life/safety solutions via acquisitions and even a new subsidiary.