Home Page

    Welcome to the Central Arizona Chapter of ASHRAE! Check out our Calendar for upcoming events.


    president's Message: december 2020

    President of the Central Arizona Chapter of ASHRAE
    Roger Kirkman


    Fellow ASHRAE Central AZ Chapter Members,

    Happy Holidays to you and yours!  Halloween, Thanksgiving, and now Christmas… 2020 has slipped away, with the New Year just a few days away.  Wow!  I guess we better all get our New Year’s resolutions list put together.  You go first!

    Despite not being able to meet monthly in person, we have had a pretty eventful Chapter year--- our make-up golf tournament was a great success, as was our I-10 Challenge Trap Shoot with the Tucson Chapter, and the turnouts for our Virtual Monthly Meetings have been fantastic (as have been our Distinguished Lecturer Speakers).  We are going to keep the momentum going for our January 5th Virtual Monthly Meeting with a fantastic topic (“Data Center Industry in 2020 and Beyond”) presented by one of our Chapter’s own (former Chapter President Robert Sty, PE).  Be sure to register for this Zoom Webinar event on the Chapter web site ASAP if you have not done so already.

    As Calendar Year 2020 closes, we want to look back on an important part of our Chapter’s reason for being--- Research Promotion--- and thank these Individuals and Organizations that donated at Honor Roll levels for the 2019-2020 Chapter Year:



    Arizona Control Specialists                          
    Bob Langmade Memorial (Norman S. Wright SW)
    Environ Applied HVAC Systems
    Pearson Engineering Associates, Inc.      
    Russell Sigler Inc.             
    United Metal Products



    Steve Blau (deceased) Don Brandt Austin Condin
    Rick D’Andrea  Prakash Deshmukh Dave Downing
    Steve Durand Meg Gates Jim Hart
    Kellie Huff James Kennelly Roger Kirkman
    Mike Kraemer Jon Kuderer Bill Truett
    Diane Langmade  Timothy Mitchell Tyson Padgett
    Colin Laisure-Pool Beau Turner  


    If you are looking for a worthy cause for your annual donation dollars, we hope you will join these Members and contribute to ASHRAE Research, whether it’s in Calendar Year 2020 or 2021.  A Donation Portal is located on our Chapter webpage to make it easy.  If you have questions, contact RP Chair Matthew Watters at [email protected]

    Happy New Year!!  See you at the January 5th Virtual Meeting!

    Thank you,
    Roger Kirkman
    Central AZ Chapter President 2020-2021


    March Meeting

    Fundamentals of Ultraviolet Germicidal Irradiation for Air and Surface Disinfection



    William P. Bahnfleth, Ph.D., P.E.



    William Bahnfleth is a professor of architectural engineering at the Pennsylvania State University (Penn State) in University Park, PA, where he has been employed since 1994. Previously, he was a Senior Consultant for ZBA, Inc. in Cincinnati, OH and a Principal Investigator at the U.S. Army Construction Engineering Research Laboratory in Champaign, IL. He holds BS, MS, and PhD degrees in Mechanical Engineering from the University of Illinois, where he also earned a bachelor of music degree in instrumental performance. His is a registered professional engineer. At Penn State, Dr. Bahnfleth teaches undergraduate courses in HVAC fundamentals, HVAC system design, and controls and graduate courses in chilled water systems, hot water and steam systems, and indoor air quality. His research interests cover a wide variety of indoor environmental control topics including chilled water pumping systems, stratified thermal energy storage, protection of building occupants from indoor bioaerosol releases, ultraviolet germicidal irradiation systems, and others. He is the author or co-author of more than 170 technical papers and articles and 14 books and book chapters. He consults on the design of chilled water thermal energy storage systems and has been involved in more than 20 projects world-wide.

    Dr. Bahnfleth is a fellow of ASHRAE, the American Society of Mechanical Engineers (ASME) and the International Society for Indoor Air Quality and Climate (ISIAQ). He has served ASHRAE in a variety of capacities, including Student Branch Advisor, Chapter Governor, Technical Committee and Standing Committee Chair, and as Director-at-Large, Vice President, Treasurer, and 2013-14 Society President. His honors include a 1st place ASHRAE Technology Award, Transactions Paper Award, Distinguished Service and Exceptional Service Awards, The Louise and Bill Holladay Distinguished Fellow Award, the E.K. Campbell Award of Merit and the F. Paul Anderson Award. He is also a recipient of the Penn State Engineering Alumni Society’s World-Class Engineering Faculty Award.



    Germicidal radiation produced by low pressure mercury vapor lamps and other sources is seeing increasing application both for air disinfection and for control of biological growth on surface.  This presentation provides an overview of the fundamentals of ultraviolet germicidal irradiation (UVGI) including principles of operation, component characteristics, system types, applications, and published evidence of effectiveness.

    March 02, 2021
    11:45 AM to 1:00 PM

    Zoom Webinar


    Intro To HVAC Design

    Tech Session

    Are you just beginning to get into your HVAC Career? A student/intern looking to get into the industry and wants to get ahead of the curve? Or do you just have a thirst for knowledge that's never satisfied? Then come out to our 2nd annual ASHRAE Central AZ "Intro to HVAC Design" Technical Session where we'll be presenting on several different topics. We'll be giving away design tools to each of those who attend the lecture as well as raffling off larger design items! Both breakfast and lunch will be provided at the event. Please register if interested!

    The following is the schedule for the event:

    Start Time

    Finish Time



    7:00 AM

    8:00 AM



    8:00 AM

    9:00 AM


    Aaron Beavers

    9:10 AM

    10:10 AM

    Dampers, Fans, Coils - Spotless AHU Design

    Ryan Hirschi/Mark Addler

    10:20 AM

    11:20 AM

    Intro to Controls and Building Automation Systems

    Chad Best

    11:30 AM

    12:30 PM

    VFD Basics

    Chris Richards

    12:30 PM

    1:30 PM




    For those interested in donating design tools or being a sponsor for the event, please contact Rick D'Andrea @ [email protected]

    Don't miss out on this great opportunity! Looking forward to seeing some up-and-comers attend this event!

    March 26, 2021
    7:00 AM to 1:30 PM

    Holiday Inn & Suites
    3220 S 48th St
    Phoenix, AZ 85040


    covid-19 contribution

    Our members donated $314.97 to Valleywise Health. This gift is specifically for COVID-19 Emergency Relief.

    The foundation receives allotments from the national stockpile, but since all hospitals are receiving supplies, the shipments are not enough to get them out of the “red zone” on certain items.

    The foundation will buy extra-small N95 masks, surgical and procedural masks, and medium exam gloves.

    Thank you for every individual contribution