ASHRAE Tucson Newsletter


One of our continuing pursuits is helping to grow the membership of our local Student Branch.

Think back and reflect on what career path decisions you made in your late teens and early 20's, in a "what I wish I had known" kind of way. These ideas and lessons could really help the students in both the short and long term, and ASHRAE is a perfect place to pass along that knowledge.

Talk to any of the board members at our lunch meetings, or send your ideas to When students do attend, please go out of your way to greet and welcome them. The most meaningful take-away for them may be meeting you.


  • Topic: Energy-Water-Air Conditioning Nexus in Southern Arizona, Part 2
  • Date: Wednesday, February 8th, 2017
  • Time: 12:00 noon - 1:30pm
  • Location: Barrio Brewing Company
  • RSVP: Click Here

This presentation develops a comparison of source and site water and energy  consumption for various methods of building air conditioning, then compares estimated annual performance of four currently available alternatives. Side by side operating cost comparison provides insight on sensitivity of economic performance on water and electric power rates and timing. Presentation concludes with discussion on the implications of  projected utility rate behaviors over the next 20 years on current investment decisions in new and renewal HVAC systems.

Henry Johnstone, P.E.

Henry Johnstone, P.E. serves as the President of GLHN Architects & Engineers, Inc. in Tucson, AZ. As a senior mechanical engineer, he has been Project Manager and led multi-disciplinary teams on numerous large-scale projects for public sector including governmental, municipalities, and higher educational projects, including the $50 million Residence Life Building Renewal, a $15 million Phase VI Utilities projects at the University of Arizona, and $50 million Utilities Infrastructure Renewal project at the University of New Mexico.  Henry, is a member of IEDA and has presented papers at previous IDEA conferences in Reno, Pittsburg, Chicago, and Boston.



  • Speaker: James Vallort (ASHRAE Distinguished Lecturer)
  • Topic: Heating/Cooling Plant Strategies
  • Date: Wednesday, March 8th, 2017
  • Time: 12:00 noon - 1:30pm
  • Location: Barrio Brewing Company





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ASHRAE Tucson Chapter · 7337 E. Tanque Verde Rd. · Tucson, Arizona 85715 · USA

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