Author Archives: Tjaden Ahrens

2023 March “Supertech” Meeting


Wednesday March 29th, 2023

10:30 – 11:30 – Rapid Air: Compressed Air Products (1PDH)
11:45 – 12:15 Buffet Lunch at Satellite Locations; Grubhub for virtual
12:15 – 1:15 Building Moisture Management (1PDH)
1:30 – 2:30 Acoustics – Basics of Noise Abatement (1PDH)


Satellite Locations:
– Shive Hattery – 4125 Westown Pkwy #100, West Des Moines, IA 50266
– ISG – 217 E 2nd St Suite 110, Des Moines, IA 50309


10:30 – 11:30 Rapid Air – Compressed Air Products (Virtual Presentation)
RapidAir is on the cutting edge of new, industry favored materials with regard to Compressed air and its uses. Our piping, filtration, and clean air solutions are being used by some of the worlds most recognized companies. Join us for Lunch and lets have a discussion about how you can best serve your clients when they ask you to implement Air Compression Systems.

Jeff Bolt, P.E., ASHRAE DL – IMEG
12:15 – 1:15 Building Moisture Management (Virtual Presentation)

David Wright, PE Associate Principal- Acoustics, AV and Technology – IMEG
1:30 – 2:30 Acoustics (Virtual Presentation)


Free for ASHRAE Iowa members
$50 per session for non-members

Food will be provided at the satellite locations. Only will be provided a $25 GrubHub Gift Card.


Registration is open now – it will close on March 27th.

Please register online if you are attending.

Please indicate the location you will be attending the presentation by selecting the corresponding ticket.

2023 ASHRAE Iowa Chapter – February Chapter Meeting

DATE: February 22nd, 2023

TIME: 5:00pm-7:30pm

5/5:30 – Social/Tour (Parking Information)
6pm- Dinner
6:30- Meeting & Tech Presentation
7:30 – ISG tour

LOCATION: ISG 217 E 2nd St Suite 110, Des Moines, IA 50309


The Transition from R410a:

  • Recent regulations for both efficiency changes and lower GWP refrigerants
  • Refrigerant options available for different applications with pros and cons of each
  • Process of implementing A2L refrigerant in equipment, including new safety tests and listing
  • Some notes on servicing units with A2L refrigerants
  • Decarbonization

Speaker:  Patrick Chapman, Senior Engineer w/AAON:

Patrick has been with AAON for 18 years in several diverse engineering roles including sheet metal design, product engineering, managing the engineering selection software, and now a senior role supporting the application engineering and warranty groups.


ASHRAE Member: Free
Non-ASHRAE Member: $20

See the ASHRAE Google Calendar on the main page and the registrations page.

2023 ASHRAE Iowa Chapter – January Chapter Meeting

DATE: January 30th, 2023

TIME: 5:00pm-7:00pm

LOCATION: Big Grove Brewery Des Moines – 555 17th St, Des Moines, IA 50309

PROGRAM: Come out and network with fellow ASHRAE members at Big Grove Brewery in Des Moines, food and drinks will be served, with the option of a Big Grove Brewery tour! Iowa Chapter Committee Chairs will give updates for the year, as well as, a pre-recorded virtual presentation from ASHRAE Society President.

See the registrations page or click here to register!

2022 ASHRAE Iowa Chapter – December Chapter Meeting (Joint with CSI/SMCI)

DATE: Monday December 20, 2021

TIME: 12:00 PM

Registration: 11:30
Lunch: 11:45
Program: 12:15-1:30

LOCATION: Holiday Inn Downtown 1050 6th Ave, Des Moines, IA, 50314

PROGRAM:  Julia Keen Presenting  “Managing for Diversity and Inclusion”

PRESENTER: Julia Keen, Professor of Architectural Engineering and Construction Science at Kansas State University will be presenting “Managing for Diversity and Inclusion”. Diversity and Inclusion are important focuses of employers today. The advantages commonly attributed to a diverse workforce cannot be attained by simply making a few strategic hires and implementing policies. There is a need for cultural change that not only benefits the traditionally underrepresented populations but also provides a better work environment for all employees. This presentation will explain and define diversity and inclusion and provide specific management strategies that can be employed to promote positive cultural change and attract/retain a diverse workforce.


Free for ASHRAE, CSI, SMCI members
$20 for non-members

Please see the registrations page or click the link here!

2022 ASHRAE Iowa Chapter November Meeting – Student Night with USGBC


  • Wednesday, November 30th, 2022


  • 4:30pm Tour of Iowa State University Student Innovation Center
  • 6:30pm Dinner at Sweet Caroline’s

REGISTRATION: ASHRAE Iowa Chapter November Meeting – Student Night with USGBC


Please join us for the ASHRAE Iowa Chapter Student Night on Wednesday, November 30th at the Iowa State University Student Innovation Center. Site address is 606 Bissell Rd, Ames, IA, 50011. Visitor parking is available near the Iowa State Armory in Lot 21 (900 Bissell Rd) and at the East Parking Deck (500 Wallace Rd). Limited street parking may also be available.

SIC tour to begin shortly after 4:30pm and will be led by Lincoln Pearce with IMEG. The tour will close with a Measurement & Verification presentation provided by the USGBC.

Dinner and drinks to follow at Sweet Caroline’s (316 Main St). Student Chapter scholarships will be presented and there will be updates from the Membership Promotion and Research Promotion Chairs.


ASHRAE & USGBC Members: Free
Non-Members: $25


2022 ASHRAE Iowa Chapter November Meeting – Professor Tom Lawrence – “The ‘Green Awakening'”

ASHRAE Iowa Chapter November Meeting – Tom Lawrence Presentation

Joint Meeting with the GoGreen Conference


DATE: Wednesday , November 9th, 2021

TIME: 11:30am – 1:00pm

LOCATION: RAMADA Tropics Resort & Conference Center 5000 Merle Hay Rd, Des Moines, IA 50322

REGISTRATION: See the registrations page or click here. (please register through ASHRAE even in you are already registered for the GoGreen Conference)


Professor Tom Lawrence – “The ‘Green Awakening’”

This session provides an overview of the rapidly evolving regulatory and economic market changes, and discusses methods and procedures for completing a building CO2 footprint. New regulations are in the works that will require compilation of greenhouse gas emissions, and programs will likely come about that involve carbon emissions trading or perhaps a ‘carbon tax’.

2022 ASHRAE Ethics Webinar – Ethics Workshop with Nick Maletta

Thursday October 27th, 2021
Ethics Training Webinar

Webinar link will be distributed to those who register online.

Professional Ethics Workshop

This workshop offers a detailed discussion of the general obligations and the rules of conduct that apply to design professionals as prescribed by their code of ethics. The discussion then explores the most common type of complaints, along with select individual complaints and the decisions rendered by the National Ethics Council.  Participants will review the professional code of ethics with attention to the recent changes to the code. Helps A/Es understand the topic of ethics as it relates to the design professions. This webinar presentation will satisfy half (1 PDH) of the State of Iowa’s PDH Professional Ethics requirement.

Nick Maletta – Holmes Murphy

ASHRAE Iowa members – Free
Digital gift cards for lunch will be dispersed to ASHRAE Iowa Member registrants.

Please register online (when it opens) if you are attending.

2022 ASHRAE Fall Frolic

Monday August 22nd, 2022 – 11:00 am Shotgun Start – NOTE THE START TIME!

  • 4-Person Best Ball Tournament
  • Dinner to follow right after Golf
  • Door, Pin Event and Place Prizes after dinner

Otter Creek Golf Course

4100 Northeast Otter Creek Drive
Ankeny, IA 50021

Otter Creek Golf Course (

$70 – 18-holes – 1/2-cart – Box Lunch
$40 – dinner
$5 – mulligans

Be a Sponsor for the event!

You can sponsor during your golf team registration or right now.  The earlier you sponsor, the more publicity you will get.  See below for sponsorship levels and our sponsors.

  • Silver – $100 – gets you a color sign at a tee box of one of the holes
  • Gold – $250 – also gets your name on a sponsorship list at the prize table and sponsors a pin event
  • Platinum – $750 – (Maximum of 4) also gets your name at the registration table, sponsors the main door prizes AND ALLOWS FOR SETTING UP AT A TEE BOX TO GREET GOLFERS ALL DAY

BIG Thank You to our 2022 Golf Sponsors:

Platinum – $750

Hydronic Energy


Setpoint Mechanical

Basepoint Building Automation

Gold – $250

DPT Group
Hart-Hammer, Inc
Mechanical Sales Iowa, Inc

Silver – $100

Alvine Engineering
DPT Group
Johnson Controls, Inc
Millennium Technology of Iowa
Rist & Associates
System Management & Balancing, Inc
The Waldinger Corporation
VHF Sales, Inc.
Woodman Controls, Inc.

Register a team online and pay through our secure payment system or mail a check to:

Hart-Hammer, Inc.
PO Box 65517 – 529 Elm St.
West Des Moines, IA 50265
Attn: ASHRAE Golf, Kevin Hart

See the Flyer for all of the information in a printable version (just don’t mail it in!  Register online!)

Golf and dinner Registration is Closed.

  • Payment MUST be made prior to registration closing or your spot may be given to next team on the waitlist.
  • You must register online – you can mail/deliver a check, just make sure it’s in by the deadline!


2022 Cedar Valley Chapter May Meeting


Tuesday, May 10, 2022


Cedar Ridge Winery & Distillery
1441 Marak Rd NW, Swisher, IA 52338


4:00-4:30 – Drinks, Appetizers and Networking
4:30-5:15 – Design and Analysis of Natural Ventilation Systems – Kishor Khankari
5:15-5:30 – Pizza Buffet Dinner
5:30-5:45 – Chapter Officer Nominations
5:45-6:30 – Stratified Air Ventilation Systems – Kishor Khankari
6:30 – Adjourn


$10 for virtual attendees
$20 for members in physical attendance
$30 for non-members in physical attendance


Registration is open now

Please register online if you are attending. Click link to the Cedar Valley Chapter website.