Hands Down Software Releases HDPsyChart V9

Last year, we announced the first upgrade to HDPsyChart in over a decade: HDPsyChart V9. This upgrade has so many new features and bug fixes that they're too numerous to list here. However, here is a brief list:


  • Includes all new ASHRAE data such as:


  • ASHRAE data zone data from the 2015 and 2021 “Equipment Thermal Guidelines for Data Processing Environments – ASHRAE TC 9.9 Reference.”
  • ASHRAE climatic data from the 2017 and 2021 ASHRAE Handbook of Fundamentals.
  • Comfort data from ASHRAE Standard 55-2017 and 2020.
  • Ventilation from ASHRAE Standard 62.1-2016 and 2019


  • Includes new 2023 U.S. TMY3 Bin weather data that includes 8760 hourly data for 1000s of cities in the U.S.


  • Includes a brand new feature called "templates" that allow you to store an unlimited number of psychrometric chart "look-and-feels".


  • Includes more intuitive user-interface features such as double-clicking over the chart to open the state point form and plotting a point where you just clicked.


  • Works on the latest version of Windows


  • Includes access to an online licensee portal for self-registration


  • Includes an updated user manual, world-class support, and will include more frequent software updates.


  • For a complete list, click here.  

We are offering this upgrade at a reduced price for a limited time only. Click the button below, and then select SKU#: HD1016 to purchase the software upgrade.


(If you are an organization with multiple licenses, please email us at sales@handsdownsoftware.com to talk about our subscription service.)

HDPsyChart Tear-Off Notepads


We are now offering tear-off notepads with customized HDPsyChart images (i.e. - with your corporate logo). These are great for marketing promotions, classroom training, trade show handouts, and much more.


The following are specifications:


  • Size: 8.5" x 11"
  • Paper Type: 70 lb. paper uncoated
  • Printed Side: Front only (back is extra)
  • Padding: Padded with cardboard back
  • Glued Edge: Top
  • Sheets Per Pad: 25
  • Number of Pads: Minimum of 25
  • Printing Time: 3 business days


Click here for more details.

HDPsyChart Help is Now AI-Enabled


We have trained a simple AI model on the HDPsyChart V9 user documentation, and it is now available as a chat-bot on the HDPsyChart help page. Click here to try it out.


You can also access it directly from the HDPsyChart V9 software by selecting "Help" and the "Help - Web" submenu option.


HDPsyChart V9 Online Training


We are asked time and time again about offering online training of the HDPsyChart software. We do indeed offer 1-hour Zoom training sessions for small and large groups.


Our training sessions usually cover the basics of psychrometrics (for those engineers new to the industry) and then delve into using the HDPsyChart software application, itself. These sessions are always interactive so questions and comments are encouraged throughout the entire training session.


Also, we often record these sessions so you can watch them on your own later on or share them with colleagues.


Click here to contact us for more information about HDPsyChart online training.

HDPsyChart V9 OEM Version


Over the years, Hands Down Software has customized the HDPsyChart desktop software tool for over 400 major corporations and organizations include all major HVAC manufacturers, data center providers, and architectural/engineering firms world-wide.


If you would like to customize HDPsyChart V9 with your logo and color-scheme, you can do so at a reduced price for a limited time only. Click here and select SKU#: HD1008 and follow the instructions.


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