The most reliable way to get the latest, supported software is to purchase directly from ASHRAE. As a digital download, installation is immediate, bypassing the need for a physical CD. Version 9.0 incorporates all the features users loved in Version 7 and updates them with the latest industry standards, including ASHRAE climatic data for over 9,100 cities, 2023 TMY3 weather data, and data from standards like ASHRAE 55 and 62.1.

ASHRAE Psychrometric Analysis (often associated with Akton Psychrometric software in its underlying engine) is a desktop application designed to replace manual chart plotting with precise, digital calculations. Version 7 represents a specific, mature release of this software utility. Key Capabilities

To operate Version 7, your system would have needed to meet these specifications, which are quite dated by today's standards:

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Calculates exact energy and mass balances across system components.