When ASHRAE updates the Handbook of Fundamentals , they stop manufacturing the previous version’s CD. However, many academic institutions, retired engineers, and public software archives have preserved Version 7 as abandonware. Because ASHRAE no longer sells or supports Version 7, it exists in a legal grey zone where it is widely distributed for educational purposes.
The ASHRAE Psychrometric Analysis CD Version 7 offers numerous benefits to users, including: Ashrae Psychrometric Analysis Cd Version 7-- Free
However, there are where you might obtain the software at no cost: When ASHRAE updates the Handbook of Fundamentals ,