: Includes ASHRAE climate data (e.g., from the 2009 or later Handbook—Fundamentals) for over 8,000 cities worldwide. Free Official Alternatives

Why do engineers go to great lengths to find this specific software? The features provided in the ASHRAE Psychrometric Analysis package streamline workflows that would otherwise take hours.

In real-world applications, air rarely undergoes a single process. It might be mixed with outside air, cooled, dehumidified, and then reheated. Version 7 allows users to plot these complex paths on the chart, visually identifying the "coil load" and the "grand total heat," which is vital for equipment selection.