Before you uninstall your expensive software, know the drawbacks of V7:
If you want a "free" copy without licensing worries, try these avenues: Ashrae Psychrometric Analysis Cd Version 7-- Free
Short answer: No. The time spent hunting for a cracked, buggy, or malware-ridden copy of Version 7 is not worth it. Before you uninstall your expensive software, know the
Long answer: Leverage legitimate free tools. The ASHRAE online tool plus PsychroLib gives you 95% of Version 7’s functionality without legal or digital risk. If you truly need the exact CD interface for professional stamping, purchase a used copy from a retiring engineer or buy the latest version from ASHRAE—it supports the industry that supports you. If you want a "free" copy without licensing
Remember: Psychrometric analysis is too critical to trust to sketchy downloads. The goal is to condition air, not your antivirus software.
PsychroLib is an open-source library (MIT license) co-developed by researchers and validated against ASHRAE Handbook equations.