air conditioning load calculations SOFTWARE, HVAC, refrigerant, air conditioning load calculations, refrigerant recordkeeping, EPA compliance software, refrigerant compliance software, refrigerant tracking software, hvac software,



Click here to order a $79 update or replacement

We believe programs should be fast and easy to use. For these reasons we are constantly tweaking our programs to make them faster and easier to use as well as adding new features.

Another issue is that the Microsoft operating systems, particularly Windows 10 and Windows 8, cause some features to not work like they did on earlier operating systems. While we can make our programs backward compatible, no one can make them forward compatible, but we try to keep up.

Our current versions are HVAC-Calc Residential 4.0.70 and HVAC-Calc Commercial 4.0.70. To check your programs version number, simply look at the upper left of the title bar when the program is running. Version 4.0.70 (and newer) runs great on Windows 10 and on Windows 8 as well as earlier operating systems.

If you have an older version or you have lost your registration number, you should click here to order a $79 update. After we charge your card, you will get an email with a link to download an update and receipt by email.

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