Established in 1984 (by whom?), Mistral is proud to be widely considered the 'generic' software system provider for the refrigeration & air conditioning industry. In its domestic market, Mistral software is used by more than 85% of refrigeration & air conditioning contracting firms and programs have been distributed to over 17,000 users in over 100 countries around the world.


Recent changes Mistral has made to installation and to file saving procedures.

In a nutshell All information on this page is repeated, in more detail where appropriate, in other related support pages.

Recent administrative changes to Mistral programs, 01 July 2016 to 12 May 2017.

Software installation from CD-ROM or through downloaded Zip files has been discontinued. All installations of program compendiums are now through downloaded single, Self Extracting exe files. Thus ending the need to use a third party Zip file decompression program and also to search for Setup files. The new self extracting exe file system is much simpler, faster and more reliable.

User program Access Registration Codes are now issued on-line directly to individual installers. This includes users installing under multiple user licence accounts. Eg Mistral ‘Corporate Licensees’.

Access Registration Codes are all set as ‘single use, one time use only’. Licensees entitled to multiple installations, for example for both desk top and Notebook computers, will therefore need to complete Access Registration Code request forms for each installation and in each case from the computer upon which the programs are to be installed.

LAN (Local Area Network) server installations remain largely unchanged except that again each remote user must enter a unique Access Registration Code to link with the server held primary installation at time of first program access.

Access Registration Codes are now logged securely on Mistral’s Internet server which records only date, time, access code issued, licensed program/programs and encrypted identity of licensee. No personal data is extracted, retained or forwarded; In accordance with the provisions of the Data Protection Act 1998 and revisions (UK).

User editable databases, for example for adding building material, food product, meteorological data etc., are now saved by default under Windows Admin/AppData/Roaming/Mistral. As now prescribed by Microsoft. Users may still select alternative (more logical?) paths of their own choosing.

User edits to databases are now clearly marked with a small suffix icon . Thus helping users identify which data was originally supplied with programs (frequently data that has been certified by qualified and authorised agencies) and which has subsequently been added or changed. Changed data will appear as additional to original data. Both original and user added data will appear in the same alphabetically arranged menus.

Backing up (saving) calculation files and personalized program settings can be achieved simply by clicking on the backup icon found on the master program group index form supplied with advanced program versions (Eg. 'Corporate Licensees').

Restoring previously saved calculation files and personalized program settings can be achieved simply by clicking on the restore icon found on the master program group index form supplied with advanced program versions (Eg. 'Corporate Licensees').

Do not attempt to pass copies of Access Registration Codes Copies of codes won't work!



Mistral's commitment:

"Bringing the benefits of computerisation to our industry - without the historically associated problems."