mistral logo 56x75 Established in 1984, 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 distributed to over 25,000 users in 140 countries around the world.


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Mistral Associates - News October 2021


Mistral are pleased to announce Windows 11
compatible versions of all programs.

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Following many weeks prior to Windows 11 launch, Mistral's version 5.2j Beta is ready. Having undergone many hundreds of hours of exhaustive 'stress testing'.

As with all Mistral software introduced over the past thirty years this latest version is backwardly compatible with your old, saved load calculation, RAC equipment selection and refrigerant pipe sizing results files. In other words the latest version will still allow you to open and edit files up to 30 year old and to re-save them. A quality feature that very, very few other software developers can claim. Not even Microsoft Corporation themselves. Actually especially not Microsoft Corporation!

No new Access Registration Code should be necessary to over-write existing, currently active installations. However you will automatically be forwarded one if we think it may be necessary. Upgrading can be made to any PC not yet running Windows 11 (I.e. Still running Windows 10 Operating Systems) and your saved files are guaranteed to still be available and found automatically by this latest version.

As for the merits or otherwise of Microsoft's latest offering we make no comment other than to say that for the most part changes appear to be mainly cosmetic. Behind the scenes though we do hope many of Windows 10's shortcomings have been addressed. In particular the tiresome need to install intrusive, time consuming and confusing 'Critical Updates' every couple of weeks or so. So as to repair who knows what?

Mistral 'Corporate' and 'Subscription' licensees may download immediately and free of charge as usual, here:- Registration

If you are unable to find your unique Mistral Account Number then don't worry. You may use the Provisional Account Number displayed on the download request form and which will provide you with immediate access. Your Mistral Account Number will be forwarded to you within a couple of days.


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