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 have been distributed to over 25,000 users in more than 140 countries around the world.

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What is the difference between Update and Upgrade? Program validity check.

Right now, as you are reading this, somewhere in the world members of Mistral's highly qualified and experienced teams are working to both upgrade and update the world's leading RAC Application Engineering software. They expect to be paid for their work. Do you expect to be paid for yours?!

No one forces you to take advantage of Mistral's expertise but if you do then either you must pay, or if not you then someone else has to pay for the privilege on your behalf.

Quite apart from programs being constantly improved and enhanced, often at the suggestion of people like you, the very people benefitting from it, if you don't upgrade periodically then you will be missing the advantages that your competitors gain. Just as importantly -

Are you still using DOS or Windows 3.1?

Well we know the answer to that already. It is an emphatic "No". If you were still using DOS or Windows 3.1 along with all other Windows Operating Systems right up to Windows 10 and 11 then you couldn't be reading this!

Therefore, unless you have only very recently been introduced to personal computing, this means you must have upgraded your computer's Operating System, in other words, its 'Windows' system, at least twice and possibly five or six times and even as many as ten times.

And did you pay for these upgrades?

We know the answer to that too. It is also an emphatic "Yes", you did!

You might have thought that you had not because the new and upgraded Operating System was already installed on a new replacement PC that you purchased. That simply means you paid for it through the purchase price of the computer. It did not mean it was free.

The same applies to Mistral software. If you wish to upgrade your Mistral software installation then you must expect to pay for that upgrade.


Because writing software does not happen by accident and because software does not grow on trees! Someone has to be, and deserves to be paid to research, develop, test and constantly upgrade the code.


When a car manufacturer brings out a newer model of the car you had bought some years back you do not take your old one back and demand that the manufacturer supplies you with a new one for free! The same thing applies to computer programs and yes, just like cars, software also depreciates and it also 'wears out'!

Printer manufacturers let me download free 'Patches' whenever their software (printer drivers) need upgrading! So why don't you?

Well before we answer first of all let us just say that it is good that you now recognise that printer software effectively 'wears out', when an Operating System is upgraded for example, so now perhaps you will find it a little more acceptable to learn that every other piece of software, including Mistral's, does too!

The reason printer manufacturers give free 'patches' for software that is anyway perhaps less than one thousandth as complicated or expensive to produce as Mistral's system is of course because they want you to continue buying their ink. With a better than 3,000% profit margin!

Anyway, it isn't all bad news. Mistral values your custom. We regret though that our software is generally far too 'deep' to be upgraded through the simple application of 'patches'. We must charge for upgrades too but as a valued customer you will receive a generous upgrade discount. Mistral also offers economical 'Corporate Licensee' schemes, available now to everyone, to help mitigate these unavoidable costs. We also reserve the right though to adjust discounts depending upon the attitude of the customer!

Program validity check.

'Corporate' Licence RAC Industry Best Value Software Package

Fast, accurate, reliable and above all, exceptionally easy to use programs for RAC engineers and sales professionals. Improving competitiveness, helping to win orders and maintain QA systems. Reducing costs for both you and your customers alike.

icon_arwu.gifTwo minute tour of Mistral's legendary 'Coldwind Pro' multi-task program.
Completing tasks highly accurately in less than two minutes that can take even experienced engineers more than a couple of hours to do manually!

Reduce costs! At the same time improve your competitiveness to WIN more orders!

Mistral's commitment:
Bringing the benefits of computerisation to our industry - without the historically associated problems.

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