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Version 2.51 prices

Version 2.51 is the most stable and widely used. 

Thermoptim version 2.51 prices are as follows (the main differences between the labels are presented here):

Version Education Classroom 360 Euros 10 annual licenses
Standard Version 1550 Euros 1 permanent license
Professional version 2600 Euros 1  permanent license
Industrial version 5200 Euros 1  permanent license

These prices are net prices for the seller, S4E2 not being subject to VAT. They are given in Euros.

The buyer will also be charged for delivery expenses as well as possible bank payment fees.

A reduction of 50% is made to Teaching institutes on all prices, except those of the Version Education Classroom, which is only intended for them.


Single annual licenses may also be sold to students at the price of 150 Euros (1 single annual license). If you are interested, please contact us at

Interactive charts version 2.51 prices are as follows:

Vapor charts 160 Euros 1 permanent license
Ideal gas charts 110 Euros 1 permanent license
Psychrometric charts 110 Euros 1  permanent license
Whole set (3 chart types) 330 Euros 3  permanent licenses




Upgrade from version 1.5 to 2.51 is 50% of the corresponding version 2.51 purchase price.


Upgrade from version 1.4 to 2.51 is 60% of the corresponding version 2.51 purchase price.


Upgrade from versions 1.1, 1.2 and 1.3 to 2.51 is 70% of the corresponding version 2.51 purchase price.