Our clients



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More than 5000 engineers use our software in 8 languages!

Benefit from our 40 year experience in the field of energy engineering!



Air-handling unit factories  
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Heat exchanger factories

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Further companies

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Since 1970 we develop software for the calculation of heat exchangers. We can’t get a certificate because for us it is not possible to compare it with measurements.

But a lot of our customers have received certificates because they has let compare our software with their products

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