Free app "duct calculator"

Our app "C.A.T.S. duct calculator" is getting more popular day by day - also internationally! Up to now there have been more than 20.000 downloads. Our duct calculator lays out like a conventional channel slide round, square and oval ventilation channels. In addition, it calculates the channel surface and the insulation allowance. Both the metric system (mm) and the imperial system (inches) are supported. The android version of this app is available in Google Play Store in English, Italian and German and it is for free.



CAD for sprinkler technology


Our CAD system for sprinkler technology has been used successfully by installation companies and planners for more than 25 years. The integrated calculation according to the Hazen-Williams and Darcy-Weisbach method, as well as the calculation of foam, are authorized by the Association of Insurers VdS. See the application in practice or test our free 15-day version

PLEASE NOTE: We now offer the possibility of using our separate Windows calculation without CAD - free 15-day version sprinkler calculation for Windows.

C.A.T.S. version 2017.1

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Our C.A.T.S. version 2017.1 eng. has been released last week and runs on AutoCAD versions 2015-2017 and BricsCAD 16.

Included in this version are our modules ventilation, piping and sprinkler as well as our brand new module electrical construction in 3D.

The trialversion is available here.


Thank you for visiting C.A.T.S Software at the ishneu in Frankfurt!

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We would like to thank you very much for your visit at our stall during the ISH!

We hope that we have been able to present our new functions of heating, ventilation, plumbing, sprinkler, electrical to you.
Hopefully you could also benefit from our experiences in the new big topic BIM.

If you have any further questions or would like to have a personal appointment, please do not hesitate to contact us!