Environmental Design Solutions Limited (EDSL) was formed in 1989 to commercially develop Tas Software. EDSL sells Tas software and consultancy services using Tas. EDSL believe that the mixing of development, consultancy and software support leads to a focused software product, with quality support available to end users.

skip to the main content area of this page
Skip Navigation Links.
Tas Version 9.1.4.2

As well as a small number of minor bug fixes Tas 9.1.4.2 includes an early Beta version of the DuPont™ Energain® Thermal Mass Builder. This utility allows the addition of DuPont™ Energain® Phase-Change Materials (PCM) to an existing Tas model. However, the Utility is still in Beta and so it should not be used in any Uk & ROI Building Regulations (e.g. Part L/EPC) projects.

For more information on DuPont™ Energain® PCM Products, click here.

To download Tas version 9.1.4.2, click here.