Latest Version: Tas 22.214.171.124
To download the latest version, click
New Training Course for Tas Systems
With the release of EDSL Tas 126.96.36.199, we are offering a new training course that will introduce existing Tas users to Tas Systems.
Click here for details of the new training course.
Our new FAQs now include answers to over 100 common support queries.
Read the latest FAQs
A complete solution for the thermal simulation of new or existing buildings
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.
Become a Low Carbon Consultant through our training courses.
Low Carbon Consultancy
Want to be an Energy Performance Assessor? Come to us for your training.
Energy Performance Assessor
Find information on the dates of our upcoming courses.
Our consultancy service can tailor to your needs.
Find out more
There is no limit to the size of building our consultants can model.
We perform overheating analysis of schools in compliance with Building Bulletin 101.
Trust our consultants with your EPC and Part L2 projects.
Tas's intuitive interface gives you the freedom to create your models with pinpoint
Fast, Accurate and Robust
Tas is the first DSM to be approved for Part L2 and EPC. Tas can porm level 5 assessments
on simple or complex buildings.
Call, fax or use our online email form for more information.