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.

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LCC and EPC Assessment

In order to use Tas for UK regulatory work, including Part L2 assessment and EPC certification, you must first become certified by an accrediting body such as CIBSE. Details of the process are available here.

CIBSE require each candidate to be assessed for competency in using Tas before they can be accredited to use the software for Part L2 or EPC work. All candidates must:

  1. Attend up-to-date (2010) training for peforming Part L2 and EPC assessments using Tas.
    1. New users should attend the 3 day Tas Building Designer training course
    2. Existing users should attend the 1-day Part L2/EPC training course.
  1. Submit two Part L2/EPC projects to EDSL for assessment.
    1. These projects must be run in the latest version of Tas
    2. Each project will be assessed by EDSL at a charge of £250 + VAT per project.
    3. The models should be based on real buildings and must consist of 20-200 zones and a combination of HVAC air-side configurations (i.e. the building cannot be 100% Naturally Ventilated or treated entirely by fancoils).
    4. Candidates are required to submit their 3D Model (.T3D), Building Simulator source file (.TBD) and UK Building Regulations studio project file (.TPLP) along with a letter of declaration that the projects are their own work. These can be submitted as a ZIP file using our contact form.
    5. Applicants will be advised on aspects of the work that may need bringing up to standard and may be given one opportunity to correct minor errors in the project and resubmit it within 30 days. If significant changes are required, or the 30 days elapse, the applicant will be required to submit a new project and will be charged for this as a separate assessment.