This study is concerned with the building thermal performance education in the context of computer application. The project contains the original script coded in Maxscript for use in Autodesk 3ds Max. The tool workflow and functionality focus on the thermal calculations connected with sculpturing manipulation of architectural volume in pre-conception project stages, when detailed project solutions are undefined. The algorithm is based on the manual methods included in the curriculum. The paper also presents a study of software analyzing thermal performance as a justification for the script vision and educational implementation. The script is rather an addition than alternative for existing software, so it does not assume any resignation from more sophisticated products.