JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. To start the CIBSE heat loss calculation, and review the results Click the CIBSE Heat Loss (Simple) icon. The CIBSE Heat Loss (Simple) dialog box opens displaying the calculation results. Do one of the following: Review the results in the Summary report. orReview results for each room in the Full report. Do one of the following: Review the total heat losses on the Graph tab. orReview room heat losses individually on the Graph tab. Do one of the following: Click the Save icon to save the results to a PDF file. orClick the Print icon to print the active results view. Parent topic: CIBSE Heat Loss (Simple)