https://communities.bentley.com/products/building/performance/f/hevacomp-forum/130570/cibse-gain---temperature-riseI understand that you get different heat gains in the following scenarios: Within CIBSE gain tool allow temperature to rise by 1degC Within room data increase summer design temp by 1degC There is a calculation procedure for the first scenarioen-USTelligent Community 12https://communities.bentley.com/thread/398353?ContentTypeID=1Thu, 12 Jan 2017 16:24:33 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:27a95b25-5fbb-442e-9492-1a9a0284311dDuncan BrownHi Michael <br /> <br /> This is from CIBSE Guide A - Section 5; Thermal response and plant sizing. 5.A2.5 - Effects of allowing room temperature to rise above set point<br /> <br /> regards,<div style="clear:both;"></div>