At this time of year the temperature in Avery Hill Library varies. Please note that the heating is not independent of the rest of the Mansion Building but library staff regularly turn the radiators off or on according to needs. At this time of year we find it can be too cold one day and too hot the next. Unfortunately there are no windows that can be opened in the library and the Green room is a challenge with the glass roof.
We do open the Mansion lab at evenings and weekends, which is air conditioned. We advise you to work there if the temperature in Avery Hill Library is uncomfortable for you. The opening hours of the Mansion lab can be found at:
http://www.gre.ac.uk/it-and-library/students/support-and-training/computer-labs.
You can also borrow a laptop in the library and move to the North Hall area of the library which is cooler.