Studying and revising for exams throughout the long summer days can be gruelling task. Many students and teachers are left uncomfortable and demotivated, trapped in airless stuffy classrooms, such was the case with one university this summer. The university building is quite old and doesn’t have very good ventilation, this causes rooms to get too hot and stuffy. In any working environment it can be extremely hard to focus when you are overheated and do not feel comfortable. Because the quantity of people that occupy the class rooms vary from hour to hour, day to day, it is very difficult to regulate fixed air conditioning systems in order to provide the ideal level of cooling. Subsequently, a temporary solution is often ideal as you can reduce and increase the units needed.