1. The problem statement, all variables and given/known data I have access to a test facility for window type air conditioners that has a small room that is used to simulate the outdoors. I need to use the facility to test the effect of temperature on the performance of one of our window type AC units. The performance must e done as a function of temperature at the different air conditioner settings. 2. Relevant equations COP = Q/W = 1/ (T_outside/T_inside - 1) 3. The attempt at a solution I think finding the COP at different temps would give a good representation of the AC performance but I'm not sure how to experimentally determine this. Any help would be greatly appreciated.