I work at a large retail/grocery store that has a tin roof. We are in Central Indiana and our temps have been miserable for the past 2 weeks, in the upper 90's to lower 100's. During this time the AC at work has been having trouble keeping up, all of the employees complain because it is warm in the store. Last night one of the main sensors showed that the temps were reaching the critical stage and they were forced to shut down the entire system. They basically said that the condensors were working so hard and couldn't keep up since our area doesn't normally recieve heat like this. My questions is, is it possible for the condensers to overheat like this from running all the time? I suppose it is possible but never thought about it happening, and with the tin warehouse like ceiling/roof it is very hard to keep the heat out. The building and units are 17 years old.