Our air conditioner is not working properly. It's been running all evening and it just keeps getting hotter and hotter in here. I have the repairman coming in the morning to see what can be done, but in the meantime, should I shut it down or let it keep running? I think if we turn it off, it would become unbearable in no time. It's in the upper 90s outside, with high humidity and a heat index of about 101. Inside it's around 87 degrees and rising.