We replaced our furnace and central AC unit a little over 3 years ago. The ones we replaced were 27 (!) and 19 years old, respectively. The new AC unit died last year right around this time, when it was 90+ degrees. Apparently some freaking bug got fried on the "coil", which is a crucial AC unit innard. So we sweltered.
Today, I turned the AC on for the first time in a few days, when the inside temp in the main level of the house hit 78. Eventually, I figured out that the house really wasn't cooling off. Being relatively smart, I opened the back door to listen for the compressor and heard... ... ... nothing, of course. The outside AC compressor unit has crapped out again. So we turned off the AC at the thermostat, waited 10 minutes and turned it back on. No dice. TheHusband flipped the fuses just in case (although they were both in the "on" position). Nope.
ThePinkThing came downstairs saying that she couldn't sleep because she's too hot (duh, it's 85 degrees up there...). So we went around the upstairs opening every window, because (thankfully) it is at least 15 degrees cooler outside than inside. We also put a fan in TPT's room and turned it on. I am in hopes that she will fall asleep, and not decide to stick something in the fan "to see what happens".
Why are modern products so damn crappy? This is a Carrier unit, which is supposed to be good, but it has crapped out twice now in 3 years. Granted, I don't know how long the prior AC unit went between breakdowns, but it never broke down once in the almost 6 years we used it. We only replaced it, because I wanted a more energy efficient unit (hah, an energy efficient central AC unit; I must be smoking something), and the furnace had given up the ghost. So we decided to replace the AC unit at the same time. I totally regret it now.