If no one is home during the day, maybe try to stop in at your lunch break to make sure everything is running like it should.

Even then there is risk, I did go home for lunch and less than an hour later than a/c stopped. I don't even want to think about what I could have come home to if my boyfriend wouldn't have been home.

It is amazing just how quickly a room can heat up We just watched the temp go up and up and up.
And another quick cool down tip I actually just read about today on another chin forum is "Freezer Time". When someone's A/C froze, they were waiting for it to defrost, and their chin was getting hot, so they took everything out of their freezer and let their chin spend a couple of minutes in the cold to cool down. It is important to remember to NEVER SHUT YOUR CHIN IN THE FRIDGE OR FREEZER. This is for emergency cool downs with the fridge door open and you standing right there supervising. This can possibly save your chin's life in an emergency.