Part 2 to the whole bad news thing actually occurred on the same day as part 1 but thankfully wasn't as awful. When we returned from the emergency vet we climbed back into bed and tried to get some sleep. I didn't have much luck even though I was exhausted. I kept thinking I could still hear him breathing or feel him moving on the bed and it would just bring back so many memories. Still, we rested a few hours, had a late lunch and suddenly noticed that the heat was creeping up in the house. By about 7pm it was 76 degrees despite the thermostat being set to a chilly 68. Something was obviously wrong.
This wasn't the first time we lost our A/C. In fact I think it was the third time in three years so we were a LITTLE more prepared this time (i.e. we have a big ass fan) so the fan came out and the windows opened up and we tried our best to stay cool. For the next four nights it was at least 86F at night as we tried to sleep. I had grown up without A/C and put up with sleeping through hot nights but once you have it it's hard not to be spoiled by it.
In the end the A/C guy showed up and fixed it without even coming in the house.
Technical Explanation coming up:
Turns out the compressor (or something) had burned out (or something) and therefore was preventing the fan (or maybe something else) from sucking in air (or blowing it) from outside (or somewhere) and cooling it (or doing something with it).
The timing was kinda spooky. I knew the A/C was working that morning because I was freezing trying to look after Barnaby. He always did like it warm and at least it gave us something else to focus on. A tip for any of you who lose your A/C this year, make sure your ceiling fans are spinning in the right direction for summer. I think it's supposed to look clockwise (or something).
Thank you for all the comments about Barnaby. I really appreciate it.