Well, readers, I must admit defeat. My heroic attempts to avoid paying a repairman for my air conditioner have all failed. I was supremely optimistic after replacing the filters. It may have been wishful thinking, but I thought the air in the vents felt cooler before I left.
When I returned after work, it was clear that I was delusional. It was 75 when I left and it was 75 when I returned. No change, but after I moved around in there a bit, it moved up to 76. Clearly, there is a need for professional help. Rats.
I did briefly contemplate living with it and simply sitting completely still all the time. But I don't know if Lena is capable of that, nor do I want to make her do so while I am away at work. So... tomorrow should be interesting. Hopefully by evening I will be back in my own bed. With my dog. And a nice, cool breeze.