I used to look at the state capitol building when I lived here last and imagine the workers dealing with all that heavy stone, laying the floors, installing the woodwork, in the depth of a Texas summer. My old house had two window-unit air conditioners and there were days when I was just immobile in the living room as the unit wheezed in cold air. The kitchen didn't have one, and as I remember I ate out a lot, or else ate salads. The refrigerator worked fine; my landlord's brother owned a used appliance store. There was even an ice machine. The electric bills were frightening, especially once I went back to freelancing. The office had the other machine, so sitting in it was okay, and it connected to the sleeping porch/bedroom, a room lined with windows that was just wonderful before and after the summer and winter weather. So life wasn't too bad once you got used to not doing too much. It could have been worse: I could have been working construction.
But then I moved to a place without air conditioning entirely. You didn't need it for the 45 or so days of summer in Berlin, of course, but really, summer in southern France wasn't so bad, except maybe for a week at its height. Which would be right about now. The French cleverly invented shutters, big wooden doors that you could close without closing the windows, so that air could circulate.
The place I live now has central air/central heat, CACH, as the real-estate listings have it, and what I discovered over the winter is that the house is very well insulated. I'd unthinkingly step into the garage and suddenly it was winter, just as now I walk in there and it's like an oven. (Well, it does face east). I've got the thermostat set for 79º, which is about right. The temperature at night slips below that most of the time so that I'm not running the compressor all the time, and the well-insulated interior keeps use at a minimum, although it steps up during the afternoon.
As it should: these past couple of weeks, we've been into the three-digit range. Today's high is forecast for 102º, low of 79º. These are the dog days, the days when Sirius the dog star is above us. Might be: I rarely go out at night, and anyway, the city illumination in the distance would negate seeing it, even if I did know a damn thing about stars, which mostly I don't.