We were late to the SMS game in the US as well, most European countries saw mass SMS adoption back in the late 90s and early 2000s, whereas it didn’t catch on in the same way till about 2005 or 2006 here. I still remember the days of being limited to 400 texts a month, and having certain friends growing up who I couldn’t text because their parents would not get a plan that had any buckets of them.
Right now in summer: 67 overnight while we sleep (helps that we have tiered power pricing where late night power is almost half the price of it during the day), 72 when we’re up, and 80 between 2 and 6pm when we have the most expensive power hours. Luckily we’re in an apartment that’s like three years old, so it’s surprisingly well insulated and hasn’t gotten above 73 during those hot hours.