He put them in the low 50s. I don't put them below the high 60s in the summer. We're in L.A., and I'm actually pretty heat sensitive, but I know how to be responsible with a thermostat. The main issue with it though was him just denying he did it. On multiple occasions. He blamed it on electrical problems with the A/C. It's always worked completely fine for me, and I've actually witnessed him turning it down really low before, so you understand my skepticism.
You should tell him to fuck right off with that. If the AC busts you'll likely be on the hook for it