I lived in an apartment for a summer in 2022 and the area didn't regulate cooling requirements since summers were very mild when the regulation was written. The building was new construction and only "cooled" common areas while exhausting through the apartments. At that point summers regularly had 95F/35C for ~6 weeks with peaks above 110F/43C and lows not dropping below 85F/29C.

Furthermore you could only crack the windows and one of the walls was entirely window. I had taped up foil and cardboard to block the sun.

Anyways the entire apartment building got covid simultaneously at the peak of the heat.