1. Air conditioning isn't omnipresent, even in office buildings. 2. Even if it is present, central air conditioning is rare. 3. Even if it is present, unless it

1. Air conditioning isn't omnipresent, even in office buildings. 2. Even if it is present, central air conditioning is rare. 3. Even if it is present, unless it is really, really scorching heat most won't turn on their ACs to save on electricity. A family of four will bunk up in a single AC room to sleep even if they have 3 rooms in their house.