that's the opposite problem that most people (from my experience) have in NYC. Apartments get too much heat (i.e. landlords can get seriously fined if they dont keep the building at a proper temp, so its just easier and safer for them to give too much heat). Also, many radiators in old buildings aren't really adjustable anymore (and hence you get all the heat). so its common for people in NYC to keep their windows open in the middle of winter to try to balance out the temperature.