When are you supposed to close doors?

Posted by FailFastandDieYoung@reddit | AskAnAmerican | View on Reddit | 32 comments

I was always taught when I open a door, to close it after I pass through it. I've just moved into a new apartment and most of the residents don't close the doors. There's an iron gate securing the building, but a set of interior doors immediately behind them leading to each unit. I don't mean unlocked, I mean literally open. Even their unit doors are open, similar to a college dorm. It's this normal? More than just for safety's sake I don't want the heat (that we pay for) to escape the building.