The office I'm in is shared by four people. During the winter, the room tends to feel very cold, even when I'm wearing a sweater - one of my office mates even wears a coat inside the office. A couple of us have brought in space heaters to warm the room. However, the heaters are ineffective if the door is open, since the heat escapes into the hallway. Thus three of us would like to keep the door closed to keep the heat generated by the space heaters in the room.
Unfortunately, the fourth person in the office has strenuously objected to keeping the door closed. While they acknowledge the room is cold, they state that having the door closed sends a bad signal to our co-workers and management. To address that, one of us created a sign for the door that read "We're here, please feel free to come in - we have the door closed to keep the room warm." Unfortunately, this hasn't appeased the fourth person. They have claimed that management sees a closed door as "unprofessional". However, other people in our area keep their doors closed too, with similar signs on the doors. Also a check with our direct supervisor received a response along the lines of "I don't care if your door is closed or not as long as I can talk to you when I need to." The fourth person then just claimed that keeping the door closed is unprofessional and continued to insist that we keep it open.
While I don't know for sure, but I now suspect that this person has some other (psychological) objection to having the door closed that they aren't disclosing. However, I don't think they're likely to admit this if it's true and don't want to pry.
Basically, the fourth person has made such a continued nuisance of themselves that the three of us have acquiesced in an effort to maintain a peaceful co-existence. However, I definitely feel we've been bullied.
Going to management here seems likely to get a response telling us we need to learn to get along. I don't think it would look good either.
So, do folks have suggestions on how we might convince the other person to allow us to keep the door closed? As a side issue: Is it considered unprofessional to keep your office door closed?
(Unfortunately, getting the office temperature set to a more comfortable temperature isn't an option - the building uses a central environmental control. We're part of a large beaurocratic organization where things like this are set by "policy"; our direct management is aware of the situation, but their only response is to tell us to bring in space heaters.)