I remember when I lived in this one house some years ago it had this huge long hallway.
This was upstairs and it divided the bedrooms.
One of the major things I will never forget about the long hallway was the fact that the air flow from the central heating and air conditioning system was very weak in that part of the house. It really made it too hot or too cold depending on the time of the year. Back in those days there was no such thing as a zoned heating and air conditioning system or HVAC zone control concept. There was really no way to attack the issue. So trying to sleep at night could be quite a challenge when the weather was bad. The bad air flow from the hallway would in turn make the bedrooms also not have the greatest air flow. I was so glad to move out of that house when the time came. Today because of that experience back when I ended up buying a zoned heating and air conditioning system for my home. Not because I have any air flow problems, but just in the event somehow or someway in the future this house has the same issue as it gets older. The zoned heating and air conditioning system was expensive, but it makes me feel good and gives me true piece of mind to know that the HVAC zone control will always be there if it is ever needed later on in the future.