About two years ago, I went to visit one of our branch offices. Is not so far, about an hour driving.
That branch does not a have a server room, just a communication rack with a router, switches and telco equipment, plus a couple of UPS.
It has never been a model of a room, because it is simply a converted broom cupboard.
For that reason, the door is never locked. That way, in the hot days of summer, which easily brings the mercury to 35°C (~95F), the door can be fully opened to allow for some air circulation.
I have asked for an AC for the room, but of course the answer is yet to materialize.
On my visit, I could barely open the door.
When finally got it open, I discovered that the room was full, from floor to ceiling, of old newspapers.
Everywhere: on the rack, around the rack, inside the rack... it was impossible to reach switches, connectors, cables.
I was apoplectic.
There was so many risks... communications failure, overheating, fire...
I talked to the office manager and sure enough, the newspapers were promptly removed.
Only to be replaced with the janitor's stuff.
Now, the room is used as closet.