We have a two-story house with central air conditioning. The downstairs area is always very cool (we keep the thermostat at somewhere between 72 and 75 in the summer). Both my office room and the spouse’s are upstairs, and their windows face the same way. We both spend quite a bit of time in them, playing World of Warcraft, and we both keep our doors closed because otherwise some combination of our 5 cats will come in and be disruptive while we’re trying to play. His room and mine are about the same size, though mine is a bit longer and narrower than his (his is more square). Both AC vents are near the doors. Both vents are open and blowing cold air (I checked by getting up on a stepstool and holding my hand under them).
For some reason, his room stays comfortably cool (albeit warmer than downstairs). Mine gets hot and stuffy. I end up having to run a fan and eventually open a window just to keep the place tolerable.
For awhile, I thought it might be because my computer setup was under a loft bed, and the mattress was blocking the cold air from getting to me. I removed the mattress (leaving just the latticework above, so there’s full airflow now) and that helped some, but not a lot.
Any idea what the problem might be, and what I can do to fix it? It’s mystifying me why all the conditions in the two rooms are basically identical, but mine gets hot and his doesn’t.