a/c woes

a/c woes

forgive me if this isn't considered a poor skill. i thought it fit since i cannot afford to get this professionally done/looked at. My room is forever 10 degrees hotter than the rest of my apartment, and i was wondering if maybe cleaning the air vent would help? Anyone experience and then fix this annoying-in-the-florida-heat issue? What's the best way to clean that thing, anyway? It's a central air vent at the top of my wall, near the ceiling. thanks for any tips/tricks/links!
Florida greenery (picture heavy)

Florida greenery (picture heavy)

Plant Identification Help Please

Plant Identification Help Please

i need ideas

i need ideas

Spring!

Spring!

Hi!

Hi!

Terrace update

Terrace update