Self contained portable room A/C

Hi

We got moved into the new office and as luck would have it, my office is fairly warm. I'm hot natured.

I know this is asking a lot, but besides a plain box fan, anyone have an idea for a unit that can be placed in my little 220 sq ft office?

I'll take a humidity gauge up there tomorrow to see about maybe just a dehumidifier.

All the floor model portable A/C on Amazon require an air vent to outside--not possible where I am......

So, need something w/o drip or outside vent access.

As always, thanks.

(.-.)

Self contained portable room A/C