Ah apologies, it is possible this picture is of one who is a bit injured. It was wedged in a tough spot in the vent. It looks like it's backside could have suffered.

Hi there,
When taking our AC out today we found two of these bugs. i find them very interesting. I'd love to know what they are.

They are relatively slow crawlers, about 2-2.5cm I'd guess. I am trying to figure out if that is a probiscus I see under them. their antenna have little white stripes on ...