Simple.... if they're big heat producing amps... don't be in the same room.
Neither of my tube amps, the Butler or Dodd MK II, put out so much heat the AC can't keep things under control.
using a small fan will eventually develop a new air flow pattern and aid cooling of the amp.
AS the input here regards a smallish room, large amps don't really seem in order, or the speakers ought be changed out probably.
A large wing span slow moving ceiling fan could be just the ticket too.... along with the aC of course.