I have been seeing that during the summer, little attempt to cool the plane is made at IAH. And (off topic) the last few trips I've had sometimes multiple gate changes as well at IAH. Previous summers not so much. And today, at the end of boarding, we had to de-planne to offloaf fuel due to a plan swap. By the time we reboarded (back on-topic) it was getting fairly warm (and with the shades down).

These are just my observationns, but ground ops at IAH seems to be a bit more disorganized lately. And most the planes I'm on in IAH are hot, but that's really nothing new.

fp