I did ask a member of the cabin crew to lower the temperature and she said she could not. A poster on another thread had the same experience in PE.

For me, cabin temperature makes a big difference in my comfort so a cooler seat is a better seat. I have seen on seatguru.com that some areas of a plane can get hot due to the location of the heating vents. Unfortunately seatguru does not cover TG. I appreciate the link to the diagram but I have already been there, done that.

Anyone else want to weigh in on this?