I don't work those planes very often (avoid like the plague) but I always get complaints that the exit rows are cold. This is pretty standard on all a/c exits. It is colder. Bring a blanket, coat, whatever and you will be more comfortable. If you find yourself hot, just start tossing stuff off! Concur with other posters that those are probably the best seats. Except the two (four?) Y seats up in Biz, if they aren't in use for crew rest, where you get Biz service in E seat.