I notice it weak at times. Today in NJ it was 94 and at startup through the first 2 miles - it was weak. After a bit - it was passable - certainly not meat locker here. I notice two things - fan speed is less than I'm used to (on highest recirc) - and temp is higher than what I'm used to. I just got out of a 2010 MDX and it was never suspect. I also have an infiniti FX and it was never suspect either. When I take it in for its oil change - ill have the dealer check the refrigerant levels and system...