So it's not even May, but temps are already soaring above 100 here in Phoenix. I was wondering how the AC would fare, and the answer is that it's keeping up nicely, and I've only used ECO Lo so far. The car sat in the sun for about 2 hours this afternoon and it was 103, I got in and left in on Lo and in about five minutes I had to turn the fan down to a pretty low setting to keep from freezing my fingers off. I averaged 3.4m/kW on the way home, and half that was at 70mph. Not bad, RAV!