It's 105 here in Tucson today and I still haven't turned the AC on (we have dual cooling and I run the Evap as long as I can - what a cheapskate I am). My home was built in 55 and is made of Adobe - which has a decent R value and thermal storage capacity. But any day now the wifey will start groaning and I'll have to switch over to the AC...

...it's a dry heat - you know, like an oven.

-Buzz