I realised not so long ago of this rather ironic fact that the heat was much less of a problem when I was in San Antonio, Texas. There the weather remained so scorching for the majority of the year (it gets very hot around March and remains so until like November, then even during the winter months you can hang out in your shorts most of the time), in such climate air conditioning is an essential thing, therefore you would spend much of the day inside the air conditioned environment, you would only feel the effect of the heat when you walk out of the door and to your car, which you would turn on the A/C immediately as well. Having said that though, I must mention it was not a pretty experience looking at the electricity bill every month!
Here, we have air conditioning in our computer room and bed room, but not in the kitchen. Makes a good excuse to have a dinner of ice cream and watermelon though!!