Air-conditioning is not mainstream in the Bay Area — I also follow suit and don't have it in my pad. However, each year, as Spring turns up the heat, I contemplate forking over the cash to have central air installed. After doing the math, it makes a lot more economic sense to sweat it out on those seldom sweltering days. For me, it's tough, because before moving to Northern California I always had AC, but what about you? Does your home have air-conditioning?