Earlier quoted context omitted.
> Another thing we don't really have is air conditioning (might be a climate thing). This one is a climate thing.
Certainly for California. But what about New York for example? Have a look: http://www.eia.gov/consumption/residential/reports/2009/air-... // Can't find numbers for Germany, but I can tell you that I don't know anybody who has AC at home. (I'm not a hippie.) // You know how examples work, right? The data is pretty clear: More than 60% of households in the USA have AC.
edit: and that's without even accounting for humidity