They don't make 'em like they used to
Surplus home energy usage in the face of unseasonable temperatures in California in 2003 and 2009, by year of construction. Electricity usage during hotter weather is more responsive for houses of more recent vintage. This is occuring despite mandated weatherization improvements that, in principle, reduce the need for climate control.
Bars represent 95% confidence intervals.
Source: adapted from Figure 6 of Levinson (2016)