by Russ Roberts on October 25, 2007

in Standard of Living

In 1970, according to the American Housing Survey (from HUD and the Department of Commerce ,then called the Annual Housing Survey, Table A-1, p. 32), 36% of the 67 million households in America had air conditioning, 11% had central air. This is the earliest data available from this survey.

In 2005, the most recent data from the same survey, (Table 2-4, p. 66) 82% of the 15 million households with income below the poverty line had air conditioning, 52% had central air.


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