San Diego
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About a quarter of San Diego County homes don't have air-conditioning, new census data shows.
Why it matters: AC can feel like a much-needed luxury here, with rising electricity costs and record-setting heat waves in the winter.
The big picture: Nationally, just 6.9% of U.S. households lacked AC in 2023.
Between the lines: AC is part cultural and part economic.
What's next: As climate change makes heat waves more common and more intense, more people may install AC to stay cool and healthy.