What percentage of US households have AC?

According to the most recent results from the 2020 Residential Energy Consumption Survey, (RECS) 88% of US households use Air Conditioning (AC). Two thirds of US households use central AC or a central heat pump a their main AC equipment.
In 2020 the Midwest Census Region an South Census Region ha the highest percentages of households using AC, at 92% and 93% respectively. The lowest percentages of households using AC was 73% in the West Census Region; this census region includes households in several climate area, such as the marine climate region along the Pacific Coast, where residential AC use was 49%.

Although central AC units are the primary equipment type used in most of the United States, 50% of Northeast households primarily use individual AC units. Individual AC units include window and wall units, mini-splits, and portable units.
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RECS data show that newer homes are more likely to use AC in most climate regions. Nationally 83% of homes built before 1950- and 93% of homes built between 2010 and 2020 used AC. The greatest difference in AC use among old and new housing was in the marine climate region, where only 39% of homes built between 1950 used AC, and 66% of homes built between 2010 and 2020