In the United States and Japan, nine in ten homes have air conditioning.

Omissions

• The exact US figure is 88% (EIA RECS 2020), slightly below 90%, but within normal rounding of 'nine in ten'.
• The Japan figure ranges from about 86% (Statista consumer survey, respondent-based) to 90–93% (Our World in Data, Nippon.com survey); the higher figures refer to household-level AC ownership.
• The Our World in Data figures (US 90%, Japan 93%) are dated 2025 and available before the session date of 2026-07-08; the EIA figure comes from the 2020 survey published in 2022.

Sources

• PrimaryU.S. Energy Information Administration (EIA) — Today in EnergyAccording to the most recent results from the 2020 Residential Energy Consumption Survey, 88% of U.S. households use air conditioning (AC).
• SecondaryOur World in Data — Data insightsIn Japan and the United States, AC adoption is almost universal; at least 90% of households have it.
• SecondaryOur World in Data — Share of households with air conditioningShare of households with air conditioning 2025: Japan 93%; United States 90%; China 79%.
• SecondaryNippon.com — Japan DataA survey in Japan found that 92.5% of the respondents have an air conditioner in their home.