Popular Mechanics has a fun timeline of air conditioning. Given that it is the middle of summer and I live in Texas, I can’t imagine living without A/C. It is sometimes easy to forget that the first home-based air conditioning unit was installed for the first time 100 years ago “in the Minneapolis mansion of Charles Gates” and was “approximately 7 feet high, 6 feet wide, 20 feet long and possibly never used because no one ever lived in the house.” In 1970, only 36% of U.S. households had air conditioning. This percentage rose to 68% by 1993 and 87% by 2009 (this includes 81.6% of poor households). It also takes less energy in homes today, dropping to under 50% of U.S. home energy use. And to think no one before 1914 had one.
So, enjoy your A/C along with an extra dose of gratitude.