There is an insidious irony to climate change: as it gets hotter, more and more people are cranking up their air conditioners, which in turn contributes to global warming. Air conditioner (AC) sales are booming worldwide, especially in emerging economies such as China, India and Indonesia where rising incomes make them more affordable and a warmer, more humid climate a necessity. The International Energy Agency (IEA) predicts that around two thirds of the world’s households could have an AC by 2050, and the demand for energy to cool buildings could triple.
Keeping buildings cool contributes to global warming in two ways: ACs run on electricity,
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