Air Conditioning Saves Lives but Threatens the Climate—Can Tech Fix It?

Air conditioning plays a vital role in modern life but carries a heavy environmental cost. The technology prevents thousands of deaths each year while consuming vast amounts of energy. Its growing use raises concerns about emissions and sustainability. In 2019, air conditioning helped avoid nearly 200,000 premature deaths worldwide. Yet its benefits come with significant drawbacks. The sector currently accounts for 7% of global electricity consumption and 3% of greenhouse gas emissions.

Improper disposal of old units worsens the problem. Refrigerants can leak into the atmosphere if not handled correctly. These chemicals contribute to global warming.

Demand for cooling continues to rise. Experts predict the number of air conditioners will triple by 2050. This growth pushes researchers to find greener alternatives. Solid-state cooling is one emerging technology under development as a potential replacement for traditional systems. The expansion of air conditioning poses challenges for energy use and emissions. New technologies like solid-state cooling may offer solutions. The need for sustainable cooling remains urgent as global temperatures climb.