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AC Usage in Metro Cities
September 19 , 2025
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- Chennai records the highest air conditioner (AC) usage among seven metro cities, with an average of 4.4 hours per day.
- Nearly 23% of households in Chennai own more than two ACs, almost double the national average.
- Chennai has the highest refrigerant refill rate, with over 50% of AC units refilled annually, against the national average of 41%.
- Each refill costs an average of ₹2,300 in Chennai, the highest in the country.
- The most common refrigerant, HFC-32 (hydrofluorocarbon-32), has a global warming potential 675 times greater than carbon dioxide.
- Refrigerant leakage contributed to 52 million tonnes of carbon dioxide-equivalent emissions in 2024.
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