Key air conditioning refrigerant production and use to drop 85% over 15 years under EPA rule

In what officials call a key step to combat climate change, the Environmental Protection Agency is sharply limiting domestic production and use of hydrofluorocarbons, highly potent greenhouse gases commonly used in refrigerators and air conditioners, the Associated Press reports.

The new rule announced Thursday follows through on a law Congress passed last year and is intended to decrease U.S. production and use of HFCs by 85% over the next 15 years, part of a global phaseout designed to slow global warming.

The administration also is taking steps to crack down on imports of HFCs, greenhouse gases that are thousands of times more powerful than carbon dioxide. They often leak through pipes or appliances that use compressed refrigerants and are considered a major driver of global warming. President Joe Biden has pledged to embrace a 2016 global agreement to greatly reduce HFCs by 2036.

White House climate adviser Gina McCarthy, a former EPA administrator, said the new rule was “a win on climate and a win on jobs and American competitiveness.″

The rule, set to take effect in late October, is expected to reduce harmful emissions by the equivalent of 4.5 billion metric tons of carbon dioxide by 2050, McCarthy said, a total similar to three years of emissions from the U.S. power sector.

EPA Administrator Michael Regan said the phasedown is backed

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