"The Biden administration is finalizing more stringent efficiency requirements for both window air conditioners and portable air cleaners on Thursday, the first set of efficiency standards that are new and not just a reversal of a Trump-era rollback.
Window air conditioners — also known as room air conditioners — are smaller air conditioners that can be put into window frames. They are the main cooling source for 21.4 million U.S. households, according to the Energy Department.
The new standards, shared first with The Hill, would save consumers a total of about $1.5 billion per year on their electricity bills, the Energy Department said. It also expects the standards to cut carbon dioxide emissions by 106 million metric tons over 30 years — the equivalent of the annual emissions of 13.4 million homes."