FILE - A condenser sits on the roof during the installation of a heat pump on Jan. 20, 2023, in Denver. A bipartisan coalition of about 25 governors and the Biden administration are set to announce a pledge Thursday, Sept. 21, 2023, to quadruple the number of heat pumps in U.S. homes by 2030. (AP Photo/David Zalubowski, File) FILE PHOTO

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