A federal court has upheld the Department of Energy’s furnace efficiency rule, requiring all new residential furnaces ...

WASHINGTON - Americans will soon need to switch to more efficient furnaces if they use natural gas for heating, the Department of Energy announced Monday. Under new standards set to take effect in ...

A DC Circuit panel upheld Biden-era Energy Department efficiency standards for gas-fired residential furnaces and commercial ...

A divided panel of judges rejected industry groups' arguments that the Biden-era standards violated federal law.