A federal appeals court overturned a Bush rollback of air conditioner efficiency standards, finding that it violated the National Appliance Energy Conservation Act, which prohibits such backsliding.
The Clinton administration, in its final weeks, required that most new air conditioners and heat pumps be made 30 percent more energy efficient by 2006. But the Bush administration immediately lowered this requirement to 20 percent, which would have created substantially more demand for power.