DC Circ. Backs DOE's Tougher Furnace Efficiency Rules

By Keith Goldberg ( November 4, 2025, 6:39 PM EST) -- The D.C. Circuit on Tuesday upheld the U.S. Department of Energy's tighter energy efficiency standards for furnaces and water heaters, rejecting arguments from gas utility and industry groups that the rules unlawfully force an expensive switch to new appliances....

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