Installation of mechanical insulation property as an energy or water efficiency measure in Federal buildings

Section 543(f) of the National Energy Conservation Policy Act (42 U.S.C. 8253(f)) is amended— (1) in paragraph (1)— (A) by redesignating subparagraphs (E) through (H) as subparagraphs (F) through (I), respectively; and (B) by inserting after subparagraph (D) the following: (E) Mechanical insulation property The term mechanical insulation property means insulation material, facing, or accessory product that— (i) is placed into service— (I) in connection with a mechanical system; and (II) in a manner that meets or exceeds the minimum requirements of Standard 90.1 of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (as in effect on the date of enactment of the Federal Mechanical Insulation Act of 2026); and (ii) results in a reduction in energy loss from the mechanical system.; and (2) in paragraph (3)(A), by inserting, including identification of energy- and water-saving measures (including the installation of mechanical insulation property, if applicable), after a comprehensive energy and water evaluation.