Federal Mechanical Insulation Act of 2026

Catherine Cortez Masto

Democrat · NV · Senator

Source: Congress.gov · FEC

• Steve Daines (R-MT)Original· 2026-04-16

Read twice and referred to the Committee on Energy and Natural Resources.

2026-04-16

Source: Congress.gov

This bill would expand federal energy efficiency programs to recognize mechanical insulation—the material wrapped around pipes and equipment in buildings—as a qualifying energy-saving upgrade, making it easier for building owners and businesses to get tax breaks or rebates when they install it. Mechanical insulation reduces heat loss from pipes and equipment, lowering heating and cooling costs and water waste, so the change would encourage more buildings to adopt this relatively simple efficiency improvement.

AI-assisted summary generated from the official bill metadata (title, subjects, actions) sourced from Congress.gov. Cached and reviewed. Always verify against the official text linked below.

[Congressional Bills 119th Congress] [From the U.S. Government Publishing Office] [S. 4312 Introduced in Senate (IS)] <DOC> 119th CONGRESS 2d Session S. 4312 To amend the National Energy Conservation Policy Act to include the installation of mechanical insulation property as an energy or water efficiency measure, and for other purposes. _______________________________________________________________________ IN THE SENATE OF THE UNITED STATES April 16 (legislative day, April 14), 2026 Ms. Cortez Masto (for herself and Mr. Daines) introduced the following bill; which was read twice and referred to the Committee on Energy and Natural Resources _______________________________________________________________________ A BILL To amend the National Energy Conservation Policy Act to include the installation of mechanical insulation property as an energy or water efficiency measure, and for other purposes. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, SECTION 1. SHORT TITLE. This Act may be cited as the ``Federal Mechanical Insulation Act of 2026''. SEC. 2. 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''. <all>

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