Nonpartisan civic infrastructure
AllCiv·Legis1
·

H.R. 3474

BillFederalHouseFloor Consideration
Federal Mechanical Insulation Act
About This Bill
Introduced
Latest Action · February 4, 2026
Placed on the Union Calendar, Calendar No. 411.
Congress
119th (2025–2027)
Introduced
May 15, 2025
Cosponsors (36)
18D 18R
View PDF ↗

Summary

Highlight any text to annotate
This bill clarifies that installing mechanical insulation on pipes, ducts, and other mechanical systems in federal buildings counts as an official energy and water efficiency measure under existing federal energy conservation law. The legislation defines mechanical insulation as materials that reduce energy loss from heating, cooling, and plumbing systems when installed to meet industry standards set by the American Society of Heating, Refrigerating and Air-Conditioning Engineers. The bill affects all federal agencies that manage buildings, as they would now be explicitly authorized to include mechanical insulation upgrades in their energy efficiency projects and evaluations. The legislation has broad bipartisan support with dozens of cosponsors and does not include any specific funding provisions or implementation deadlines, instead working within the existing federal energy conservation framework.

Take Action

Your position
Add a comment
to comment on this bill.
Annotate the text
Highlight any passage on the Summary or Full Text tab to attach a note. Annotations appear on the Annotations tab.