H.R. 3474 (119th)Bill Overview

Federal Mechanical Insulation Act

Energy|Building constructionEnergy
Cosponsors
Support
Bipartisan
Introduced
May 15, 2025
Discussions
Bill Text
Current stageCommittee

Referred to the House Committee on Energy and Commerce.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

This bill amends section 543(f) of the National Energy Conservation Policy Act to explicitly classify "mechanical insulation property" as an eligible energy or water efficiency measure for Federal buildings. It defines mechanical insulation property, requires that installed materials meet or exceed ASHRAE 90.1 as of enactment, and requires comprehensive energy and water evaluations to identify such installations when applicable.

Why people may split

Ambition vs cost: liberals emphasize climate gains; conservatives emphasize upfront costs

Watch point

Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clarifies that mechanical insulation installations qualify as energy or water efficiency measures for Federal building evaluations.

This bill amends section 543(f) of the National Energy Conservation Policy Act to explicitly classify "mechanical insulation property" as an eligible energy or water efficiency measure for Federal buildings.

It defines mechanical insulation property, requires that installed materials meet or exceed ASHRAE 90.1 as of enactment, and requires comprehensive energy and water evaluations to identify such installations when applicable.

The amendment clarifies that insulation installations reducing energy loss are covered under existing federal efficiency evaluation requirements.

Passage35/100

Substantively minor, non-ideological fix that should clear committee and floor if prioritized; calendar and competing priorities are main barriers.

CredibilityAligned

Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clarifies that mechanical insulation installations qualify as energy or water efficiency measures for Federal building evaluations. It integrates cleanly into the cited statutory provision and provides a clear, objective definition tied to an industry standard.

Contention52/100

Ambition vs cost: liberals emphasize climate gains; conservatives emphasize upfront costs

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Federal agenciesFederal agencies

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Federal agenciesMay increase energy and water efficiency in Federal buildings by reducing heat and chilled water losses.
  • Potential benefitCould lower long-term operating costs for agencies through reduced energy consumption.
  • Potential benefitLikely creates increased procurement demand for insulation materials and installation services.
Likely burdened
  • Federal agenciesCould raise near-term capital and installation expenditures for Federal agencies.
  • Potential burdenAdds procurement and compliance obligations to meet the specified ASHRAE standard.
  • Potential burdenMay limit flexibility to use alternative standards or emerging insulation approaches.
03 · Why people split

Why the argument around this bill splits.

Ambition vs cost: liberals emphasize climate gains; conservatives emphasize upfront costs
Progressive90%

Likely supportive because the bill advances energy efficiency and can reduce greenhouse gas emissions in federal buildings.

Views it as a straightforward, technical fix that helps federal climate and taxpayer-savings goals.

May press for stronger performance, funding, and labor or domestic procurement safeguards.

Leans supportive
Centrist75%

Generally favorable as a narrow, technical clarification that could save money for federal agencies.

Sees merit in codifying an accepted standard but wants clear fiscal analysis and implementation timelines.

Will seek cost-benefit transparency and phased rollout to limit budget shocks.

Leans supportive
Conservative45%

Mixed to somewhat skeptical: recognizes potential operational savings but worries about expanding federal mandates and tying requirements to an external technical standard.

Concerns center on added bureaucracy, unfunded obligations, and federal intrusion into building standards.

Split reaction
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood35/100

Substantively minor, non-ideological fix that should clear committee and floor if prioritized; calendar and competing priorities are main barriers.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • No cost estimate or Congressional Budget Office score included
  • Whether agencies have budget authority to implement identified upgrades
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Ambition vs cost: liberals emphasize climate gains; conservatives emphasize upfront costs

Substantively minor, non-ideological fix that should clear committee and floor if prioritized; calendar and competing priorities are main b…

Unlocked analysis

Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clarifies that mechanical insulation installations qualify as energy or water efficiency measures for Federal buildin…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
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