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Histometrics

Public reference

Industry primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Figures are drawn from official U.S. statistics and independent sources, with citations on every page. Most figures here are cited but not individually checked against a pinned source excerpt; the ones that are say so and link the excerpt. Industry research, not investment advice. Methodology.

core-primeras of 2026-07-19 00:00:00.000Z

Building Equipment Contractors

41 of 41 passages are linked to a pinned source excerpt.

Abstract only. The full primer, claim ledger, and evidence excerpts are available to signed-in users.

Scope

Industry coverage

  • canonical2382 · Building Equipment Contractors
  • partial-overlap238220 · Plumbing, Heating, and Air-Conditioning Contractors

Contents

What the full primer covers

  • Investment snapshot
  • Scope and boundaries
  • Market size and structure
  • Segments and business models
  • Customers and demand drivers
  • Value chain and industry economics
  • Competition and fragmentation
  • Operating model and KPIs
  • Capital, labor, and working capital
  • SBA and small-business context
  • Ownership and consolidation
  • Risks and disruption
  • Related research
  • Sources, methodology, and dates

Provenance

Sources

  • U.S. federal statistical agencies — sba-size-standards snapshot 2023
  • U.S. federal statistical agencies — cbp snapshot 2023
  • U.S. federal statistical agencies — ec-concentration snapshot 2022
  • U.S. Census Bureau — NAICS 2022 official titles (covered nodes and children)

Written with AI assistance from pinned snapshots of the official statistics listed above, then checked passage by passage against those snapshots by a second model from a different provider. That check tests whether a passage matches its cited source — it is not an audit, and it is not the independent verification the term carries in an investment context.