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Heating, Air Conditioning, and Refrigeration Mechanics and Installers vs Stationary Engineers and Boiler Operators

Side-by-side · O*NET · BLS · AI-exposure research · Anthropic Economic Index

A factual, source-backed comparison of Heating, Air Conditioning, and Refrigeration Mechanics and Installers and Stationary Engineers and Boiler Operators on the dimensions both occupations carry. Every figure is a position within an independent published dataset — not a verdict on which job is better, safer, or more “future-proof.”

Heating, Air Conditioning, and Refrigeration Mechanics and Installers Stationary Engineers and Boiler Operators
Median pay · BLS OEWS
$59,810
$75,190
Employment · BLS OEWS
396,870
30,780
AI exposure (percentile) · task overlap, not automation
37th pct
28th pct

At a glance

Dimension Heating, Air Conditioning, and Refrigeration Mechanics and Installers Stationary Engineers and Boiler Operators
Median pay $59,810 $75,190
Employment 396,870 30,780
Employment outlook (2024–34) · BLS projection Growing fast (+8.1%) About average (+2.2%)
Annual openings · BLS projection 40,100 3,800
Typical education · O*NET Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree. Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.
AI exposure · published exposure studies Moderate · 37th pct Low · 28th pct
Global GenAI gradient · ILO ISCO-08 · via crosswalk 36th pct · 21% of tasks 32nd pct · 20% of tasks
Observed AI use · Anthropic Economic Index — —
Mostly remote-capable · Dingel–Neiman No No

Pay and employment are BLS OEWS estimates; outlook and openings are BLS 2024–2034 projections; AI exposure and observed-use figures come from separate research and reflect exposure and usage, not predictions that either job will disappear. Compare like with like.

Skills

Shared: Mechanical, Problem Sensitivity, Near Vision, Deductive Reasoning, Operations Monitoring, Oral Comprehension, Arm-Hand Steadiness, Finger Dexterity, Critical Thinking, Troubleshooting, Inductive Reasoning, Manual Dexterity, Engineering and Technology, Reading Comprehension, Repairing, Computers and Electronics, English Language, Active Listening, Complex Problem Solving, Quality Control Analysis, Oral Expression, Information Ordering, Category Flexibility, Multilimb Coordination, Public Safety and Security, Physics, Mathematics, Active Learning, Monitoring, Equipment Maintenance, Judgment and Decision Making.

Specific to Heating, Air Conditioning, and Refrigeration Mechanics and Installers

  • Building and Construction
  • Customer and Personal Service
  • Visual Color Discrimination
  • Installation
  • Visualization
  • Extent Flexibility
  • Speech Clarity
  • Design

Specific to Stationary Engineers and Boiler Operators

  • Chemistry
  • Operation and Control
  • Perceptual Speed
  • Coordination
  • Written Comprehension
  • Selective Attention
  • Control Precision
  • Reaction Time

Knowledge, skills & abilities O*NET rates as important for each occupation. “Shared” are common to both; the columns list what is distinctive to each (top by the order O*NET surfaces).

Tools & technology

Shared: Spreadsheet software , Office suite software , Electronic mail software , Presentation software , Word processing software , Enterprise resource planning ERP software , Facilities management software , Data base user interface and query software , Graphics or photo imaging software .

Specific to Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Specific to Stationary Engineers and Boiler Operators

Full profiles

This page is a summary. See the complete source-backed profile for Heating, Air Conditioning, and Refrigeration Mechanics and Installers or Stationary Engineers and Boiler Operators — tasks, the full skill graph, tools, work context, preparation, wages by percentile, industries, AI exposure and the AI work map.

More comparisons

Related occupations you can place side by side on the same sourced scale.

Sources for this page

Every figure above traces to a named public dataset and the exact release below — not hand-written opinion. See the full methodology for what each measure does and does not mean.

Data compiled June 2, 2026. Figures are estimates, not advice.

Cite this page
Plain

Singulariki. "Heating, Air Conditioning, and Refrigeration Mechanics and Installers vs Stationary Engineers and Boiler Operators." Singulariki: a source-backed encyclopedia of work. Built from O*NET 30.3; BLS Occupational Employment and Wage Statistics (OEWS) May 2024; BLS Employment Projections 2024–2034; Anthropic Economic Index v4 (2026-01-15) + v2 (2025-03-27); Microsoft “Working with AI” working-with-ai; “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130; AI Occupational Exposure (AIOE) Felten, Raj & Seamans; ILO / Gmyrek et al. GenAI exposure gradient 2025; IBS O*NET-SOC ↔ ISCO-08 occupation crosswalk 2022; Frey & Osborne (2013) frey-osborne-automation; Dingel & Neiman (2020) dingel-neiman-workathome. Accessed June 7, 2026. https://singulariki.com/compare/heating-air-conditioning-and-refrigeration-mechanics-and-installers-vs-stationary-engineers-and-boiler-operators

APA

Singulariki. (2026). Heating, Air Conditioning, and Refrigeration Mechanics and Installers vs Stationary Engineers and Boiler Operators. Singulariki: a source-backed encyclopedia of work. Retrieved June 7, 2026, from https://singulariki.com/compare/heating-air-conditioning-and-refrigeration-mechanics-and-installers-vs-stationary-engineers-and-boiler-operators

BibTeX 
@misc{singulariki-heating-air-conditioning-and-refrigeration-mechanics-and-installers-vs-stationary-engineers-and-boiler-operators,
  title  = {Heating, Air Conditioning, and Refrigeration Mechanics and Installers vs Stationary Engineers and Boiler Operators},
  author = {{Singulariki}},
  year   = {2026},
  note   = {O*NET 30.3; BLS Occupational Employment and Wage Statistics (OEWS) May 2024; BLS Employment Projections 2024–2034; Anthropic Economic Index v4 (2026-01-15) + v2 (2025-03-27); Microsoft “Working with AI” working-with-ai; “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130; AI Occupational Exposure (AIOE) Felten, Raj & Seamans; ILO / Gmyrek et al. GenAI exposure gradient 2025; IBS O*NET-SOC ↔ ISCO-08 occupation crosswalk 2022; Frey & Osborne (2013) frey-osborne-automation; Dingel & Neiman (2020) dingel-neiman-workathome. Accessed June 7, 2026},
  url    = {https://singulariki.com/compare/heating-air-conditioning-and-refrigeration-mechanics-and-installers-vs-stationary-engineers-and-boiler-operators}
}

Citations name the underlying public dataset releases — they reflect what this page is built from, not just the URL.