# Heating, Air Conditioning, and Refrigeration Mechanics and Installers

> Install or repair heating, central air conditioning, HVAC, or refrigeration systems, including oil burners, hot-air furnaces, and heating stoves.

- **SOC code:** 49-9021.00
- **Canonical URL:** https://singulariki.com/roles/role-49-9021-00
- **Also known as:** HVAC Mechanic (Heating, Ventilation, and Air Conditioning Mechanic), Refrigeration Mechanic, Refrigeration Technician (Refrigeration Tech), Service Technician (Service Tech), A/C Tech (Air Conditioning Technician), HVAC Installer (Heating, Ventilation, and Air Conditioning Installer), HVAC Service Tech (Heating, Ventilation, and Air Conditioning Service Technician), HVAC Specialist (Heating, Ventilation, and Air Conditioning Specialist)
- **Frame:** "AI exposure" means task overlap (how codifiable the work is), not jobs lost or a forecast. Every figure below is traced to a named public dataset.

## What this work is

**Core tasks** (O*NET):
- Test electrical circuits or components for continuity, using electrical test equipment.
- Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.
- Study blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components.
- Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.
- Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.
- Adjust system controls to settings recommended by manufacturer to balance system.
- Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.
- Repair or replace defective equipment, components, or wiring.
- Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.
- Install or repair self-contained ground source heat pumps or hybrid ground or air source heat pumps to minimize carbon-based energy consumption and reduce carbon emissions.
- Install, connect, or adjust thermostats, humidistats, or timers.
- Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers.

## Skills, tools, capabilities

**Knowledge, skills & abilities** (O*NET, highest importance first):
- Mechanical _(knowledge)_
- Building and Construction _(knowledge)_
- Customer and Personal Service _(knowledge)_
- Problem Sensitivity _(ability)_
- Near Vision _(ability)_
- Deductive Reasoning _(ability)_
- Operations Monitoring _(transferable_skill)_
- Oral Comprehension _(ability)_
- Arm-Hand Steadiness _(ability)_
- Finger Dexterity _(ability)_
- Visual Color Discrimination _(ability)_
- Critical Thinking _(essential_skill)_

**Skills in demand:**
- Deductive Reasoning _(Common Skill)_
- Finger Dexterity _(Common Skill)_
- Inductive Reasoning _(Common Skill)_
- Critical Thinking _(Common Skill)_
- Visualization _(Specialized Skill)_
- Reading Comprehension _(Common Skill)_
- Installation _(Specialized Skill)_
- English Language _(Common Skill)_
- Information Ordering _(Specialized Skill)_
- Complex Problem Solving _(Common Skill)_
- Active Listening _(Common Skill)_
- Physics _(Specialized Skill)_

**Tools & technology:**
- Adobe Acrobat _(hot technology)_
- Autodesk AutoCAD _(hot technology)_
- Microsoft Excel _(hot technology)_
- Microsoft Office software _(hot technology)_
- Microsoft Outlook _(hot technology)_
- Microsoft PowerPoint _(hot technology)_
- Microsoft Word _(hot technology)_
- SAP software _(hot technology)_
- Alerton Ascent Compass
- Atlas Construction Business Forms
- Building automation software
- Computerized maintenance management system CMMS

## AI exposure & outlook

- **AI task-overlap index:** 25th percentile (Low) across all occupations — composite of current-era exposure studies (ai-exposure-index-v1).
- **Overall AI exposure (Felten et al.):** 24th percentile (Low) — source: felten_aioe.
- **LLM task exposure, γ (OpenAI / Eloundou):** 19th percentile (Low) — source: eloundou_gamma.
- **AI assistant applicability (Microsoft):** 37th percentile (Moderate) — source: microsoft_applicability.
- **Frey–Osborne (2013, historical computerization estimate):** 55th percentile — kept separate from current-era studies.
- **Remote-capable (Dingel–Neiman):** no — task structure, not who actually works remote.
- **Projected employment (BLS 2024–34):** 8.1% growth (Growing fast); 40.1k annual openings; 425.2k → 459.7k jobs.
- **Pay & employment (BLS OEWS, May 2024):** median $59,810; 396,870 employed.

## Sources

- **O*NET** (30.3) — U.S. Department of Labor / National Center for O*NET Development. https://www.onetcenter.org/database.html
- **BLS Occupational Employment and Wage Statistics (OEWS)** (May 2024) — U.S. Bureau of Labor Statistics. https://www.bls.gov/oes/
- **BLS Employment Projections** (2024–2034) — U.S. Bureau of Labor Statistics. https://www.bls.gov/emp/
- **Anthropic Economic Index** (v4 (2026-01-15) + v2 (2025-03-27)) — Anthropic. https://www.anthropic.com/economic-index
- **Microsoft “Working with AI”** (working-with-ai) — Microsoft Research. https://www.microsoft.com/en-us/research/
- **“GPTs are GPTs” (Eloundou et al.)** (arXiv 2303.10130) — OpenAI / academic. https://arxiv.org/abs/2303.10130
- **AI Occupational Exposure (AIOE)** (Felten, Raj & Seamans) — academic. https://github.com/AIOE-Data/AIOE
- **Frey & Osborne (2013)** (frey-osborne-automation) — academic. https://www.oxfordmartin.ox.ac.uk/publications/the-future-of-employment/
- **Dingel & Neiman (2020)** (dingel-neiman-workathome) — academic. https://github.com/jdingel/DingelNeiman-workathome

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_Generated from Singulariki's joined dataset; data snapshot 2026-06-02T21:00:32.945303+00:00. https://singulariki.com/roles/role-49-9021-00_