Hands-on
2026-02 · Machine Learning/Expert
Explore a possible path
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.
How does this connect to your interests? →A look at the work
- Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.
- Test electrical circuits or components for continuity, using electrical test equipment.
- Repair or replace defective equipment, components, or wiring.
- Lay out and connect electrical wiring between controls and equipment, according to wiring diagrams, using electrician's hand tools.
- Schedule work with customers and initiate work orders, house requisitions, and orders from stock.
- Estimate, order, pick up, deliver, and install materials and supplies needed to maintain equipment in good working condition.
- Install, connect, or adjust thermostats, humidistats, or timers.
- Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.
A selection of source-listed tasks; duties vary by role and employer.
Interests involved in this work
These source scores describe occupational work activities. They are separate from your personal test results.
7.0 / 7
Investigative
2026-02 · Machine Learning/Expert
Creative
2026-02 · Machine Learning/Expert
Helping people
2026-02 · Machine Learning/Expert
Enterprising
2026-02 · Machine Learning/Expert
Organizing
2026-02 · Machine Learning/Expert
Skills to explore
Source-reported importance on a 1–5 scale. Try a course, project or conversation to learn what these skills involve.
Operations Monitoring
Watching gauges, dials, or other indicators to make sure a machine is working properly.
2026-08
Troubleshooting
Determining causes of operating errors and deciding what to do about it.
2026-08
Critical Thinking
Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions, or approaches to problems.
2026-08
Repairing
Repairing machines or systems using the needed tools.
2026-08
Equipment Maintenance
Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.
2026-08
Installation
Installing equipment, machines, wiring, or programs to meet specifications.
2026-08
Reading Comprehension
Understanding written sentences and paragraphs in work-related documents.
2026-08
Equipment Selection
Determining the kind of tools and equipment needed to do a job.
2026-08
Systems Evaluation
Identifying measures or indicators of system performance and the actions needed to improve or correct performance, relative to the goals of the system.
2026-08
Complex Problem Solving
Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions.
2026-08
Plan a small next step
Talk to someone doing this work, look for a supervised activity, and explore the subjects that interest you. Admission, licensing and current program requirements should be confirmed with the relevant institutions.
Source preparation category: Job Zone 3 of 5 · 2026-08. This category describes typical preparation, not your eligibility.
Related study fields
Source crosswalk connections are research leads, not required qualifications.
Heating, Ventilation, Air Conditioning and Refrigeration Engineering Technology/Technician →
Heating, Air Conditioning, Ventilation and Refrigeration Maintenance Technology/Technician →
Explore all related study fields →Source & methodology
O*NET-SOC code 49-9021.00 · Database 31.0 · Retrieved Oct 14, 2026. Dates on individual observations describe their source periods.
How interest exploration matching works →Data: O*NET® 31.0 Database, U.S. Department of Labor, Employment and Training Administration. Used under CC BY 4.0. StudyIndex normalizes the presentation and adds exploration features; USDOL/ETA has not approved, endorsed or tested these additions.