O*NET-SOC 49-9021.00

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.

Preparation

ItemValue
Preparation zoneZone 3 – Medium preparation needed
What O*NET says the zone requiresPrevious work-related skill, knowledge, or experience is required
Broad occupation in O*NETTrue (Yes)
Skills listed for this occupation6
Abilities listed for this occupation6
Tasks listed for this occupation5
Interest scores given for this occupation6

Skills

The 6 skills with the highest importance values in this occupation's records.

SkillO*NET elementImportanceDate
Operations Monitoring2.B.3.g3.6208/2022
Critical Thinking2.A.2.a3.508/2022
Troubleshooting2.B.3.k3.508/2022
Installation2.B.3.d3.3808/2022
Reading Comprehension2.A.1.a3.3808/2022
Repairing2.B.3.l3.3808/2022

The importance value is what each record itself carries on O*NET's importance scale; the date is the date in each record.

Abilities

The 6 abilities with the highest importance values in this occupation's records.

AbilityO*NET elementImportanceDate
Near Vision1.A.4.a.13.8808/2022
Problem Sensitivity1.A.1.b.33.8808/2022
Deductive Reasoning1.A.1.b.43.7508/2022
Arm-Hand Steadiness1.A.2.a.13.6208/2022
Finger Dexterity1.A.2.a.33.6208/2022
Oral Comprehension1.A.1.a.13.6208/2022

The importance value is what each record itself carries on O*NET's importance scale; the date is the date in each record.

Tasks

The tasks O*NET records for this occupation, with the type, respondent count and date each record carries.

TaskTypeIncumbents respondingDate
Test electrical circuits or components for continuity, using electrical test equipment.Core5608/2022
Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.Core5208/2022
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.Core5208/2022
Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.Core5208/2022
Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.Core5108/2022

Work interests

The interest scores O*NET gives this occupation, on the six interest types.

InterestScoreDate
Realistic6.9211/2023
Conventional4.4811/2023
Investigative2.7411/2023
Social1.511/2023
Enterprising1.3511/2023
Artistic1.011/2023

More occupations in preparation zone 3

Source: O*NET 29.1 Database (Occupation Data, Job Zones, Skills, Abilities, Task Statements, Interests), U.S. Department of Labor, Employment and Training Administration. Data fetched 2026-10-31. See about and sources.