HVAC Mechanic
Class Specification – G.15
HVAC Mechanic – 8185
HVAC Mechanic Lead – 8184
HVAC Asst Supervisor – 8186
October 2026
Series Concept
HVAC Mechanics install, maintain, and repair commercial and domestic refrigeration systems utilizing knowledge of refrigeration theory and computation of leads and capacities. Incumbents install refrigerant piping involving hand soldering, working with sub-zero refrigeration involving two stage and cascade systems; maintain, repair and overhaul air conditioning refrigeration systems of the reciprocating, centrifugal and absorption types, including electrical motors and steam turbines, and their respective controls and safety devises and related equipment such as pumps and cooling towers;
monitor HVAC systems and operations and ensure that routine preventative maintenance is performed according to established schedules; check, repair and/or replace valves, motors controls, switches, gauges, wiring, fans, pumps, compressors, condensers, cores, pipes and other functional components of the system; perform all work in accordance with established safety procedures. May lead or instruct semi-skilled or unskilled assistants.
Class Concept
HVAC Mechanic
Under supervision, HVAC Mechanics perform the full range of duties described in the series concept. Work activity typically encompasses mid- to long-range planning cycles.
HVAC Mechanic Lead
Under supervision, HVAC Mechanics perform the full range of duties described in the series concept. Additionally, they serve as work leaders for HVAC Mechanics and helpers assigned to a specific job; provide instructions to carry out assigned tasks; may make minor adjustments to materials or assigned work in response to material delays or other issues; communicate work order revisions, material delays or other problems to supervisor; and lead the completion of projects.
HVAC Asst Supervisor
Under general supervision, Incumbents serve as working supervisors for a crew of HVAC mechanics and helpers, overseeing shop operations and work assignments across multiple job assignments; assist the supervisor in establishing daily job schedules; ensure that decisions about work priorities are implemented; ensure project completion; assist the supervisor in evaluating job performance and recommend disciplinary actions as necessary.
Qualifications
HVAC Mechanic
Fundamental theoretical and operational knowledge of assigned field. Ability to read, write and perform basic arithmetic calculations. Additional experience requirements may be established locally based on position.
HVAC Mechanic Lead
Theoretical and operational knowledge within a specific field and the ability to apply established practices and concepts. Ability to read, write and perform basic arithmetic calculations. Additional experience requirements may be established locally based on position.
HVAC Asst Supervisor
Comprehensive understanding and knowledge of the principles, concepts, practices, and standards relevant to the area of work. Ability to read, write and perform basic arithmetic calculations. Additional experience requirements may be established locally based on position.