(1) Under general supervision, functions as a working supervisor of a
team of three or more HVAC Mechanics and has total responsibility for
the complete maintenance, proper operation, service and repair of a
wide variety of large, complex commercial and industrial heating,
ventilation and air conditioning (HVAC) systems, including large
regional heating and cooling facilities up to 4,000 tons. This
typically includes reciprocating, screw, centrifugal and absorption
chiller plants and complex pneumatic and/or electronic environmental
control systems and encompasses air and water balance requirements and
completion of plumbing, low pressure steam and electrical tasks
associated with HVAC operations. (2) Non-supervisory option: Performs
the work outlined above in a non-supervisory role, as an expert senior
mechanic. May be responsible for leading less skilled HVAC mechanics
and skilled crafts people.
1. Organizes, assigns, and coordinates the technical maintenance
work and installation services rendered by HVAC Mechanics and
other skilled, semi-skilled, and unskilled workers.
2. (2) Non-supervisory option: Performs the work as a senior
mechanic with a level of expertise higher than that of an HVAC
3. Performs all the duties of HVAC Mechanic III.
4. Supervises and trains skilled and unskilled workers assigned to
projects; assigns specific tasks to workers; evaluates results;
participates in performance evaluations and recommends areas for
individual training and development.
5. Inspects completed job assignments for adherence to trade
6. Prepares estimates of time, labor and materials to be used on
assigned tasks. Compares cost of completed jobs with original
7. Prepares specifications for the requisition of equipment, tools,
parts, and supplies. Inspects these items on receipt for
adherence to specifications.
8. Prepares a variety of special and recurring reports reflecting
daily operations and project status.
9. Operates standard equipment including power and hand tools.
10. Ensures operational readiness and safety of work areas, tools,
and equipment; conducts routine inspections; performs routine
repairs and maintenance on equipment and tools.
11. Assists higher level supervisors in administrative tasks such as
scheduling, occupational safety, security, and other workplace
Note: The intent of this list of primary duties is to provide a
representative summary of the major duties and responsibilities of
this job. Incumbents perform other related duties assigned. Specific
duties and responsibilities may vary based upon departmental needs.
EDUCATION: High School Diploma or GED
EXPERIENCE:Ten years progressively responsible experience in any
combination of air conditioning, refrigeration, temperature control,
steamfitting, stationary engineering, plumbing or heating trades. Two
years of this experience must have included the supervision of journey
level mechanics in these trades. (2) Non-supervisory option:
Supervisory experience not required.
Comprehensive knowledge of the principles of air conditioning and
refrigeration; of the practices and techniques used in the
installation, repair and maintenance of HVAC equipment and systems; of
refrigerant types, environmental impact, and gas reclamation
procedures and equipment. Thorough knowledge of OSHA regulations
related to the refrigeration trade; of National Electric Code; of
basic mathematics including area, volume, and weights and the
practical application of fractions, percentages, ratios, and
proportions. Thorough knowledge of plumbing, steamfitting, and the
electrical trades as they pertain to HVAC systems. Skill in the
installation, repair and maintenance of commercial or industrial HVAC
equipment and systems; in the use and maintenance of tools and
equipment of the trade; in welding, brazing, soldering, and silfoss;
in reading and interpreting blueprints, schematics, drawings,
specifications, and contract documents; in the use of dial indicators,
vernier calipers, and depth micrometers; in using computers to
diagnose HVAC system problems. Ability to read and explain
manufacturer recommendations regarding scheduled and preventive
maintenance, servicing and operation; to prepare written reports; to
communicate effectively both orally and in writing; to supervise and
train HVAC Mechanics and other maintenance personnel in the HVAC
trade; to program computers for HVAC system operations; to estimate
costs of installing HVAC systems up to 100 tons; to work in, on,
around, over and under fixed equipment and machinery; to work at
heights up to 35 feet; to manipulate heavy equipment, tools and
supplies and/or exert force up to 50 lbs.; to concurrently manipulate
multiple controls on machinery and equipment; to work in hazardous or
irritating environments, confined spaces, and adverse weather or
temperature conditions; to wear and work in personal protective
OTHER:Except for qualifications established by law, additional
related experience and formal education in which one has gained the
knowledge, skills, and abilities required for full performance of the
work of the job class may be substituted for the education or
experience requirement on a year-for-year basis with 30 college
credits being equivalent to one year of experience.
CONDITIONS OF EMPLOYMENT
Candidates selected for employment may be subject to medical inquiries
and/or medical examinations to determine ability to perform the job.
Employees assigned to work with CFC refrigerants must maintain valid
certification (Universal level) in accordance with federal law. Valid
Maryland Non-commercial Class C or equivalent driver's license may be
required. Candidates selected for employment may be required to be
trained to work with asbestos.