This is skilled craftwork in the installation, operation, maintenance, overhaul, and repair of air conditioning, refrigeration, and heating systems.   The work requires knowledge of techniques, methods, and procedures used in installing, operating, maintaining, overhauling, and repairing air conditioning, refrigeration and heating systems which is learned through training and job experience.  Contacts require courtesy, tact, and skills in dealing with others.  The work is standardized in that tasks are covered by diversified procedures and specialized standards, and, because of the changing priorities or different situations, incumbents may vary the sequence of tasks and consider the most appropriate procedures to follow.  The work is patterned involving similar situations and generally requiring only the choice of the correct procedure. The work is performed indoors and outdoors where there are some risks and hazards, but they are controllable.  Operates power, mechanical and hand tools and motor vehicles.  The physical demands consist of walking, standing, sitting, bending, climbing ladders to work in high elevated spaces, crawling under equipment and moving or lifting equipment and tools, such as fan motors, compressors and various types of components weighing more than 50 pounds, and include exposure to dust, dirt, and other unpleasant conditions.    May be assigned to work shift hours.  The work is performed under general supervision where the work assignments are varied and subject to practices and procedures, but the worker is permitted latitude to set priorities subject to superior's approval.

• Installs, operates, maintains, overhauls, and repairs air conditioning, refrigeration, and heating systems.
• Diagnoses system-operating conditions using central control or energy management panel.
• Maintains and repairs automatic control circuitry relays and drive equipment.
• Maintains chemical balance in air conditioning water systems through testing and water treatment.
• Monitors air conditioning and heating systems.
• Performs major overhaul of air conditioning, refrigeration, and heating systems.
• Repairs, recalibrates, and maintains electronic controls of energy management systems.
• Performs electrical, plumbing, and construction duties related to air conditioning maintenance, repair, and installation.
• Inspects, repairs, and lubricates fans, motors, pumps, and ductwork.
• Inspects air-handling units.
• Demonstrates proficiency in the City of Jacksonville’s competencies.
• Performs related work as required.

• Knowledge of the techniques, methods, and procedures used in the installation, maintenance, overhaul, and repair of air conditioning, refrigeration, and heating equipment.
• Knowledge of the equipment, tools, and materials used in the operation and maintenance of air conditioning, refrigeration, and heating equipment.
• Knowledge of liquid petroleum and natural gas systems.
• Knowledge of occupational hazards and safety precautions.
• Skill in the care and use of air conditioning and heating systems tools and equipment.
• Ability to read and interpret blueprints and schematics.
• Ability to perform preventative maintenance of air conditioning, refrigeration, and heating system.
• Ability to operate computerized control panels.
• Ability to use various electrical testing equipment.
• Ability to operate power, mechanical and hand tools.
• Ability to read, comprehend, and apply written materials including equipment, instruction, and safety manuals.
• Ability to communicate effectively both verbally and in writing.
• Ability to operate a motor vehicle.

OPEN REQUIREMENTS:  Four years of education and/or experience involving the operation and maintenance of air conditioning and heating systems.  During the probationary period, must pass a competency examination on liquid petroleum gas equipment conducted by the State Division of Liquid Petroleum Gas Division.

OTHER REQUIREMENTS:  The probationary period for this class is six months. This classification performs safety-sensitive functions and is subject to pre-employment, random and other drug/alcohol testing programs as set forth in the City of Jacksonville’s Drug Free Workplace Policy (0401). 

LICENSING/CERTIFICATION/REGISTRATION: Must possess a current valid certificate of competency as a Journeyman Class "A" HAR Mechanic license or comparable State of Florida license, and it must be maintained during employment in this class.  Must possess and maintain a valid driver’s license during employment in this class.  Must qualify for, obtain, and maintain a City of Jacksonville public driver certification for employment in this class. 

The City of Jacksonville is an Equal Opportunity/Equal Access Employer and will provide equal opportunity to all employees and applicants in compliance with all applicable federal and state employment laws and the current interpretation of employment discrimination by the United States Equal Employment Opportunity Commission, as set forth in Directive 0528.  There shall be no discrimination or harassment against any person with regard to race, color, sex (including pregnancy), sexual orientation, gender identity or expression, religion, political affiliation, national origin, disability, age, marital status, veteran status, or any other impermissible factor in recruitment, hiring, compensation, training, placement, promotion, discipline, demotion, transfers, layoff, recall, termination, working conditions and related terms and conditions of employment.