HVAC Mechanic AA

Job Description


Minimum Qualifications:

Graduation from high school or possession of a high school equivalency certificate and satisfactory completion of an acceptable vocational school and/or training program in basic heating, air conditioning repairs or related field.

Considerable knowledge of and have performed satisfactorily the duties of a HVAC of refrigeration repair mechanic, or related field for a period of not less than six (6) years.


Possession of a valid motor vehicle operator's license issued from jurisdiction of residence . A safe driving record with no more than four (4) points accumulated over the past three (3) years.

Possession of valid Journeyman or Master Refrigeration/HVAC license from jurisdiction of residence, or a Masters License from the District of Columbia.

Possession of  an EPA/C PC Certificate, Type 1.11.111. (Universal)

Medical Group:

Ability to complete satisfactorily the medical examination for this job. The employee must be able to perform the essential functions of this job either with or without reasonable accommodation(s) .

Ability  to  perform  strenuous  physical  tasks  including frequent  lifting  of  objects weighing up to 50 lbs. and occasionally to 75 lbs.

Ability to distinguish basic colors for component, wiring and safety identification.

Job Summary/Duties:

This is technical HVAC/Refrigeration related equipment maintenance and service work. The incumbent is responsible for inspection, maintenance, installation and repair of commercial and industrial type air condit ioning, refrigeration and heating systems. This includes split systems, package, window units, heat pumps, gas heaters, electrical heaters and related ventilation systems located in the Authority facilities. Operates and performs maintenance on HVAC related equipment and systems in accordance with local codes, operations manuals and manufactures' instructions . The work requires an understanding of maintenance procedures and practices, HVAC and refrigeration theory, and the materials, parts, tools, test equipment and operating systems associated with WMATA's heating, ventilation and air conditioning systems.

Installs various types of air conditioning/heating and refrigeration units in accordance with local codes, manufacturers' recommendations and standard specifications to include charging the system, performing installation start-up and checking operation procedures.

Diagnoses equipment failures and performs necessary repairs by making appropriate adjustments to the system and/or replacing malfunctioning components.

Performs repairs, inspections, required adjustments, testing,troubleshooting, cleaning, lubrication, and scheduled maintenance on assigned HVAC and refrigeration systems, subsystems  and components  in accordance  with schematics,  wiring and flow diagrams, standard operating procedures, operation manuals, manufacturers' specifications, maintenance instructions, and local and federal EPA standards.

Performs preventive, scheduled, unscheduled or corrective maintenance, troubleshooting and tests on all HVAC/Refrigeration systems, subsystems and components using measuring equipment such as multi meters to test defective electrical equipment; flow meters, pressure gauges, leak detectors, vacuum pumps, pneumatic control testers and air velocity indicators for HVAC testing; and other instruments and tools as required. Operates spec ial shop equipment (drill, grinders, fork trucks, hoists and cranes).

Maintains HVAC, air conditioning and refrigeration systems by performing scheduled maintenance inspections and test; removing, replacing, or repairing defective or worn parts; lubricating and cleaning or recharging equipment; leak detection tests; soldering or brazing tubing and piping; installing and replacing filters, metering devices and solenoids; and adjusting or calibrating pneumatic equipment to manufacturers' specifications using approved procedures and test equipment.

Maintains HVAC electrical components ( circuits, wiring, starters, relays and motors) by performing maintenance inspections and test; removing, replacing and repairing defective or worn parts; cleaning and lubricating components as needed. Calibrates and adjusts electrical control devices such as thermostats, humidistats, modulating, valves, relays and controllers.

Completes reports and documentation of scheduled preventive maintenance and repair activities. Prepare parts requisitions for supervisor's  approval.

Attends on-the-job and  formal training classes; assists mechanics in higher classifications in their assignments or provides job specific training to mechanics in lower classifications.

Responds to and provides assistance in emergencies such as securing or safeguarding HVAC equipment, fire/life/safety, snow emergencies, etc.

Performs all tasks and assignments within the established safety practices and maintenance guidelines.

May work from ladders, scaffolding and other high rise equipment. May operate Authority vehicles between work locations.

Provides personal hand tools that are necessary to perform the duties of the position. Works variable shifts, days and hours as required and as provided for under existing union contract.

Performs all other related duties as required.

Employees are assigned complex HVAC operation and maintenance work in WMATA facilities. Employees are expected to carry assignments through completion independently. Existing rules, regulations and procedures govern the work but employees use considerable judgement in interpreting and applying them to unusual or nonstandard situations. Employees frequently refine and develop their work routines. Work is reviewed in general terms through spot checks and occasional checking of results by a Supervisor, Craft Crew.

Evaluation Criteria:

Consideration will be given to applicants whose resumes demonstrate the required education and experience. Applicants should include all relevant education and work experience.

Evaluation criteria may include one or more of the following:

  • Personal Interview
  • Skills Assessments
  • Verification of education and experience
  • Criminal Background Check
  • Credit history report for positions with fiduciary responsibilities
  • Successful completion of a medical examination including a drug and alcohol screening
  • Review of a current Motor Vehicle Report


Washington Metropolitan Area Transit Authority, a Federal contractor, is an Equal Opportunity / Affirmative Action employer.  All qualified applicants receive consideration for employment without regard to race, color, creed, religion, national origin, sex, gender, gender identity, age, sexual orientation, genetic information, physical or mental disability, or status as a protected veteran, or any other status protected by applicable federal law, except where a bona fide occupational qualification exists.  Our hiring process is designed to be accessible and free from discrimination.

This posting is an announcement of a vacant position under recruitment.  It is not intended to replace the official job description.  Job Descriptions are available upon confirmation of an interview.

Similar jobs