HVAC Refrigeration Equipment Mechanic AA

HVAC Refrigeration Equipment Mechanic

The HVAC Refrigeration Equipment Mechanic is responsible for technical HVAC/Refrigeration related equipment maintenance and service work. The incumbent is responsible for inspecting, maintaining, installing and repairing commercial and industrial type air conditioning, refrigeration and heating systems in accordance with local codes, operations manuals and manufacturers' instructions. This includes split systems, packages, window units, heat pumps, gas heaters, electrical heaters and related ventilation systems located in the Authority facilities.

Principal Job Duties

• 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 Environmental Protection Agency (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, flow meters, pressure gauges, leak detectors, vacuum pumps, pneumatic control testers, air velocity indicators, and other instruments. and tools as required.
• Operates special shop equipment(drill, grinders, fork trucks, hoists and cranes). Maintains 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; performing 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, to assure that various are adequately maintained and in operational condition.
• Completes the required forms, tags, and other documentation that describe maintenance work. Enters data into the Authority maintenance database and prepares parts requisitions for the supervisor's approval, in order to maintain the integrity of WMATA's equipment and assure compliance with local and federal documentation standards.

Other Duties

N/A

Safety Sensitive

• Maintains and promotes awareness and accountability with safety policies and procedures while performing job functions. Promotes a positive safety culture and encourages reporting of safety concerns consistent with our Agency Safety Plan, other regulatory requirements within the Safety Management System and just culture principles.

The functions listed are not intended to limit specific duties and responsibilities of any particular position. Nor is it intended to limit in any way the right of managers and supervisors to assign, direct and control the work of employees under their supervision.

Knowledge

• Knowledge of industry best practices for HVAC system maintenance
• 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

Skills

• Good communication and interactive skills to engage courteously and effectively with supervisor, co-workers, patrons and other internal customers
• Skilled in selecting and using correct HVAC/Refrigeration tools, test equipment and parts; interpreting test results to perform maintenance
• Skilled at interpreting HVAC and refrigeration symbols and reading and using schematics and wiring diagrams, refrigeration flow diagrams, operations manuals, manufacturer's manuals and maintenance instructions

Abilities

• Ability to evaluate conditions, and make independent decisions based on advanced knowledge of heating, air conditioning and refrigeration theories and principles as they relate to plant operations
• Ability to work from ladders, scaffolding and other high-rise equipment
• Ability to work in a team environment, receive supervision, and complete assignments in a timely and accurate manner
• Ability to identify and apply basic facts and principles of the Authority's operating, maintenance and safety rules, regulations and procedures
• Ability to shovel snow and operate snow removal equipment
• Ability to work variable shifts, days and nights as required

Machine, Tools, Equipment, Software, Hardware Required

• Multimeter
• Manifold gauges
• Vacuum pump
• Refrigerant recovery system
• Welding/brazing tanks

Supervisory Responsibility

Not responsible for supervising others.

Minimum Education

• High School Diploma or possession of a General Equivalency Certificate (GED) and
• Satisfactory completion of an accredited vocational school and/or training program in basic heating, air conditioning repairs (on-the-job mechanical training is acceptable)

Minimum Experience

• A minimum of six (6) years of experience satisfactorily performing the duties of a HVAC/REF- Equipment Mechanic or performing the duties of a HVAC/REF-EQMT-Mechanic A for one (1) year

Minimum Certification/Licensure

• Must possess a valid Journeyman or Master HVAC/Refrigeration license from Maryland, District of Columbia or Virginia
• Environmental Protection Agency (EPA) Universal CFC (Chlorofluorocarbons) Certification, Type 1.11.111
• A valid driver's license

About Us

The Washington Metropolitan Area Transit Authority (WMATA), known as Metro, is the region's leading public transportation provider. Serving a 2,054-square-mile jurisdiction, Metro operates six rail lines, 98 stations, 126 bus routes, and Metro Access, a shared-ride paratransit service. As one of the nation's busiest transit systems, Metro connects communities, supports economic growth, and provides safe, reliable transportation.

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:

• Skills and/or behavioral assessment
• Personal interview
• Verification of education and experience (including certifications and licenses)
• Criminal Background Check (a criminal conviction is not an automatic bar to employment)
• Medical examination including a drug and alcohol screening (for safety sensitive positions)
• Review of a current motor vehicle report

WMATA is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other status protected by applicable federal law.

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.

Job Info

• Job Identification 209
• Job Category Transportation Operations
• Posting Date 08/19/2026, 05:21 PM
• Apply Before 09/12/2026, 03:00 AM
• Job Schedule Full time
• Locations 5801 Sunnyside Avenue, College Park, MD, 20740, US (On-site)

Washington Metropolitan Area Transit Authority