HVAC Machinery Maintenance Mechanic

At Tlingit Haida Tribal Business Corporation (THTBC), your work goes beyond the job description—it becomes part of a purpose-driven legacy. Our continuous commitment to growth directly contributes to the strength, resilience, and future of the communities we serve. Every milestone we achieve helps fund programs, expand services, and create lasting value for the Tribe, making each success a shared one.

For more than 35 years THTBC and its subsidiaries have delivered mission-critical services to federal clients globally. From logistics and information technology to cybersecurity and facilities operations, we are united by a single purpose: to generate meaningful economic opportunity and sustainable growth for the Tlingit Haida Tribes of Alaska.

About The Role

The Heating, Ventilation, and Air-Conditioning (HVAC) Machinery Maintenance Mechanic installs, services, and repairs environmental-control systems utilizing the knowledge of refrigeration theory at the Naval Information Warfare Center. What You'll Be Doing Pipefitting and structural layout. Mounts compressor and condenser units on platform or floor using hand tools.

Follows blueprints or engineering specifications. Fabricates, assembles, and installs ductwork and chassis parts. Uses portable metalworking tools and welding equipment.

Installs evaporator unit in chassis or in air-duct system using hand tools. Cuts and bends tubing to correct length and shape, using cutting and bending equipment and tools. Cuts and threads pipe, using machine threading or hand-threading equipment.

Joins tubing or pipes to various refrigeration units by means of sleeves, couplings or unions, and solder joints using a torch. Forms complete circuit for refrigerant, installs expansion and discharge valves in circuit. Connects motors, compressor, temperature controls, humidity controls, and circulating ventilation fans to control panels and connects control panels to power source.

Installs air and water filters in completed installation. Injects small amounts of refrigerant into compressor to test systems and adds Freon gas to build up prescribed operating pressure. Observes pressure and vacuum gauges and adjust controls to ensure proper operation.

Test joints and connections for gas leaks using gauges or soap- and-water solution. Wraps pipe in insulation batting and secures them in place with cement or wire bands. Replaces defective breaker controls, thermostat, switches, fuses and electrical wiring to repair installed units.

May install, repair and service air conditioners, ranging from fifteen to twenty (20) tons cooling capacity in warehouse and small factory buildings. Performs minor painting chores consistent with preventive maintenance functions and minor repairs. Performs minor preventive maintenance functions which include but are not limited to: Changing filters; cleaning cooling towers, heating and cooling coils; cleaning floor drains, grease traps, roof gutters, downspouts; and changing fluorescent tubes and other light bulbs where needed.

Has responsibility of being available on twenty-four (24) hour call to facilitate emergency repairs to equipment that is critical to operations. Adhere to company policies, procedures, and safety regulations. Performs other duties as assigned.

What We'Re Looking For

Must be able to obtain an Interim Secret Clearance prior to start. Must be able to obtain and maintain a Secret Clearance. Must be Universal CFC certified.

Must have a thorough knowledge of EMS, to make operational changes to remote HVAC equipment throughout the facilities.