HVAC Mechanic I

Amentum, a global leader in advanced engineering, technical, and professional services serving the US government, allies and critical infrastructure sectors, is seeking an HVAC Mechanic I to support a government contract based at Mayport in Jacksonville, Florida. POSITION SUMMARY Performs duties described in the Service Contract Act Service Order HEATING, REFRIGERATION, AND AIR-CONDITIONING MECHANIC. May perform duties of other classifications that have a pay rate equal to or lower than the employee's current rate. Essential Functions: + Installs, services, and repairs environmental-control systems in residences, department stores, office buildings, and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting and structural layout. + Mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications. + Fabricates, assembles, and installs ductwork and chassis or in air duct system, using hand tools. + Cuts and bends tubing to correct length and shape using machine-threading or hand-threading equipment. + Joins tubing or pipes to various refrigerating units by means of sleeves, couplings or unions, and solder joints, using torch, forming complete circuit for refrigerant. + Installs expansion and discharge valves in circuit. + Connects motors, compressors, 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 amount of refrigerant into compressor to test systems and adds freon gas to build up prescribed operating pressure. + Observes pressure and vacuum gauges and adjusts controls to insure proper operation. + Tests joints and connections for gas leaks, using gauges or soap-and-water solution. + Wraps pipes in insulation batting and secures them in place with cement or wire bands. + Replaces defective breaker controls, thermostats, switches, fuses, and electrical wiring to repair installed units, using electrician's hand tools and test equipment. Marginal Functions: + Performs other duties as requested. + May install, repair and service air conditioners, ranging from fifteen to twenty tons cooling capacity, in warehouses and small factory buildings. Qualifications/Education/Experience: + High school or equivalent Certificate, License, Registration, etc.: + Valid Driver's License + Journeyman HVAC Mechanic

Created: 2026-02-23