mos.directory

Marine Corps MOS · Engineering

1164 Utilities Systems Technician

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

Browse Marine Corps

Overview

Utilities Systems Technicians install and operate field refrigeration and environmental control units and perform organizational and intermediate repairs using electrical, electronic, and refrigeration principles. They repair electric motors, electronic modules, motor control circuits, power generation equipment, refrigeration equipment, environmental control units, and engineer equipment electrical systems, and they handle and recover HCFCs and CFCs under EPA certification.

Minimum ASVAB: EL 100 or MM 105

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: navmc-1200-1l-fy26 (source date 2025-03). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Core Skills

  • Electric motor and control circuit repair
  • Electronic module and power generation repair
  • Field refrigeration installation and repair
  • Environmental control unit installation and operation

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Repairing field refrigeration equipment and installing and operating environmental control units transfers directly to civilian cooling-system service.

How to prepare: Ask a civilian HVAC training provider to assess your refrigeration and electrical repair experience for placement into hands-on training. For covered refrigerant work, verify or obtain equipment-type-specific EPA certification unless working as an apprentice closely and continually supervised by a certified technician; separate state or local technician licensing may also apply.

What the civilian work involves
  • Test electrical circuits or components for continuity, using electrical test equipment.
  • Study blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components.
  • Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.

Electric Motor, Power Tool, and Related Repairers

Military repairs on electric motors, motor control circuits, and power generation equipment closely match civilian motor and generator repair work.

How to prepare: Arrange supervised practice in a motor repair shop to demonstrate fault diagnosis and reassembly to specified ratings.

What the civilian work involves
  • Inspect and test equipment to locate damage or worn parts and diagnose malfunctions, or read work orders or schematic drawings to determine required repairs.
  • Reassemble repaired electric motors to specified requirements and ratings, using hand tools and electrical meters.
  • Measure velocity, horsepower, revolutions per minute (rpm), amperage, circuitry, and voltage of units or parts to diagnose problems, using ammeters, voltmeters, wattmeters, and other testing devices.

Electrical and Electronics Repairers, Commercial and Industrial Equipment

Repairing electronic modules, motor control circuits, and engineer-equipment electrical systems provides directly relevant experience for industrial electrical and electronic equipment repair.

How to prepare: Complete a hands-on industrial equipment troubleshooting course that includes fault testing and maintenance-log documentation.

What the civilian work involves
  • Test faulty equipment to diagnose malfunctions, using test equipment or software, and applying knowledge of the functional operation of electronic units and systems.
  • Maintain equipment logs that record performance problems, repairs, calibrations, or tests.
  • Inspect components of industrial equipment for accurate assembly and installation or for defects, such as loose connections or frayed wires.
Civilian tools and software (examples)
  • Circuit evaluation software
  • Computerized maintenance management system CMMS

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • Associate Electronics Technician (CETa)

    Document foundational circuit, electrical theory, and test-equipment knowledge for industrial electronics repair; ETA designs this credential for technicians with less than two years of electronics experience or training.

    Eligibility and preparation: Pass the CETa examination with a score of at least 75%; the hands-on component is optional.

    For: Electrical and Electronics Repairers, Commercial and Industrial Equipment

Notes & Sources

Evidence for this guidance (7 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 1164

    [1] MOS 1164 section "a. Summary"; cached text line 32830; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Electric motor and control circuit repair, Electronic module and power generation repair, Field refrigeration installation and repair, Environmental control unit installation and operation, Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00), Electric Motor, Power Tool, and Related Repairers (O*NET 49-2092.00), Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

  2. O*NET: Heating, Air Conditioning, and Refrigeration Mechanics and Installers

    [2] O*NET 30.3 occupational data

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  3. US EPA: Section 608 Technician Certification Requirements

    [3] Requirements and Types of Certifications; updated July 15, 2026

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  4. Bureau of Labor Statistics: Heating, Air Conditioning, and Refrigeration Mechanics and Installers

    [4] How to Become; Education and Training; Licenses, Certifications, and Registrations; updated August 27, 2026

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  5. O*NET: Electric Motor, Power Tool, and Related Repairers

    [5] O*NET 30.3 occupational data

    Supports: Electric Motor, Power Tool, and Related Repairers (O*NET 49-2092.00)

  6. O*NET: Electrical and Electronics Repairers, Commercial and Industrial Equipment

    [6] O*NET 30.3 occupational data

    Supports: Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

  7. COOL credential mapping: Associate Electronics Technician (CETa)

    [7] 1164 cached COOL credential feed

    Supports: Associate Electronics Technician (CETa)

    [8]ETA International: Associate Certified Electronics Technician · CETa description and CETa Exam Info; retrieved 2026-09-23

    Supports: Associate Electronics Technician (CETa)

Defense contractor jobs for 1164

Predecessor codes

Historical codes with documented links to 1164. Each history page explains the change.

1142Engineer Equipment Electrical System Technician1161Refrigeration and Air Conditioning Technician

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

Report an error on this page