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HVAC Mechanic - Guam Housing (Ace)

Summary/General Description of Job:

The incumbent is responsible for installing, servicing and repairing environmental-control systems in residences, office buildings, and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting and structural layout. The incumbent will be performing service call and preventative maintenance of Military Housing facilities which will require direct communications with Military Housing residents, Government and company quality inspectors.

Essential Duties & Job Functions:

  • Must be able to diagnose system problems and provide necessary repair actions.

  • Employee will be required interact with the residents to determine the root cause of the problem and inform them of the corrective actions being taken.

  • This position utilizes written service orders or individual work orders to identify the type of problem, and location for the required service. The employee is required to complete the service or work order paper work once the work is completed and to turn them into the service desk at the end of the shift. If issues arise during the service the employee will communicate via cell phone to the service desk for further direction.

  • Performs scheduled preventative maintenance actions that are required by this contract.

  • Repairs, overhauls, maintains, and services industrial residential heating, ventilating, and air conditioning systems and refrigeration units. Troubleshoots and locates malfunctions, diagnoses problems, and determines appropriate repairs.

  • Adjusts, repairs, or replaces thermostats, pressure stats, relays, switches, and electrical wiring.
    Repairs or replaces compressors and components, electric motors, fans, belts, and pulleys.

  • Mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications.

  • Fabricates, assembles and installs ductwork and chassis parts, using portable metalworking tools and welding equipment.

  • Installs evaporator unit in chassis or in air-duct system, using hand tools.

  • Services and repairs evaporators, condensers, and receivers. Repacks valves, lubricates moving parts, replaces filters, and cleans coils.

  • Works from blueprints, drawings, models, and/or verbal and written instructions.

  • Repairs components within a system to include transformers, motors, electrodes, solenoids, rheostats, and aqua stats.

  • Maintains refrigerate inventory and consumption logs.

  • This position requires the employee to periodically work swing and weekend shifts on a scheduled basis or to be on-call should a situation arise.

  • Will be scheduled for an on-call status periodically with other technicians to respond to call-outs after normal working hours as needed.

  • Assists other trades and crafts personnel in their daily operations.

  • Follows established safety procedures and utilizes safety protective equipment and clothing pertaining to particular trades or skills.

  • Performs other related duties as assigned.


  • General knowledge of hand and power tools.

  • Ability to perform duties in a timely, accurate and cost-effective manner.

  • Ability to work independently without continuous supervision.

  • Ability to correctly use all safety equipment and clothing provided by management.

  • Ability to maintain valid driver’s license and an acceptable driving record

JOB REQUIREMENTS (Education, Experience & Professional Association):


  • High School diploma or equivalent.

  • Journeyman’s certification

  • Four (4) years’ journey-man level experience as an HVAC technician.

  • Possession of a universal refrigerant card issued by the EPA.

  • Ability to comprehend, speak, read and write Basic English.

  • Possession of a valid driver’s license with an acceptable driving record

  • Formal electrical technician training.

  • Ability to obtain access to U.S. Government Installations through the Defense Biometric Identification System (DBIDS).


  • Sheet metal fabrication experience.

Ace Builders, LLC is an Equal Opportunity Employer.  This position is open to all qualified United States Workers without regard to race, religion, color, national origin, age, sex, and citizenship.

Send resume via email by clicking "Contact Us" or mail to 388 South Marine Corps Drive Ste. 400, Tamuning, Guam  96913. We are an equal opportunity employer.

The Core Tech group of companies is built on teams focused on our core areas of expertise. In every industry, whether it be construction, development, property management, finance, energy, or media, we bring the same dedication to excellence and commitment to success for all stakeholders. Key to this success is our ability to maximize the strength of each of our employees with the integral focus of our company to benefit our community.

Join our team of professionals passionate about making life better.
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