HVAC Maintenance Technician

Nammo Defense Systems, Inc
Mesa, AZ

JOB OVERVIEW:
Part of a team responsible for repair and maintenance of 450 air conditioning units consisting of heat pumps, chilled water systems, DX dehumidifiers and desiccant wheel dehumidifiers. Will respond to corrective and preventative maintenance duties as well as assist in new installations and commissioning.

KEY RESPONSIBILITIES:

• Charges and recovers refrigerant from air conditioning and refrigeration equipment following all EPA regulations.
• Installs, services, modifies, and repairs numerous types of air conditioning, refrigeration, dehumidification, heating, and air handling equipment.
• Designs and installs piping systems for PVC, copper and steel which require sizing, cutting, gluing, threading, brazing, and silver soldering.
• Installs, troubleshoots, and repairs electric power and control circuits. Installs conduit and runs wiring to equipment.
• Monitors performance of HVAC and dehumidification equipment using electronic diagnostic equipment and compares to equipment specifications to determine if repairs or adjustments are required.
• Moves machinery and equipment using hoists, dollies, rollers, and trucks.
• Performs routine inspection and preventative maintenance; performs corrective maintenance.
• Uses hand tools, power drills, grinders, and other metalworking tools to repair and replace parts.
• Initiates purchase requisitions for service parts and replacement HVAC equipment.

SKILLS & QUALIFICATIONS:
Required:

• High School or General Education Diploma (GED). 5+ years of related experience.
• Universal Refrigerant Handling Certificate.
• Knowledge of heating and theory and application; knowledge of heating and electronics; skill in silver soldering.
• Experience with industrial desiccant wheel process dehumidification equipment is a plus.
• Experience with industrial water chiller equipment is a plus.
• Ability to read, analyze and interpret general business periodicals, professional journals, technical procedures, or governmental regulations.
• Ability to write reports, business correspondence and procedure manuals.
• Ability to effectively present information and respond to questions from managers, customers, and employees.
• Ability to obtain ATF Processor license.
• Must have a clean Arizona driving record.

COMPETENCIES:
• Excellent communication and collaboration skills
• Strong problem-solving and critical-thinking abilities
• Ability to work in fast-paced environments
• Leadership or teamwork abilities


WORKING CONDITIONS
:
• Full-time on-site position
• This position may require travel on an as-needed basis
• This position may require working in diverse settings and conditions

**Note**: Due to US Export Control laws and regulations; applicants selected for employment must show proof of a U.S. Person status before employment may begin.
Posted 2025-11-11

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