HVAC/Dehumidification Maintenance Technician

Company: Nammo Defense System
Location: Mesa
Posted on: February 16, 2026

Job Description:

Job Description Job Description 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.

Keywords: Nammo Defense System, Avondale , HVAC/Dehumidification Maintenance Technician, Engineering , Mesa, Arizona