Summary
Overview
Work History
Skills
Certification
KEYWORDS (ATS)
Training
Languages
Timeline
Generic

EDWIN DOMINGUEZ

Perth Amboy,NJ

Summary

HVAC/R technician and U.S. Army Sergeant (91C – Utilities Equipment Repairer) with 4+ years of hands-on experience diagnosing, repairing, and returning to service refrigeration, air conditioning, and heating systems. Strong commissioning mindset: verify sensor health, confirm sequences, document as-found/as-left status, and communicate status to stakeholders. EPA 608 Universal. Comfortable with laptop-assisted diagnostics, multimeters, basic networking (IP addressing), and reading electrical/mechanical schematics. Excels at safety, documentation, and customer training; proven team lead who mentors junior techs and keeps projects on schedule.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Sales Associate

United Supply
05.2025 - Current
  • Supported contractors and facility customers with HVAC equipment selection, ensuring correct condenser/evaporator/coil pairings and compatibility with existing controls.
  • Answered technical questions on airflow/tonnage matching, line set and metering device considerations, and replacement strategies that preserve system performance.
  • Guided customers on control wiring basics (thermostat stages, heat/cool changeover) and common field pitfalls that impact commissioning and warranty outcomes.
  • Maintained up-to-date product knowledge across unitary systems (VAV/FPB/FCU categories, small AHUs) and stocked items to support efficient field installs.
  • Documented recommendations and coordinated orders to align with project schedules and budget constraints.

Sergeant | Utilities Equipment Repairer (91C)

U.S. Army
02.2020 - 02.2025
  • Diagnosed, repaired, and returned to service refrigeration, air conditioning, and heating equipment (environmental control units, split/package systems), restoring mission-critical operation.
  • Performed refrigeration best practices: leak detection, recovery, deep vacuum, proper charging; replaced components (compressors, contactors, capacitors, expansion devices).
  • Verified sensor and control integrity (temperature/pressure sensors, thermostats/safeties), performed point-to-point checks, and confirmed expected control responses.
  • Read and applied electrical/mechanical schematics and technical manuals to isolate faults across mechanical, electrical, and low-voltage control circuits.
  • Executed preventive maintenance programs: filter changes, coil cleaning, belt/fan checks, electrical tightening/inspection, and documentation for compliance and audits.
  • Completed as-found/as-left notes, parts usage, and labor/time records; kept leadership informed on scope, delays, and parts/lead-time risks.
  • Led and mentored junior soldiers on safe work practices, lock-out/tag-out, troubleshooting, and proper documentation to ensure consistent quality.
  • Collaborated with adjacent trades/teams to coordinate repairs and minimize downtime in high-tempo environments.

Skills

  • HVAC/R Diagnostics & Repair: Refrigeration circuits, split systems, package units, environmental control units; leak checks, evacuation/charging, brazing, component replacement (compressors, contactors, expansion devices/ TXVs, relays), airflow and temperature/pressure verification
  • Controls & Commissioning Fundamentals: Sensor/actuator checkout (thermistors, RTDs, pressure switches), point-to-point verification, basic sequences of operation, setpoint/trim checks, trend/alarm setup (concepts), as-built markup and turnover documentation
  • Electrical & Low-Voltage: Read/interpret wiring diagrams and ladder logic; terminate/control wiring; use multimeters and basic test equipment safely
  • Documentation & Compliance: Time sheets, service notes, commissioning forms, as-found/as-left reports; EPA, safety, and environmental compliance
  • Customer Communication & Training: Explain system status, maintenance needs, and basic operator tasks to end users; coordinate with project/service managers
  • Tools & Tech: Multimeter, recovery machine, vacuum pump, gauges, laptop diagnostics; Microsoft Office/Google Workspace; basic networking (IP, subnets)

Certification

  • EPA 608 Universal (Refrigerant Handling)
  • EPA 609 (Motor Vehicle A/C)
  • Type I (Small Appliance) & Type II (High/Very-High Pressure Systems)

KEYWORDS (ATS)

HVAC/R; commissioning; DDC/BAS fundamentals; sensors/actuators; VAV/FPB/FCU; small AHU; CW/HW concepts; sequences of operation; multimeter; schematics; documentation; as-built; trends/alarms (concepts); customer training; EPA 608 Universal; safety compliance.

Training

U.S. Army 91C (Utilities Equipment Repairer) — Fort Lee, VA (2020): Mechanical/electrical diagnostics, refrigeration cycles, HVAC/R repair, safety, and technical documentation.

Languages

Spanish
Native or Bilingual
English
Native or Bilingual

Timeline

Sales Associate

United Supply
05.2025 - Current

Sergeant | Utilities Equipment Repairer (91C)

U.S. Army
02.2020 - 02.2025

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