David Gilliam
Oak Hill,WV
Summary
Dedicated HVAC Technician known for strong troubleshooting and safety adherence. Successfully maintained over 300+ commercial HVAC sites while implementing preventative maintenance practices that prolong equipment life and minimize costly repairs.
Overview
9
9
years of professional experience
Work History
HVAC Technician
Comm Source Servies
Fayetteville, WV
06.2022 - 07.2026
- Maintained over 300+ commercial HVAC sites for AT&T across WV, VA, KY, MD, OH, and PA, performing annual preventative maintenance and repairs independently
- Managerial tasks included sourcing and ordering parts for field techs, creating schedules for field techs that aligned with current priorities, helping techs troubleshoot over the phone or video calls, creating and assigning work orders, as well as ensuring to follow budgets, and providing clear communication from the field techs to other members of management
- Performed Preventative Maintenance on every unit at every site.
- Diagnosed and repaired most any component on wall mounted HVAC systems, ranging from capacitors to compressors and everything in between.
- Utilized computer systems to submit work orders and order parts, streamlining maintenance processes and reducing downtime
- Troubleshot complex HVAC problems, identifying root causes and implementing effective solutions.
- Utilized diagnostic equipment effectively in order to identify malfunctioning components within HVAC systems accurately.
- Conducted maintenance service on HVAC systems to increase life expectancy of equipment and prevent costly repair work.
- Repaired and replaced motors, bearings and belts.
- Performed comprehensive preventative maintenance on various types of HVAC equipment, prolonging their lifespan.
- Worked overtime, holidays and weekends to accommodate company needs.
- Investigated major malfunctions and breakdowns of heating and air-conditioning systems and used troubleshooting to determine causes.
- Improved system efficiency by conducting thorough HVAC equipment inspections and maintenance.
- Contributed to a safer work environment by adhering to industry safety standards and regulations during all tasks performed.
- Filled out detailed work orders for each job completed.
- Traveled to job sites for both scheduled and emergency appointments.
- Provided emergency response services for critical system failures, minimizing downtime impacts on businesses or homeowners.
- Recommended appropriate upgrades to clients'' existing systems, resulting in increased energy efficiency and cost savings.
- Inspected and tested refrigeration systems, safety devices and controls to determine proper functionality.
- Read blueprints, wiring diagrams, piping schemes and engineering specifications to diagnose and repair units.
- Kept accurate records of time and materials used for each job to compile into service reports.
- Routinely calibrated thermostats for accurate temperature control settings that maintained comfortable environments in clients' properties.
- Participated in team meetings to discuss project progress, challenges encountered, and strategies for overcoming any obstacles.
- Closed out work orders after verifying completion with customers and reporting discrepancies discovered on job site.
HVAC Technician
WV Army National Guard
Fayetteville, WV
10.2021 - 10.2023
- Oversaw complex deployments, ensuring compliance with technical specifications and safety regulations.
- Implemented preventative maintenance schedules, improving system reliability and longevity.
- Developed standard operating procedures for HVAC maintenance practices within the unit.
- Trained junior technicians on HVAC equipment operation and troubleshooting techniques.
- I was recognized in front of entire unit by the second highest ranking General in WV for restoring power during a field exercise and therefore allowing operations to continue.
- I was put in charge of 5-10 soldiers for working parties and or anything that was priority and needed taken care of.
HVAC Technician
United States Marine Corps
Jacksonville, NC
10.2017 - 10.2021
- Diagnosed and repaired heating and cooling systems, reducing downtime for operational readiness.
- Conducted routine maintenance and inspections to ensure optimal system performance.
- Installed HVAC systems in accordance with military standards and safety protocols.
- Collaborated with team members to enhance HVAC workflow efficiency and service delivery.
- Trained junior Marine technicians on HVAC equipment operation and troubleshooting techniques.
- Performed troubleshooting on HVAC systems to determine root cause of issues.
- Achieved EPA certification as HVAC technician, servicing individual ECUs and large field refrigeration systems for USMC assets
Led troubleshooting and repair operations on all USMC HVAC systems, ensuring operational readiness across multiple deployments - Completed 4 years of daily preventative maintenance, service, and major component replacements, including fan motors, to maximize equipment lifespan
- Supervised field operations as lead technician for 3.5 years, coordinating teams during deployments and training exercises
- Utilized computer systems to submit work orders and order parts, streamlining maintenance processes and reducing downtime
Education
EPA Type 1 And 2 -
United States Marine Corps School of Engineering
Courthouse Bay, NC08.2018
High School Diploma -
Fayetteville High School
Fayetteville, WV05.2017
Skills
- Technical repair
- HVAC controls
- Air conditioning
- Cooling systems maintenance
- Leak checks
- Technical troubleshooting
- System troubleshooting
- Soldering
- Electrical wiring
- Maintenance scheduling
- Dedicated team player
- Quality-focused
Timeline
HVAC Technician
Comm Source Servies
06.2022 - 07.2026
HVAC Technician
WV Army National Guard
10.2021 - 10.2023
HVAC Technician
United States Marine Corps
10.2017 - 10.2021
EPA Type 1 And 2 -
United States Marine Corps School of Engineering
High School Diploma -
Fayetteville High School