Ronnie Bernal Diaz
Alexandria,VA
Summary
HVAC Service Technician, EPA-certified. 4+ years of experience in heating, air conditioning and refrigerant systems, as well as electrical and mechanical controls. Ambitious with strong background in HVAC, refrigeration machinery operations, Expert at HVAC repairs and maintenance. Excellent understanding of HVAC controls. Experienced following OSHA/refrigeration guidelines.
Overview
4
4
years of professional experience
Work History
HVAC Technician
United Air Temp
Alexandria, VA
03.2024 - Current
- Diagnosed heating and cooling issues for United Air Temp service calls.
- Repaired HVAC components, wiring, and thermostat controls on residential systems.
- Installed replacement parts using hand tools, gauges, and testing equipment.
- Performed preventive maintenance on furnaces, air conditioners, and heat pumps.
- Followed safety procedures while handling refrigerant, electrical, and mechanical systems.
- Repaired or replaced defective parts such as compressors, motors, fans and other components in heating and cooling systems.
- Installed, repaired and maintained residential HVAC equipment, including furnaces, air conditioners, heat pumps and duct systems.
- Documented work orders, parts usage, and system readings after service visits.
- Diagnosed and repaired faults in HVAC systems, including refrigerant leaks, electrical issues, and mechanical failures.
HVAC commercial Technician
B&B facility maintenance
Alexandria, VA
03.2023 - 07.2023
- Troubleshot HVAC, plumbing, and electrical issues during service calls.
- Completed preventive maintenance on building systems and equipment.
- Performed commercial facility repairs for B&B facility maintenance properties.
- Collaborated with other technicians to diagnose difficult technical issues related to commercial products or services.
- Documented maintenance tasks, parts use, and service updates.
HVAC Installer Helper
FH FURR
Alexandria, VA
12.2022 - 03.2023
- Installed heating, ventilation, and air conditioning systems for residential
- Monitored safety protocols during all phases of the installation process.
- Followed safety standards and wore protective equipment on job sites.
HVAC Installer Helper
R&B heating and air
Alexandria, VA
05.2022 - 12.2022
- Installed furnaces, air conditioners, and heat pumps for R&B heating and air
- Measured and fitted ductwork for residential and commercial HVAC systems
- Connected refrigerant lines, electrical wiring, and drainage components during installations
Education
Hayfield Secondary High School
Alexandria, VASkills
- HVAC troubleshooting
- Equipment installation
- Preventive maintenance
- Equipment repair
- Refrigerant handling
- Electrical diagnostics
- Thermostat controls
- Ductwork installation
- Parts replacement
- Gas piping knowledge
- Safety compliance
- EPA regulations
- Time management
- Customer communication
Timeline
HVAC Technician
United Air Temp
03.2024 - Current
HVAC commercial Technician
B&B facility maintenance
03.2023 - 07.2023
HVAC Installer Helper
FH FURR
12.2022 - 03.2023
HVAC Installer Helper
R&B heating and air
05.2022 - 12.2022
Hayfield Secondary High School