JAVIER ROSARIO
637 Silver Pass Apt.A, Ocala,FL
Summary
Exceptionally dependable and well-trained maintenance HVAC with experience in business facilities. Adept at handling multiple projects simultaneously whether working independently or as part of a team. Customer service orientated.
Overview
13
13
years of professional experience
1
1
Certification
Work History
Commerical Hvac/R Technician
Mecon Mechanical
08.2024 - Current
- Improved system efficiency by conducting thorough diagnostics and implementing preventive maintenance measures for refrigeration systems.
- Maintained safety standards by using appropriate protective gear and adhering to best practices.
- Conducted diagnostic tests and read results.
- Ensured safety compliance by following industry standards, guidelines, and regulations when installing or repairing refrigeration systems.
- Calibrating HVAC control systems to ensure accurate operation.
- Updated refrigeration systems, modifying HVAC components and refurbishing chiller plants and panels.
Coastal Mechanical
Service Technician
03.2023 - 06.2025
- Evaluated final product's overall performance, reliability and safety.
- Identified deficiencies in mechanical processes to develop improvements.
- Conducted maintenance service on HVAC systems to increase life expectancy of equipment and prevent costly repair work.
- Traveled to job sites for both scheduled and emergency appointments.
- Kept accurate records of time and materials used for each job to compile into service reports.
- Filled out detailed work orders for each job completed.
- Read blueprints, wiring diagrams, piping schemes and engineering specifications to diagnose and repair
- Maintained and repaired industrial chillers weighing up to 500 tons.
- Diagnosed and troubleshot problems, repairing, and restoring machines to peak performance.
Hvac-R Technician
Frank Gay Commercial Service
04.2022 - 01.2023
- Trained new employees on maintenance practices on all HVAC/R related equipment
- Ensure customer satisfaction by providing quality service
- Serviced walk in coolers, open air coolers, self contained coolers, walk in freezers (remote & self contained), ice makers
- Communicated with store managers pertaining to service calls
- Secured necessary parts and made repairs in a timely manner
- Assisted others in proper job development, preparation, layout installation, start-up and systems testing
- Provide Repair & Maintenance of Liebert Computer Room grade, and, Various Brands of Commercial Rooftop H.V.A/C & Refrigeration
- Including multiple Industrial Cooling Tower Systems.
- Diagnosed and troubleshot problems, repairing, and restoring machines to peak performance.
- Inspected equipment to diagnose operational issues.
Hvac Technician
Lennox International
06.2019 - 09.2020
- Service, Repairs, install commercial RTU systems, Makeup Units, Wall unit Heaters, Exhaust Fan
- Preventive maintenance on systems
- Troubleshoot breakdowns and repairs malfunctioning
- Install Semi and Hermetic compressor, coils, expansion device, 3phase direct drive motor, VFD control, RTU smoke detector , Prodigy M2/M3 control board, CO2 sensor
- Strong working knowledge of job site safety as well as ability to complete a company specific safety.
Engineering Supervisor
Summer Bay Resort
12.2018 - 06.2019
- Handle all aspects of maintenance properties
- Supervise maintenance associates providing training, motivation, and performance feedback
- Monitor and direct scheduling of all maintenance personnel vendors and ensure staff adheres to company policies procedures
- Track inventory for repairs and maintenance
- Assist with planning and execution of all preventative maintenance, repairs programs such as Mechanical, electrical, Hvac, plumbing, painting, fire and safety system
Hvac Service Technician
Hvac
10.2015 - 08.2018
- Troubleshoot and repairs, systems
- Work as "on-call" service technician
- Service, Repairs, Install, Sales on heat pump system, Package units, Split systems, Furnaces, Boilers, Bypass Humidifier, Install UV bulb system, hot water tank
- Complete preventative maintenance
- Clean evaporator coils, power wash condenser coils
- Change filters, belts, and lubricate blower assemblies on commercial and residential
- Assisted in Air Duct Cleaning, maintained professional customer relationships, and communicated complex information to update customers on project status.
Hvac Technician/ General Labor
Metro Tri State Construction
05.2014 - 05.2015
- Handle routine demolition and repairs on residential, commercial properties
- Distribute and utilize building materials, machinery tools
- Transport employees to destination
- Troubleshooting, diagnosing, test, repairs problems in Hvac systems and propose relevant solutions
- Maintenance on commercial and domestic units
- Fabrication and installation of low and medium pressure ductwork, Hvac equipment including vav boxes, plex and grills
- Installing or repairing electrical wiring, plumbing, drywall, and painting
Hvac Service Technician
HSB Cooling Inc
10.2012 - 05.2014
- Service maintenance by changing filters, belts blow out drain line and clean coils
- Commercial and domestic repairs
- Disassembling and reassembling units
- Insulation of ducts and refrigerant lines
- Use of acetylene torch for brazing copper Interacting with clients by filling out invoice
- Service maintenance on heaters and boilers
Education
Associate of Science - Industrial Supervision
Penn Foster Career School
Scranton, PA11-2025
900-Hour Air Conditioning And Refrigeration - 900-Hour Air Conditioning And Refrigeration
APEX TECHNICAL SCHOOL
New York, NY12-2013
High School Diploma -
PENN FOSTER HIGH SCHOOL
Scranton, Pa03-2012
Skills
- Air Conditioning and Refrigeration Repairs, Service, and Installation – Commercial and domestic repairs, pressure enthalpy diagrams, troubleshooting domestic units and pump down systems; general maintenance on air conditioning parts, disassembling and reassembling air conditioning units
Equipment - Gauge manifold, vacuum pump, recovery tank, nitrogen tank, ohm meter, nut drivers, charging cylinder, braze copper, electrical pliers, clamp on, multimeter, screwdrivers, pliers, compressor analyzer, acetylene torch for brazing, grinder, saw, hand saw, electrical drill, level, hammer, pipe cutter, refrigerant weight scale, safety glasses
Certification
NATE Certified #5711006
(EPA)608 Universal
OSHA 10 & 30
Timeline
Commerical Hvac/R Technician
Mecon Mechanical
08.2024 - Current
Coastal Mechanical
Service Technician
03.2023 - 06.2025
Hvac-R Technician
Frank Gay Commercial Service
04.2022 - 01.2023
Hvac Technician
Lennox International
06.2019 - 09.2020
Engineering Supervisor
Summer Bay Resort
12.2018 - 06.2019
Hvac Service Technician
Hvac
10.2015 - 08.2018
Hvac Technician/ General Labor
Metro Tri State Construction
05.2014 - 05.2015
Hvac Service Technician
HSB Cooling Inc
10.2012 - 05.2014
Associate of Science - Industrial Supervision
Penn Foster Career School
900-Hour Air Conditioning And Refrigeration - 900-Hour Air Conditioning And Refrigeration
APEX TECHNICAL SCHOOL
High School Diploma -
PENN FOSTER HIGH SCHOOL
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