GELNER CASTILLO Jr
Summary
Experienced air conditioning equipment mechanic with a track record of overseeing preventive maintenance and capital projects to sustain peak efficiency. Committed to maintaining the safety, cleanliness, and integrity of buildings and equipment. Well-versed in repairing and maintaining HVAC equipment. Proficient in determining repair requirements, diagnosing, and fixing problems quickly to get equipment back up and running.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Air Conditioning Equipment Mechanic Worker
US Architect of the Capital
04.2022 - Current
- Operate, maintain, and repair air conditioning systems across office buildings and critical facilities to ensure precise temperature and humidity control.
- Install and connect ventilation and exhaust systems, ensuring vibration-free and efficient operation.
- Perform brazing and welding to fuse chilled water and refrigerant lines to system components including condensers, evaporators, and compressors.
- Evacuate, dehydrate, and charge HVAC systems with appropriate refrigerants; inspect for and repair refrigerant leaks.
- Calibrate and reset control systems to maintain optimal environmental conditions.
- Troubleshoot and diagnose mechanical and control system issues based on inspections and service calls.
- Fabricate and repair mechanical parts such as pipe joints, flanges, and bearing sleeves using welding and machining techniques.
- Adjust electrical and pneumatic controls for chilled/hot water valves, heaters, dampers, and air return systems to optimize performance.
- Conduct routine maintenance on electronic HVAC components using manufacturer specifications and industry standards.
- Inspect systems for proper cycles, refrigerant/oil levels, motor and compressor temperatures, belt conditions, and overall operational integrity.
- Document and report major repair needs to supervisors and perform necessary adjustments to maintain system reliability.
Laborer (Recycler)
US Architect of the Capital
02.2019 - 04.2022
- Loaded and unloaded heavy materials, supplies, and equipment using hand trucks, dollies, and manual handling techniques.
- Collected and disposed of trash, debris, and recyclables from buildings and surrounding grounds; maintained cleanliness of waste and recycling containers.
- Performed general custodial duties including sweeping, mopping, waxing floors, washing windows, and dusting surfaces.
- Cleared snow and ice from building entrances and walkways; applied salt and ensured safe access during inclement weather.
- Supported event logistics by setting up and arranging furniture and equipment for meetings, dining areas, classrooms, and special events.
- Moved and reconfigured furniture and equipment for room changes; handled items weighing over 80 lbs.
- Assisted skilled trades personnel with short-term construction and repair projects, including demolition work using hand tools.
- Followed OSHA safety standards and internal operating procedures to ensure a safe and compliant work environment
Chief Engineer
Bozzuto - Residences on the Avenue
02.2017 - 02.2019
- Manage property operations of a 335-unit building with 50,000 sqft of retail to ensure protection and enhancement of asset value
- Oversee preventive maintenance programs for key asset systems
- Maintain 2 Cooling Towers, with a capacity of 500 tons each, by regularly checking for leaks and implementing preventive measures
- Proficient in managing and maintaining WHSP individual packaged units and resolving condensation pipe issues related to HVAC drain lines
- Manage 2 heat exchangers and 3 boilers to ensure proper functioning and meeting operational requirements
- Develop extensive expertise in emergency maintenance management, particularly in response to multiple stove-related fires and floods
- Install smart thermostats to increase energy efficiency
- Spearhead the installation of energy-reducing items and maintenance of the green roof
- Vigilantly monitor BMS System-controlled mechanical equipment daily for alarms, ensuring proactive response and resolution
- Manage a team of 4, assign work, and provide supervision and direction
- Maintain high standards for contracted services to ensure safety, cleanliness, and integrity of buildings and equipment
- Manage annual building systems inspection and maintenance requirements
- Ensure the timely completion of maintenance requests and turnovers, fostering a proactive and responsive approach
- Reinforce staffing schedules and provide 24/7 emergency coverage
- Manage staff development and learning initiatives
- Ensure retail tenants comply with lease-required maintenance
- Coordinate with Tenant Coordination for timely completion of Retail build-out
Service Manager
Bozzuto - 77H
02.2015 - 02.2017
- Managed the operational aspects of the property to protect and improve its value
- Supervised and provided direction to assigned staff, ensuring tasks were completed on time and within budget
- Implemented preventive and ongoing maintenance programs
- Developed and managed multi-year capital project plans
- Monitored performance of in-house and contracted services and took necessary action to maintain high standards
- Maintained safety, cleanliness, and integrity of all areas of the property
- Evaluated property needs and recommended improvements
- Overseen the condition and preventive maintenance programs of key asset systems
- Managed insurance exposures and ensured public safety
- Developed and implemented strategies to resolve operational and compliance-related challenges
- Performed regular site inspections to assess property condition and compliance
- Created and maintained long-range capital improvement plans
- Ensured expeditious completion of maintenance requests and apartment turnovers
- Managed staff schedules and provided 24/7 emergency coverage
- Collaborated with Tenant Coordination to expedite completion of Landlord work and tenant openings
- Leading by example and being a role model for the standards and behaviors consistent with the core values and culture of Bozzuto
- Dedicating time to hiring, developing and providing on-the-job and classroom education opportunities to techs and community care associates
- Showing care and concern for our residents through timely follow-up and meticulous completion of their apartment service tickets
- Resolving maintenance issues in the area of HVAC, electrical, plumbing and appliance repair
- Managing the make-ready and apartment turnover process with attention to detail and timeliness so apartments can be leased and new residents can move in
- Preserving the value of the building by consistently executing on preventative maintenance programs and general upkeep and cleanliness, snow removal and grounds maintenance
- Sustaining peak efficiency operation levels for all property components
- Adhering to applicable building, county and safety codes/standards, while running an accident-free operation
- Ensuring completion of annual building systems inspections required by the jurisdiction
- Leading cost-effective capital improvement and special projects
- Establishing and managing vendor relationships and projects within budget parameters
- Reinforcing monthly staffing schedules, ensuring 24/7 emergency coverage
Engineman
United States Navy
- Operate, maintain, and secure internal combustion engines, refrigeration and air conditioning equipment, compressed air systems, and shipboard auxiliary equipment
- Record pressure and temperature readings on operating equipment
- Accomplished ship's force maintenance actions on Emergency Diesel Generators, saving the Navy money
- Coordinated with inspectors and shipboard leadership during a major diesel inspection, ensuring completion in standards and fully operational
- Directed the removal and installation of motor-driven fire pumps' valves
- Ensured safety regulations
Education
Basic Engineering Common Core -
Great Lakes
01.2006
Associate of Applied Science - Electronic Engineering Technology
Lincoln College of Technology
Columbia, MDSkills
- Mold Awareness
- Asbestos Awareness
- Effective communication skills
- Troubleshooting skills
- HVAC systems maintenance
- Electronic control systems
- Pneumatic systems repair
- Troubleshooting systems
- Electrical troubleshooting
- Building maintenance
- Preventive maintenance
- Mechanical troubleshooting
- Refrigerant handling
- HVAC installation
Certification
- CFC Universal
- Beckett Certification
- Indoor Quality Air Certification
- Green Certification
- 410A Certification
- 609 MVAC Certification
- Low Pressure Boiler
- HVAC Apprentice License
- Mold Awareness
- Asbestos Awareness
Timeline
Air Conditioning Equipment Mechanic Worker
US Architect of the Capital
04.2022 - Current
Laborer (Recycler)
US Architect of the Capital
02.2019 - 04.2022
Chief Engineer
Bozzuto - Residences on the Avenue
02.2017 - 02.2019
Service Manager
Bozzuto - 77H
02.2015 - 02.2017
Engineman
United States Navy
Basic Engineering Common Core -
Great Lakes
Associate of Applied Science - Electronic Engineering Technology
Lincoln College of Technology
Similar Profiles
Dustin PfiefferDustin Pfieffer
Gardner at Architect of the CapitalGardner at Architect of the Capital
Richard Poole JrRichard Poole Jr
Electrician at Is Architect of the CapitalElectrician at Is Architect of the Capital
Nicole PuyoNicole Puyo
Executive Assistant at Architect CapitalExecutive Assistant at Architect Capital
JAMES LUXJAMES LUX
AIR CONDITIONING EQUIPMENT MECHANIC WG-5306-10 at Sierra Army DepotAIR CONDITIONING EQUIPMENT MECHANIC WG-5306-10 at Sierra Army Depot
Kyle McMahonKyle McMahon
Air Conditioning Equipment Mechanic at Veterans Affairs HospitalAir Conditioning Equipment Mechanic at Veterans Affairs Hospital