DILSHAN VILLAWARAYAN
COLOMBO,SRI LANKA
Summary
Highly skilled HVAC technician with extensive expertise in system installation, maintenance, and advanced troubleshooting. Demonstrates proficiency in supervising and training technicians, ensuring safety compliance and quality control across projects. Adept at preventive and corrective maintenance, refrigerant handling, leak detection, and fault repair for electrical and mechanical systems. Experienced in maintenance scheduling, project management, team leadership, and energy efficiency optimization to deliver cost-effective solutions. Committed to providing exceptional customer service through technical reporting, documentation, and client coordination while driving operational excellence.
Overview
20
20
years of professional experience
3
3
years of post-secondary education
Work history
Senior technical leader
FROSTEC LANKA
COLOMBO, SRI LANKA
09.2024 - Current
- Expertise in supervising large-scale HVAC (Heating, Ventilation, and Air Conditioning) projects for residential, commercial, and industrial sectors.
- Directed and monitored a team of technicians, ensuring proper installation, preventive maintenance, and troubleshooting of AC systems.
- Specialized in diagnosing advanced technical issues in chillers, split systems, package units, VRV/VRF systems, and central plant operations.
- Prepared and implemented maintenance schedules, safety checklists, and compliance reports according to industry standards.
- Provided on-site training, guidance, and technical support to junior staff to improve efficiency and skills.
- Managed project timelines, manpower allocation, and material requirements for smooth workflow.
- Ensured adherence to safety protocols, energy efficiency guidelines, and environmental regulations.
- Built strong client relations by delivering high-quality service, accurate reporting, and cost-effective solutions.
Senior supervisor
ZEAL REF SYSTEM
COLOMBO, SRI LANKA
11.2015 - 08.2023
- Experience in supervising installation, maintenance, and repair of residential, commercial, and industrial HVAC systems.
- Led and trained a team of junior technicians, assigning daily tasks, monitoring performance, and ensuring timely project completion.
- Expert in diagnosing complex faults in compressors, motors, electrical circuits, refrigerant systems, and control panels.
- Skilled in preparing maintenance schedules, conducting inspections, and ensuring compliance with safety and environmental regulations.
- Coordinated with clients, contractors, and management to deliver cost-effective and efficient solutions.
- Proficient in advanced troubleshooting, refrigerant handling, duct design, and energy efficiency optimization.
- Maintained detailed service reports, inventory records, and job documentation.
- Recognized for strong leadership, problem-solving, and customer service skills.
AC technician
M.A. AL-KAWARI EST
DAMMAM, SAUDI ARABIA
12.2011 - 03.2015
- Over 8 Years of experience in installation, maintenance, and repair of split, window, ducted, and central AC systems.
- Skilled in diagnosing and troubleshooting electrical and mechanical faults including compressors, motors, thermostats, and refrigerant systems.
- Proficient in refrigerant charging, leak detection, and preventive maintenance to ensure system efficiency.
- Experienced in reading wiring diagrams, using testing equipment, and adhering to safety and environmental regulations.
- Performed routine servicing such as coil cleaning, filter replacement, duct inspection, and airflow balancing.
- Worked with residential, commercial, and industrial clients, ensuring high-quality service and customer satisfaction.
- Strong ability to work independently and as part of a technical team.
AC technician
EAP FILMS AND THEATRES (PVT) LIMITED
COLOMBO, SRI LANKA
11.2008 - 05.2011
- Skilled in the installation, maintenance, and repair of residential, commercial, and industrial air conditioning systems.
- Experienced in diagnosing faults such as refrigerant leaks, electrical malfunctions, and compressor issues.
- Proficient in cleaning, replacing, and repairing AC components including filters, coils, condensers, and motors.
- Adept at handling refrigerant charging, pressure testing, and thermostat calibration.
- Knowledgeable in reading wiring diagrams and performing electrical troubleshooting.
- Ensures compliance with safety standards and energy efficiency guidelines.
- Provides excellent customer service by explaining technical issues and offering preventive maintenance advice.
- Ability to work independently or as part of a team in fast-paced environments
AC TECHNICIAN
TUDAWEY BROTHERS
COLOMBO, SRI LANKA
02.2006 - 11.2008
- Assisted senior technicians in the installation, maintenance, and repair of residential and commercial air conditioning units.
- Learned to identify common AC problems such as gas leakage, wiring issues, and compressor faults.
- Gained hands-on experience in handling tools, gauges, and testing equipment.
- Supported in cleaning filters, checking refrigerant levels, and ensuring proper airflow.
- Observed safety protocols and followed company procedures during work.
- Developed basic knowledge of electrical circuits and HVAC troubleshooting.
- Practiced customer service skills by assisting in communicating maintenance updates.
Education
Diploma - AIR CONDITION & REFRIGERATION
ACS TRAINING SCHOOL
COLOMBO,SRI LANKA 01.2004 - 12.2006
Skills
- HVAC System Installation & Maintenance
- Advanced Troubleshooting & Diagnostics
- Supervising & Training Technicians
- Preventive & Corrective Maintenance
- Refrigerant Handling & Leak Detection
- Electrical & Mechanical Fault Repair
- Safety Compliance & Quality Control
- Maintenance Scheduling & Planning
- Project Management & Team Leadership
- Customer Service & Client Coordination
- Technical Reporting & Documentation
- Energy Efficiency Optimization
Languages
English
Advanced
SINHALA
Fluent
Tamil
Fluent
Timeline
Senior technical leader
FROSTEC LANKA
09.2024 - Current
Senior supervisor
ZEAL REF SYSTEM
11.2015 - 08.2023
AC technician
M.A. AL-KAWARI EST
12.2011 - 03.2015
AC technician
EAP FILMS AND THEATRES (PVT) LIMITED
11.2008 - 05.2011
AC TECHNICIAN
TUDAWEY BROTHERS
02.2006 - 11.2008
Diploma - AIR CONDITION & REFRIGERATION
ACS TRAINING SCHOOL
01.2004 - 12.2006
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