David Maxwell Croker

• Improved overall system performance with meticulous ductwork cleaning services that increased airflow efficiency in residential properties.
• Boosted customer satisfaction by providing timely and professional air conditioning maintenance services.
• Maintained a safe working environment by adhering to safety protocols while performing tasks such as electrical wiring, refrigerant handling, and equipment installation.
• Troubleshot complex mechanical issues using diagnostic tools, resulting in faster resolution times for customers experiencing system failures.

• Repaired refrigerant leaks and restored system performance to specification
• Coordinated shutdowns and access requirements with site personnel and contractors
• Mentored junior technicians on fault-finding, servicing standards, and safe work practices
• Documented maintenance activities, compliance checks, and equipment condition accurately

• Installed split, ducted, and packaged air conditioning systems across commercial sites
• Diagnosed refrigeration and electrical faults using test instruments and schematics
• Performed preventative maintenance on HVAC equipment to maintain reliable operation
• Serviced compressors, motors, fans, and controls following safety procedures

• Balanced refrigerant levels, adjusted controls, and calibrated thermostats for consistent temperature regulation.
• Interpreted blueprints, wiring diagrams, and technical manuals to support accurate equipment service.
• Coordinated with project teams and clients to complete repairs safely and minimize downtime.
• Mentored junior mechanics on troubleshooting methods, safety practices, and quality workmanship.

• Installed and serviced commercial air conditioning systems, ensuring reliable cooling performance and code compliance.
• Diagnosed electrical, refrigeration, and airflow faults using gauges, meters, and test equipment.
• Repaired compressors, motors, pumps, and control components to restore system operation efficiently.
• Performed preventive maintenance on chillers, rooftop units, and split systems to reduce breakdowns.

Mainenance of AC equipment. Servicing AHUs, pumps, FCUs and controls.

• - Night Fill
• - General Grocery
• - Dairy and Freezer
• - Fruit and Vegetables
• - Checkout Operator
• - Stock Rotation
• - Customer Service

• Installation and maintenance of Domestic and commercial refrigeration and air conditioning systems

• Installation of domestic and commercial air conditioning systems

• - Installation and maintenance of air conditioning plant and equipment, ranging from packaged units to total building systems in various buildings.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - Attending call outs including nights, public holidays and weekends.
• - On the job maintenance and repair assessments and quotes.
• (Hasties Services)

• - Installation and maintenance of air conditioning plant and equipment, ranging from packaged units to total building systems in various buildings.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - Attending call outs including nights, public holidays and weekends.
• - On the job maintenance and repair assessments and quotes.
• (Liebert Corp)

• - Installation and maintenance of air conditioning plant and equipment, ranging from packaged units to total building systems in various buildings.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - Attending call outs including nights, public holidays and weekends.
• - On the job maintenance and repair assessments and quotes.
• - Training of Apprentices

• - Installation and maintenance of Telstra (Canberra area, Goulburn, and Snowy Mountains area) air conditioning plant and equipment, ranging from packaged units to total building systems.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - Attending call outs including nights, public holidays and weekends.
• - On the job maintenance and repair assessments and quotes.
• - Training of Apprentices
• - Supervision of Tradesman, Apprentices, and Subcontractors.
• (A Division of FFE Building Services ACT)

• - Installation and maintenance of air conditioning plant and equipment, ranging from packaged units to total building systems in various buildings.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - Attending call outs including nights, public holidays and weekends.
• - On the job maintenance and repair assessments and quotes.
• - Training of Apprentices
• (ACT)

• - Installation and maintenance of air conditioning plant and equipment, ranging from packaged units to total building systems in various buildings.
• - Maintenance of associated control systems e.g. DDCs, Pneumatic, Electronic
• - On the job maintenance.
• (ACT)