Education: Secondary (high) school graduation certificate. Work setting: On-site customer service. Tasks: Install refrigeration systems. Install ventilation, air handling and air conditioning systems. Measure and lay out reference points for installation. Prepare tenders and quotations. Troubleshoot ventilation, air handling, refrigeration and air conditioning systems. Assemble and install refrigeration or air conditioning components. Measure, cut and connect piping using welding and brazing equipment. Start up system and test for leaks using testing devices. Perform maintenance such as, recharging system with refrigerant, checking and testing regulators or calibrating system. Interpret gas codes. Personal suitability: Flexibility. Initiative. Judgement. Reliability. Experience: 2 years to less than 3 years. Employment terms options: Day. Weekend.