Air conditioning 114 Maintenance and repair 114 Automobiles 38 Heating and ventilation 26 Refrigeration and refrigerating machinery 26 Ventilation 13 Heating 11 Buildings 8 Campus planning 8 Malaysia 8 Melaka 8 Planning 8 Data processing 7 Design and construction 7 Automatic control 4 Management information systems 4 Universities and colleges 4 Valves 4 Efficiency 3 Electric circuits 3 Air 2 Air flow 2 Automotive 2 Buses 2 Certification 2 Compressors 2 Examinations 2 Fault location (Engineering) 2 Flow meters 2 Furnaces 2