| Subject Areas | % of Questions |
|---|---|
| Theory, Systems Types, Terminology, and General Requirements | 30 |
| Refrigerant and Condensate Piping | 12 |
| Evaporators, Compressors, Condensers, Chillers, Cooling Towers, Heat Pumps, Heating and AC Appliances | 15 |
| Conditioned Air, Supply, Return, Makeup, Combustion Air, Air Ducts, Dampers and Insulation | 7 |
| Electrical Fundamentals and Controls | 9 |
| Refrigerants | 10 |
| Operationing Procedures, including Safety | 9 |
| Maintenance and Repairs | 8 |
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