The exam content shown below only lists main category headings. Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.
| Subject Areas | # of Questions |
|---|---|
| Electrical Knowledge, Motors, and Controls | 20 |
| Piping | 15 |
| Refrigeration and Air Conditioning | 25 |
| Heating Systems | 20 |
| Air Distribution Systems | 15 |
| Safety | 5 |
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