Refrigeration Operator Class A Exam Prep
435 original exam-style questions for the advanced Refrigeration Operator Class A ticket, across all 5 units — multi-stage and cascade systems, purge and oil-still operation, the reversed Carnot cycle and pressure-enthalpy charts, and COP / mass-flow / tonnes-of-refrigeration calculations. Every question has a full worked explanation. Adaptive SMART Quiz, unlimited mock exams, offline access.
What’s covered
All 435 questions are written to the public Refrigeration Operator Class A syllabus published by Ontario’s TSSA — the advanced material layered on top of the entry SOPEEC Refrigeration Operator syllabus.
The real exam format
Class A is the advanced refrigeration operator ticket, above the entry certificate. The level, format, and prerequisites vary by province — Ontario’s Refrigeration Operator Class A became multiple choice on January 1, 2025 (100 questions, 3 hours, 65% to pass). Confirm your province’s current requirements with your regulator.
| Parameter | Refrigeration Operator Class A |
|---|---|
| Level | Advanced — above the entry Refrigeration Operator ticket; typically requires the entry certificate plus logged plant experience first (varies by province) |
| Format | Multiple choice (advanced Class A) |
| Questions & time | Vary by province — Ontario (Class A): 100 questions / 3 hours (multiple choice since Jan 1, 2025) · Nova Scotia (First Class): two multiple-choice papers |
| Pass mark | 65% (Québec: 60%) |
| Availability | An advanced level exists in Ontario, Nova Scotia, Newfoundland & Labrador, PEI and Québec; British Columbia, Alberta and Manitoba have no advanced refrigeration level |
| Note | Confirm your province’s current format and prerequisites with your regulator before you register |
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