Refrigeration and Air Conditioning Mechanic · 313A
CSA B52, refrigeration cycles, and system troubleshooting.
6MWAs
15Tasks
1Sub-tasks
125Questions
Major Work Activities
Click any MWA to expand its tasks and subtasks. Question counts mirror the official Red Seal interprovincial exam weighting.
Your progress
Per-MWA proficiency, attempted percentage, and risk score appear here once you start practicing this trade.
APerforms common occupational skills
— Proficient— Developing0% Attempted
BPerforms routine trade activities
— Proficient— Developing0% Attempted
CPlans installation
— Proficient— Developing0% Attempted
DPerforms installation
— Proficient— Developing0% Attempted
EPerforms commissioning
— Proficient— Developing0% Attempted
FPerforms maintenance and service
— Proficient— Developing0% Attempted
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How this exam practice works
Question volume
10 to 125 per session
Scope control
Whole trade, single MWA, or task
Timing
5 min to unlimited, pause/resume
Feedback mode
Per-question or deferred scoring
Source aligned
Built from the published RSOS
Real exam weighting
MWA percentages mirror the IP exam
Canadian codes
Current provincial OHS + trade codes
Exam-realistic
Timed, weighted, adjustable difficulty