Exam at a glance
Questions
110
Time limit
210 min
Passing
~72% (scaled; CSLB/PSI)
Practice bank
200 Qs
What the exam covers
- 1
Planning and Layout
20% · 39 lessons
- 2
Heating Systems
20% · 40 lessons
- 3
Cooling and Refrigeration
25% · 50 lessons
- 4
Ventilation and Air Distribution
20% · 38 lessons
- 5
Controls, Electrical and Safety
15% · 30 lessons
How to prepare on Step2Study
1. Learn
Work through the Academy modules — short lessons with key facts and memory tricks.
2. Practice
Take the numbered practice tests with instant feedback, flashcards and mental maps.
3. Simulate
Sit a full timed simulation to check you are ready for exam day.