ASE A7 · Heating & Air Conditioning
Refrigeration System Components
Diagnosing and replacing A/C refrigeration components: compressors and clutches, protection devices, condensers, evaporators, expansion valves, orifice tubes and driers.
- Questions on the A7 test
- 10
- Share of the test
- 20%
- GearheadPass questions
- 37
- With exhibits
- 4
What this area covers
ASE's task list for Refrigeration System Components on the A7 Heating & Air Conditioning test groups into these tasks. Expect diagnosis-first questions: what's the most likely cause, what should be checked next, and which technician is right.
- Protection devices and pressure controls
- Compressor, clutch and lubricant
- Compressor displacement controls
- Condenser, hoses and fittings
- Expansion valve, orifice tube and drier
- Evaporator, drains and service valves
How to study it
- This area carries 10 of the A7 test's questions (20%). Give it study time in proportion.
- Work the free questions first, then read every explanation, including the ones you got right; the reasoning is what transfers to new questions.
- 2 of the 5 free questions here are Technician A/B items. Judge each statement on its own before you pick A only, B only, Both or Neither.
- 2 free questions use an exhibit. Read the exhibit's numbers before the answer options.
- Always confirm specifications in the vehicle manufacturer's service information. Test questions assume you would.
Free practice quiz
5 Refrigeration System Components questions with explanations
All 37 Refrigeration System Components questions are in the app
Plus a full-length A7 mock, flash cards, and English or Spanish on every question.
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