California Automotive HVAC Technician
Certification Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
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1. What is the primary function of an automotive HVAC system?
A. Increase fuel efficiency
B. Provide temperature and humidity control
C. Regulate battery voltage
D. Improve engine performance
The HVAC system ensures passenger comfort by controlling the cabin
temperature and humidity.
2. Which refrigerant is commonly used in modern automotive air
conditioning systems?
A. R-12
B. R-134a
C. R-11
D. R-717
R-134a replaced R-12 due to environmental concerns and is widely used in
vehicles manufactured after 1994.
,3. What does the acronym HVAC stand for?
A. Heating, Ventilation, and Valuation Control
B. Heat and Vapor Circulation
C. Heating, Ventilation, and Air Conditioning
D. Heat, Vacuum, and AC
HVAC refers to systems designed to control heating, ventilation, and air
conditioning.
4. What component compresses the refrigerant in an automotive A/C
system?
A. Condenser
B. Compressor
C. Receiver-drier
D. Evaporator
The compressor pressurizes the refrigerant and circulates it through the
system.
5. Which component removes moisture from the refrigerant?
A. Evaporator
B. Expansion valve
C. Receiver-drier
D. Condenser
The receiver-drier contains desiccant material that absorbs moisture from
the refrigerant.
, 6. What is the function of the expansion valve in an A/C system?
A. Absorb heat from the cabin air
B. Filter refrigerant
C. Regulate refrigerant flow into the evaporator
D. Pressurize the refrigerant
The expansion valve meters the flow of refrigerant into the evaporator to
control cooling.
7. What happens in the evaporator?
A. The refrigerant is pressurized
B. The refrigerant is condensed
C. Heat is absorbed from the cabin air
D. Moisture is released into the air
The evaporator allows the refrigerant to absorb heat, cooling the air inside
the vehicle.
8. Why is it important to recover refrigerant before servicing an A/C
system?
A. To reduce service cost
B. To improve system performance
C. To protect the environment and comply with EPA regulations
D. To eliminate odors
Releasing refrigerant into the atmosphere is illegal and harmful to the
environment.
9. What tool is used to measure high- and low-side pressures in an A/C
system?
A. Ohmmeter
Certification Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
Download Pdf
1. What is the primary function of an automotive HVAC system?
A. Increase fuel efficiency
B. Provide temperature and humidity control
C. Regulate battery voltage
D. Improve engine performance
The HVAC system ensures passenger comfort by controlling the cabin
temperature and humidity.
2. Which refrigerant is commonly used in modern automotive air
conditioning systems?
A. R-12
B. R-134a
C. R-11
D. R-717
R-134a replaced R-12 due to environmental concerns and is widely used in
vehicles manufactured after 1994.
,3. What does the acronym HVAC stand for?
A. Heating, Ventilation, and Valuation Control
B. Heat and Vapor Circulation
C. Heating, Ventilation, and Air Conditioning
D. Heat, Vacuum, and AC
HVAC refers to systems designed to control heating, ventilation, and air
conditioning.
4. What component compresses the refrigerant in an automotive A/C
system?
A. Condenser
B. Compressor
C. Receiver-drier
D. Evaporator
The compressor pressurizes the refrigerant and circulates it through the
system.
5. Which component removes moisture from the refrigerant?
A. Evaporator
B. Expansion valve
C. Receiver-drier
D. Condenser
The receiver-drier contains desiccant material that absorbs moisture from
the refrigerant.
, 6. What is the function of the expansion valve in an A/C system?
A. Absorb heat from the cabin air
B. Filter refrigerant
C. Regulate refrigerant flow into the evaporator
D. Pressurize the refrigerant
The expansion valve meters the flow of refrigerant into the evaporator to
control cooling.
7. What happens in the evaporator?
A. The refrigerant is pressurized
B. The refrigerant is condensed
C. Heat is absorbed from the cabin air
D. Moisture is released into the air
The evaporator allows the refrigerant to absorb heat, cooling the air inside
the vehicle.
8. Why is it important to recover refrigerant before servicing an A/C
system?
A. To reduce service cost
B. To improve system performance
C. To protect the environment and comply with EPA regulations
D. To eliminate odors
Releasing refrigerant into the atmosphere is illegal and harmful to the
environment.
9. What tool is used to measure high- and low-side pressures in an A/C
system?
A. Ohmmeter
