Georgia Conditioned Air Contractor
Class I Exam — CA-I Practice Questions
And Answers Newest (2025 - 2026
Update) From Real Past Papers
Questions – Set 100 Most Common
Actual Exam Frequently Tested
Questions And Answers In Details 100%
Verified Exam Highly Recommendable
For Professional Graded A+
(Practice questions created from the official exam content areas
and difficulty style. These are not copied from past papers. The
official exam references include mechanical code, fuel gas code,
electrical code, ACCA Manual J/D, refrigeration technology, and
business/law topics.)
1. According to residential HVAC design practice, which manual is used for
residential heating and cooling load calculations?
A. ACCA Manual D
B. ACCA Manual S
,C. ACCA Manual J
D. ACCA Manual T
Answer: C. ACCA Manual J
Explanation: ACCA Manual J is used to calculate residential heating and cooling
loads. Manual D is used for duct design, while Manual S covers equipment
selection.
2. The primary function of the compressor in a refrigeration system is to:
A. Remove moisture from refrigerant
B. Increase refrigerant pressure and temperature
C. Lower refrigerant pressure
D. Measure refrigerant flow
Answer: B. Increase refrigerant pressure and temperature
Explanation: The compressor takes low-pressure vapor refrigerant from the
evaporator and compresses it into a high-pressure, high-temperature vapor.
3. In a standard vapor-compression refrigeration cycle, refrigerant leaves the
condenser as:
A. Low-pressure vapor
B. High-pressure liquid
C. Low-pressure liquid
D. Superheated vapor
Answer: B. High-pressure liquid
Explanation: The condenser removes heat from refrigerant vapor, causing it to
condense into a high-pressure liquid before entering the metering device.
4. Superheat is the temperature of refrigerant:
A. Below saturation temperature
B. Above saturation temperature as a vapor
C. At freezing temperature
D. Equal to condenser temperature
, Answer: B. Above saturation temperature as a vapor
Explanation: Superheat ensures only vapor enters the compressor and helps
prevent liquid refrigerant damage.
5. The main purpose of a metering device is to:
A. Increase refrigerant pressure
B. Control refrigerant flow and reduce pressure
C. Remove oil from refrigerant
D. Increase airflow
Answer: B. Control refrigerant flow and reduce pressure
Explanation: Expansion valves and other metering devices regulate refrigerant
entering the evaporator and create the pressure drop required for cooling.
6. A dirty air filter in an HVAC system will usually cause:
A. Increased airflow
B. Reduced airflow
C. Increased refrigerant charge
D. Higher electrical voltage
Answer: B. Reduced airflow
Explanation: A restricted filter decreases air movement across the coil, reducing
system efficiency and possibly causing coil freeze-up.
7. The purpose of Manual D is:
A. Refrigerant charging
B. Duct system design
C. Electrical wiring
D. Gas piping design
Answer: B. Duct system design
Explanation: ACCA Manual D provides procedures for sizing and designing
residential duct systems.
Class I Exam — CA-I Practice Questions
And Answers Newest (2025 - 2026
Update) From Real Past Papers
Questions – Set 100 Most Common
Actual Exam Frequently Tested
Questions And Answers In Details 100%
Verified Exam Highly Recommendable
For Professional Graded A+
(Practice questions created from the official exam content areas
and difficulty style. These are not copied from past papers. The
official exam references include mechanical code, fuel gas code,
electrical code, ACCA Manual J/D, refrigeration technology, and
business/law topics.)
1. According to residential HVAC design practice, which manual is used for
residential heating and cooling load calculations?
A. ACCA Manual D
B. ACCA Manual S
,C. ACCA Manual J
D. ACCA Manual T
Answer: C. ACCA Manual J
Explanation: ACCA Manual J is used to calculate residential heating and cooling
loads. Manual D is used for duct design, while Manual S covers equipment
selection.
2. The primary function of the compressor in a refrigeration system is to:
A. Remove moisture from refrigerant
B. Increase refrigerant pressure and temperature
C. Lower refrigerant pressure
D. Measure refrigerant flow
Answer: B. Increase refrigerant pressure and temperature
Explanation: The compressor takes low-pressure vapor refrigerant from the
evaporator and compresses it into a high-pressure, high-temperature vapor.
3. In a standard vapor-compression refrigeration cycle, refrigerant leaves the
condenser as:
A. Low-pressure vapor
B. High-pressure liquid
C. Low-pressure liquid
D. Superheated vapor
Answer: B. High-pressure liquid
Explanation: The condenser removes heat from refrigerant vapor, causing it to
condense into a high-pressure liquid before entering the metering device.
4. Superheat is the temperature of refrigerant:
A. Below saturation temperature
B. Above saturation temperature as a vapor
C. At freezing temperature
D. Equal to condenser temperature
, Answer: B. Above saturation temperature as a vapor
Explanation: Superheat ensures only vapor enters the compressor and helps
prevent liquid refrigerant damage.
5. The main purpose of a metering device is to:
A. Increase refrigerant pressure
B. Control refrigerant flow and reduce pressure
C. Remove oil from refrigerant
D. Increase airflow
Answer: B. Control refrigerant flow and reduce pressure
Explanation: Expansion valves and other metering devices regulate refrigerant
entering the evaporator and create the pressure drop required for cooling.
6. A dirty air filter in an HVAC system will usually cause:
A. Increased airflow
B. Reduced airflow
C. Increased refrigerant charge
D. Higher electrical voltage
Answer: B. Reduced airflow
Explanation: A restricted filter decreases air movement across the coil, reducing
system efficiency and possibly causing coil freeze-up.
7. The purpose of Manual D is:
A. Refrigerant charging
B. Duct system design
C. Electrical wiring
D. Gas piping design
Answer: B. Duct system design
Explanation: ACCA Manual D provides procedures for sizing and designing
residential duct systems.
