Georgia Conditioned Air Contractor Class II
Examination Questions and Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary responsibility of a Georgia Conditioned Air
Contractor Class II license holder?
A. Installing only residential window air conditioners
B. Performing electrical utility work
C. Installing, servicing, and maintaining conditioned air systems of
unlimited size and capacity
D. Selling HVAC equipment exclusively
Rationale: A Georgia Conditioned Air Contractor Class II license
authorizes contractors to install, service, repair, alter, and maintain
conditioned air systems without tonnage limitations. Unlike the Class I
license, Class II has no size restrictions.
, 2. Which refrigerant safety classification identifies refrigerants with
lower toxicity and no flame propagation?
A. B2L
B. A3
C. A1
D. B3
Rationale: ASHRAE Standard 34 classifies refrigerants based on toxicity
and flammability. A1 refrigerants have low toxicity and no flame
propagation, making them among the safest commonly used
refrigerants.
3. What instrument is primarily used to measure refrigerant system
pressure?
A. Clamp meter
B. Thermometer
C. Manifold gauge set
D. Hygrometer
Rationale: A manifold gauge set measures both high-side and low-side
refrigerant pressures, allowing technicians to evaluate system
performance and diagnose operating conditions.
, 4. Superheat is defined as:
A. The temperature below saturation
B. The boiling point of water
C. The temperature of vapor above its saturation temperature
D. The pressure inside a recovery cylinder
Rationale: Superheat measures how much additional heat refrigerant
vapor has absorbed after completely evaporating. It helps verify proper
evaporator performance and refrigerant charge.
5. The purpose of subcooling is to ensure that:
A. Refrigerant vapor enters the expansion valve
B. The compressor remains cool
C. Liquid refrigerant reaches the metering device without flashing
D. Condenser pressure increases
Rationale: Subcooling lowers liquid refrigerant below its saturation
temperature, preventing flash gas formation before the expansion
device and improving system efficiency.
, 6. Which HVAC component raises refrigerant pressure and
temperature?
A. Expansion valve
B. Evaporator
C. Condenser
D. Compressor
Rationale: The compressor is the heart of the refrigeration cycle. It
compresses low-pressure vapor into high-pressure, high-temperature
vapor before sending it to the condenser.
7. What is the primary function of the evaporator coil?
A. Reject heat outdoors
B. Absorb heat from indoor air
C. Increase refrigerant pressure
D. Remove oil from refrigerant
Rationale: The evaporator absorbs heat from indoor air, causing
refrigerant to evaporate into vapor while cooling and dehumidifying the
conditioned space.
8. Which component meters refrigerant into the evaporator?
Examination Questions and Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary responsibility of a Georgia Conditioned Air
Contractor Class II license holder?
A. Installing only residential window air conditioners
B. Performing electrical utility work
C. Installing, servicing, and maintaining conditioned air systems of
unlimited size and capacity
D. Selling HVAC equipment exclusively
Rationale: A Georgia Conditioned Air Contractor Class II license
authorizes contractors to install, service, repair, alter, and maintain
conditioned air systems without tonnage limitations. Unlike the Class I
license, Class II has no size restrictions.
, 2. Which refrigerant safety classification identifies refrigerants with
lower toxicity and no flame propagation?
A. B2L
B. A3
C. A1
D. B3
Rationale: ASHRAE Standard 34 classifies refrigerants based on toxicity
and flammability. A1 refrigerants have low toxicity and no flame
propagation, making them among the safest commonly used
refrigerants.
3. What instrument is primarily used to measure refrigerant system
pressure?
A. Clamp meter
B. Thermometer
C. Manifold gauge set
D. Hygrometer
Rationale: A manifold gauge set measures both high-side and low-side
refrigerant pressures, allowing technicians to evaluate system
performance and diagnose operating conditions.
, 4. Superheat is defined as:
A. The temperature below saturation
B. The boiling point of water
C. The temperature of vapor above its saturation temperature
D. The pressure inside a recovery cylinder
Rationale: Superheat measures how much additional heat refrigerant
vapor has absorbed after completely evaporating. It helps verify proper
evaporator performance and refrigerant charge.
5. The purpose of subcooling is to ensure that:
A. Refrigerant vapor enters the expansion valve
B. The compressor remains cool
C. Liquid refrigerant reaches the metering device without flashing
D. Condenser pressure increases
Rationale: Subcooling lowers liquid refrigerant below its saturation
temperature, preventing flash gas formation before the expansion
device and improving system efficiency.
, 6. Which HVAC component raises refrigerant pressure and
temperature?
A. Expansion valve
B. Evaporator
C. Condenser
D. Compressor
Rationale: The compressor is the heart of the refrigeration cycle. It
compresses low-pressure vapor into high-pressure, high-temperature
vapor before sending it to the condenser.
7. What is the primary function of the evaporator coil?
A. Reject heat outdoors
B. Absorb heat from indoor air
C. Increase refrigerant pressure
D. Remove oil from refrigerant
Rationale: The evaporator absorbs heat from indoor air, causing
refrigerant to evaporate into vapor while cooling and dehumidifying the
conditioned space.
8. Which component meters refrigerant into the evaporator?
