Florida HVAC Technician Certification
Exam With Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass Graded
A+/2026 /Latest Update/Instant
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1. What type of refrigerant is commonly used in residential air conditioning
systems today?
A. R-11
B. R-410A
C. R-22
D. R-134
Rationale: R-410A is the standard refrigerant for new residential AC systems
because it does not deplete the ozone layer and operates at higher efficiency
than older R-22 systems.
2. What is the primary purpose of a compressor in an HVAC system?
A. To filter air
B. To circulate refrigerant through the system
C. To cool the condenser coil
D. To remove humidity
Rationale: The compressor increases the pressure of the refrigerant, allowing it
to circulate through the system and transfer heat.
3. Which safety device protects an HVAC system from excessively high
pressure?
A. Thermostat
, B. Expansion valve
C. High-pressure switch
D. Low-pressure switch
Rationale: High-pressure switches shut off the compressor when the system
pressure exceeds safe limits to prevent damage.
4. What does SEER stand for?
A. Standard Energy Efficiency Rating
B. Seasonal Energy Efficiency Ratio
C. Specific Energy Emission Rating
D. System Efficiency Evaluation Ratio
Rationale: SEER measures the cooling output of an AC system over a typical
cooling season divided by the energy it consumes.
5. What is the function of the expansion valve in a refrigeration system?
A. To compress refrigerant
B. To reduce refrigerant pressure and temperature
C. To circulate air
D. To increase system pressure
Rationale: The expansion valve allows refrigerant to expand, lowering its
pressure and temperature for heat absorption in the evaporator coil.
6. Which tool is used to measure refrigerant pressure?
A. Thermometer
B. Anemometer
C. Manifold gauge set
D. Multimeter
Rationale: A manifold gauge set allows technicians to measure and monitor
both high and low refrigerant pressures safely.
7. What type of airflow is most efficient for a forced-air system?
A. Turbulent airflow
B. Laminar airflow
C. Reversed airflow
D. Random airflow
, Rationale: Laminar airflow reduces friction and resistance, allowing the system
to operate more efficiently.
8. What is the primary role of the evaporator coil?
A. To reject heat
B. To absorb heat from indoor air
C. To compress refrigerant
D. To circulate air outside
Rationale: The evaporator coil absorbs heat from the indoor air as the
refrigerant evaporates, cooling the air in the process.
9. In HVAC systems, what is superheat?
A. The temperature of the condenser coil
B. The difference between ambient air and refrigerant temperature
C. The temperature increase of refrigerant vapor above its saturation
temperature
D. The temperature of liquid refrigerant leaving the condenser
Rationale: Superheat indicates how much the refrigerant vapor has been
heated above its boiling point, ensuring no liquid enters the compressor.
10.What is the recommended minimum clearance around an outdoor
condenser unit?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
Rationale: A minimum of 24 inches around the unit allows proper airflow and
maintenance access.
11.What is the primary hazard associated with R-22 refrigerant?
A. Fire hazard
B. Ozone depletion
C. Electrical shock
D. Mold growth
Rationale: R-22 is an ozone-depleting substance and is being phased out under
environmental regulations.
Exam With Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass Graded
A+/2026 /Latest Update/Instant
Download Pdf
1. What type of refrigerant is commonly used in residential air conditioning
systems today?
A. R-11
B. R-410A
C. R-22
D. R-134
Rationale: R-410A is the standard refrigerant for new residential AC systems
because it does not deplete the ozone layer and operates at higher efficiency
than older R-22 systems.
2. What is the primary purpose of a compressor in an HVAC system?
A. To filter air
B. To circulate refrigerant through the system
C. To cool the condenser coil
D. To remove humidity
Rationale: The compressor increases the pressure of the refrigerant, allowing it
to circulate through the system and transfer heat.
3. Which safety device protects an HVAC system from excessively high
pressure?
A. Thermostat
, B. Expansion valve
C. High-pressure switch
D. Low-pressure switch
Rationale: High-pressure switches shut off the compressor when the system
pressure exceeds safe limits to prevent damage.
4. What does SEER stand for?
A. Standard Energy Efficiency Rating
B. Seasonal Energy Efficiency Ratio
C. Specific Energy Emission Rating
D. System Efficiency Evaluation Ratio
Rationale: SEER measures the cooling output of an AC system over a typical
cooling season divided by the energy it consumes.
5. What is the function of the expansion valve in a refrigeration system?
A. To compress refrigerant
B. To reduce refrigerant pressure and temperature
C. To circulate air
D. To increase system pressure
Rationale: The expansion valve allows refrigerant to expand, lowering its
pressure and temperature for heat absorption in the evaporator coil.
6. Which tool is used to measure refrigerant pressure?
A. Thermometer
B. Anemometer
C. Manifold gauge set
D. Multimeter
Rationale: A manifold gauge set allows technicians to measure and monitor
both high and low refrigerant pressures safely.
7. What type of airflow is most efficient for a forced-air system?
A. Turbulent airflow
B. Laminar airflow
C. Reversed airflow
D. Random airflow
, Rationale: Laminar airflow reduces friction and resistance, allowing the system
to operate more efficiently.
8. What is the primary role of the evaporator coil?
A. To reject heat
B. To absorb heat from indoor air
C. To compress refrigerant
D. To circulate air outside
Rationale: The evaporator coil absorbs heat from the indoor air as the
refrigerant evaporates, cooling the air in the process.
9. In HVAC systems, what is superheat?
A. The temperature of the condenser coil
B. The difference between ambient air and refrigerant temperature
C. The temperature increase of refrigerant vapor above its saturation
temperature
D. The temperature of liquid refrigerant leaving the condenser
Rationale: Superheat indicates how much the refrigerant vapor has been
heated above its boiling point, ensuring no liquid enters the compressor.
10.What is the recommended minimum clearance around an outdoor
condenser unit?
A. 6 inches
B. 12 inches
C. 24 inches
D. 36 inches
Rationale: A minimum of 24 inches around the unit allows proper airflow and
maintenance access.
11.What is the primary hazard associated with R-22 refrigerant?
A. Fire hazard
B. Ozone depletion
C. Electrical shock
D. Mold growth
Rationale: R-22 is an ozone-depleting substance and is being phased out under
environmental regulations.
