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Florida Air Conditioning Class A Contractor Exam
QUESTIONS AND VERIFIED ANSWERS LATEST
UPDATE
Florida Air Conditioning Class A Contractor Exam
Exam Coverage (Summarized Point Form)
• Florida Statutes & Rules: Chapter 489 (Contracting), Chapter 455 (DBPR), Rule 61G15 (Florida
Building Code) and 61G6 (Construction Industry Licensing Board)
• Florida Building Code (FBC), Mechanical: 8th Edition (2020/2023 as adopted), load calculations
(Manual J), duct design (Manual D), equipment sizing
• Business & Finance: Business organizations (sole prop, partnership, corp), lien law (Chapter
713), workers’ comp (Chapter 440), employment law, insurance, bonds, accounting (P&L,
balance sheet)
• HVAC Theory: Refrigeration cycle (evaporator, compressor, condenser, metering device),
superheat, subcooling, compression ratio, psychrometrics (dry-bulb, wet-bulb, RH, enthalpy)
• Electrical: Wiring methods (NEC 2023), conductors, overcurrent protection, motors, contactors,
relays, capacitors, grounding, control wiring (24V), thermostat wiring
• Air Distribution: Duct sizing (friction loss, velocity), supply/return grilles, dampers, duct
insulation, plenums, air filters (MERV)
• Refrigerants: EPA Section 608 (certification required), phase-down (R-22, R-410A, A2L),
handling, recovery, recycling, leak repair requirements
• Load Calculations: Residential (Manual J), commercial (Manual N), heat gain/loss,
sensible/latent loads, infiltration, ventilation (ASHRAE 62.2)
• Equipment & Components: AC units (split, package), heat pumps (air-source, geothermal), gas
furnaces, air handlers, coils, TXV/piston, compressors (recip, scroll, rotary), condensers
• Testing & Balancing: Airflow measurement (CFM), static pressure, temperature drop,
refrigerant pressures, charging procedures (subcooling for TXV, superheat for fixed orifice)
• Ventilation & Indoor Air Quality: Mechanical ventilation, exhaust fans, make-up air, IAQ
standards, filtration, CO/CO₂ monitoring
• Energy Efficiency: SEER (minimum 15 in FL), EER, HSPF, AFUE, Energy Code (FBC Energy
Conservation), duct leakage testing
• Safety: OSHA standards (ladder safety, electrical safety, refrigerant handling, PPE), job site
safety, fire prevention
• Contract & Project Management: Bidding, contracts (fixed price, T&M), change orders,
scheduling, permits, inspections
• Licensing Requirements: Class A vs. Class B (A: any size system; B: limited to 25 tons/500,000
BTU), experience requirements (4 years), exam application ($222), license fees
• Commercial Systems: Larger tonnage, chillers (air-cooled, water-cooled), cooling towers,
VRF/VRV systems, rooftop units, make-up air
Questions 1–250 (Random Order, with Rationales)
Question 1
A Florida Class A Air Conditioning Contractor can perform work on a chilled water system with a chiller
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capacity of 300 tons. A Class B contractor is limited to a maximum of:
A) 10 tons
B) 15 tons
C) 25 tons (and 500,000 BTU heating)
D) 50 tons
Answer: C – Rule 61G6-12.002: Class B limited to 25 tons cooling and 500,000 BTU heating; Class A
unlimited.
Question 2
Under Florida Statute 713 (Construction Lien Law), a subcontractor who has not been paid by the
general contractor must record a Claim of Lien within how many days of final furnishing labor/materials?
A) 30 days
B) 45 days
C) 60 days
D) 90 days
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Answer: D – F.S. 713.08 requires a Claim of Lien to be recorded within 90 days of last furnishing for
subcontractors and material suppliers not in privity with the owner.
Question 3
What is the minimum SEER rating for a new residential split system air conditioner installed in Florida
under the Florida Building Code (Energy Conservation) and federal law?
A) 13 SEER
B) 14 SEER (federal minimum for southern region)
C) 15 SEER (Florida effective 2023 for split systems)
D) 18 SEER
Answer: C – Florida adopted 15 SEER as minimum for residential split systems effective 2023; federal
southern region minimum is 14 SEER, but Florida requires 15.
Question 4
A piston (fixed orifice) metering device requires that a technician charge the system by measuring:
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A) Subcooling
B) Superheat
C) Compression ratio
D) Oil pressure
Answer: B – Fixed orifice systems must be charged using superheat because the device does not
respond to load changes; TXV systems use subcooling.
Question 5
What is the primary purpose of a suction line accumulator?
A) Increase refrigerant velocity
B) Store excess oil
C) Prevent liquid refrigerant from entering the compressor
D) Filter debris
Answer: C – The accumulator prevents liquid slugging, which can damage compressor valves.
Florida Air Conditioning Class A Contractor Exam
QUESTIONS AND VERIFIED ANSWERS LATEST
UPDATE
Florida Air Conditioning Class A Contractor Exam
Exam Coverage (Summarized Point Form)
• Florida Statutes & Rules: Chapter 489 (Contracting), Chapter 455 (DBPR), Rule 61G15 (Florida
Building Code) and 61G6 (Construction Industry Licensing Board)
• Florida Building Code (FBC), Mechanical: 8th Edition (2020/2023 as adopted), load calculations
(Manual J), duct design (Manual D), equipment sizing
• Business & Finance: Business organizations (sole prop, partnership, corp), lien law (Chapter
713), workers’ comp (Chapter 440), employment law, insurance, bonds, accounting (P&L,
balance sheet)
• HVAC Theory: Refrigeration cycle (evaporator, compressor, condenser, metering device),
superheat, subcooling, compression ratio, psychrometrics (dry-bulb, wet-bulb, RH, enthalpy)
• Electrical: Wiring methods (NEC 2023), conductors, overcurrent protection, motors, contactors,
relays, capacitors, grounding, control wiring (24V), thermostat wiring
• Air Distribution: Duct sizing (friction loss, velocity), supply/return grilles, dampers, duct
insulation, plenums, air filters (MERV)
• Refrigerants: EPA Section 608 (certification required), phase-down (R-22, R-410A, A2L),
handling, recovery, recycling, leak repair requirements
• Load Calculations: Residential (Manual J), commercial (Manual N), heat gain/loss,
sensible/latent loads, infiltration, ventilation (ASHRAE 62.2)
• Equipment & Components: AC units (split, package), heat pumps (air-source, geothermal), gas
furnaces, air handlers, coils, TXV/piston, compressors (recip, scroll, rotary), condensers
• Testing & Balancing: Airflow measurement (CFM), static pressure, temperature drop,
refrigerant pressures, charging procedures (subcooling for TXV, superheat for fixed orifice)
• Ventilation & Indoor Air Quality: Mechanical ventilation, exhaust fans, make-up air, IAQ
standards, filtration, CO/CO₂ monitoring
• Energy Efficiency: SEER (minimum 15 in FL), EER, HSPF, AFUE, Energy Code (FBC Energy
Conservation), duct leakage testing
• Safety: OSHA standards (ladder safety, electrical safety, refrigerant handling, PPE), job site
safety, fire prevention
• Contract & Project Management: Bidding, contracts (fixed price, T&M), change orders,
scheduling, permits, inspections
• Licensing Requirements: Class A vs. Class B (A: any size system; B: limited to 25 tons/500,000
BTU), experience requirements (4 years), exam application ($222), license fees
• Commercial Systems: Larger tonnage, chillers (air-cooled, water-cooled), cooling towers,
VRF/VRV systems, rooftop units, make-up air
Questions 1–250 (Random Order, with Rationales)
Question 1
A Florida Class A Air Conditioning Contractor can perform work on a chilled water system with a chiller
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capacity of 300 tons. A Class B contractor is limited to a maximum of:
A) 10 tons
B) 15 tons
C) 25 tons (and 500,000 BTU heating)
D) 50 tons
Answer: C – Rule 61G6-12.002: Class B limited to 25 tons cooling and 500,000 BTU heating; Class A
unlimited.
Question 2
Under Florida Statute 713 (Construction Lien Law), a subcontractor who has not been paid by the
general contractor must record a Claim of Lien within how many days of final furnishing labor/materials?
A) 30 days
B) 45 days
C) 60 days
D) 90 days
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Answer: D – F.S. 713.08 requires a Claim of Lien to be recorded within 90 days of last furnishing for
subcontractors and material suppliers not in privity with the owner.
Question 3
What is the minimum SEER rating for a new residential split system air conditioner installed in Florida
under the Florida Building Code (Energy Conservation) and federal law?
A) 13 SEER
B) 14 SEER (federal minimum for southern region)
C) 15 SEER (Florida effective 2023 for split systems)
D) 18 SEER
Answer: C – Florida adopted 15 SEER as minimum for residential split systems effective 2023; federal
southern region minimum is 14 SEER, but Florida requires 15.
Question 4
A piston (fixed orifice) metering device requires that a technician charge the system by measuring:
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A) Subcooling
B) Superheat
C) Compression ratio
D) Oil pressure
Answer: B – Fixed orifice systems must be charged using superheat because the device does not
respond to load changes; TXV systems use subcooling.
Question 5
What is the primary purpose of a suction line accumulator?
A) Increase refrigerant velocity
B) Store excess oil
C) Prevent liquid refrigerant from entering the compressor
D) Filter debris
Answer: C – The accumulator prevents liquid slugging, which can damage compressor valves.
