LOUISIANA CLASS D
"CHAUFFEUR'S"
LICENSE TEST FINAL TEST 2026
QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Low GWP training purpose.
Answer: Prepares technicians for safe handling of flammable/mildly
flammable refrigerants and for Esco's Safe Refrigerant Handling
Certification.
◍ What is the purpose of the A2L Refrigerant compliance requirement?.
Answer: To prepare for the Z-51 exam for the Certificate of Qualification
for Refrigerating System Operating Engineer (RSOE).
◍ When will the new standards for manufacturing refrigerants go into effect?.
Answer: January 1, 2025.
◍ Refrigerants dangers.
Answer: Displace oxygen (asphyxiation risk), can be toxic, and under
pressure (rupture hazard).
◍ What act was passed to help transition to environmentally friendly
refrigerants?.
Answer: The American Innovation and Manufacturing (AIM) Act.
◍ What does A2L stand for?.
Answer: A2L refers to refrigerants that are mildly flammable, low toxicity,
and low global warming potential.
◍ Refrigerant cylinder storage temperature.
, Answer: 125°F
◍ What is Global Warming Potential (GWP)?.
Answer: GWP is a measure of how much heat a refrigerant traps in the
atmosphere compared to carbon dioxide.
◍ What GWP is generally considered acceptable for refrigerants?.
Answer: A GWP of 2500 or less.
◍ What are the hazards associated with refrigerants?.
Answer: Combustion byproducts can include hydrogen fluoride, oxygen
deprivation in enclosed spaces, and frostbite from liquid refrigerant.
◍ Max fill for refillable recovery tanks.
Answer: 80% of capacity
◍ Requirements on site for flammable refrigerants.
Answer: Ventilation and a Class B fire extinguisher
◍ A2L cylinder storage in service vehicles.
Answer: Horizontally, with relief valve at 12 o'clock, securely fastened
◍ DOT transport requirements for flammable refrigerants.
Answer: Fire extinguisher, no smoking within 25 ft, written inventory,
possible placards/ventilation
◍ Pre-work jobsite checks.
Answer: Check for hazards, use lockout/tagout, ventilate area
◍ What are the environmental benefits of A2L refrigerants?.
Answer: They have low GWP, are ozone-friendly, support climate goals, are
highly efficient, and lead to cost savings.
◍ What is the role of the
U. S. Environmental Protection Agency (EPA) regarding new refrigerants?.
Answer: The EPA must approve new refrigerants through the SNAP
process, considering safety, toxicity, flammability, and environmental
factors.
, ◍ PPE purpose.
Answer: Reduces (but doesn't eliminate) risk of injury
◍ Proper tool requirements for flammable refrigerants.
Answer: No arc/spark, rated for flammable refrigerants, and grounded
system
◍ What is the significance of the AIM Act?.
Answer: It helps industries transition to more environmentally friendly
refrigerants.
◍ ODP and GWP meanings.
Answer: ODP = Ozone Depletion Potential; GWP = Global Warming
Potential
◍ Examples of refrigerants and their GWP.
Answer: R-410A = 2088; R-404A = 3920; R-1234yf = <1; R-290 = 3
◍ Key refrigeration processes.
Answer: Expansion → Evaporation → Compression → Condensation
◍ High- and low-pressure sides.
Answer: High = Red; Low = Blue
◍ What is the phasedown process for R-410A?.
Answer: The phasedown process began in 2022, and production of new
equipment using R-410A will be prohibited in 2025.
◍ Superheat and subcooling definitions.
Answer: Superheat = Vapor temp − saturation temp; Subcooling =
Saturation temp − liquid temp
◍ What are the characteristics of lower flammability A2L refrigerants?.
Answer: They have a low flame speed (BV<10cm/sec) and lower heat of
combustion (HOC).
◍ Standard airflow across evaporator.
Answer: 400 CFM/ton
"CHAUFFEUR'S"
LICENSE TEST FINAL TEST 2026
QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Low GWP training purpose.
Answer: Prepares technicians for safe handling of flammable/mildly
flammable refrigerants and for Esco's Safe Refrigerant Handling
Certification.
◍ What is the purpose of the A2L Refrigerant compliance requirement?.
Answer: To prepare for the Z-51 exam for the Certificate of Qualification
for Refrigerating System Operating Engineer (RSOE).
◍ When will the new standards for manufacturing refrigerants go into effect?.
Answer: January 1, 2025.
◍ Refrigerants dangers.
Answer: Displace oxygen (asphyxiation risk), can be toxic, and under
pressure (rupture hazard).
◍ What act was passed to help transition to environmentally friendly
refrigerants?.
Answer: The American Innovation and Manufacturing (AIM) Act.
◍ What does A2L stand for?.
Answer: A2L refers to refrigerants that are mildly flammable, low toxicity,
and low global warming potential.
◍ Refrigerant cylinder storage temperature.
, Answer: 125°F
◍ What is Global Warming Potential (GWP)?.
Answer: GWP is a measure of how much heat a refrigerant traps in the
atmosphere compared to carbon dioxide.
◍ What GWP is generally considered acceptable for refrigerants?.
Answer: A GWP of 2500 or less.
◍ What are the hazards associated with refrigerants?.
Answer: Combustion byproducts can include hydrogen fluoride, oxygen
deprivation in enclosed spaces, and frostbite from liquid refrigerant.
◍ Max fill for refillable recovery tanks.
Answer: 80% of capacity
◍ Requirements on site for flammable refrigerants.
Answer: Ventilation and a Class B fire extinguisher
◍ A2L cylinder storage in service vehicles.
Answer: Horizontally, with relief valve at 12 o'clock, securely fastened
◍ DOT transport requirements for flammable refrigerants.
Answer: Fire extinguisher, no smoking within 25 ft, written inventory,
possible placards/ventilation
◍ Pre-work jobsite checks.
Answer: Check for hazards, use lockout/tagout, ventilate area
◍ What are the environmental benefits of A2L refrigerants?.
Answer: They have low GWP, are ozone-friendly, support climate goals, are
highly efficient, and lead to cost savings.
◍ What is the role of the
U. S. Environmental Protection Agency (EPA) regarding new refrigerants?.
Answer: The EPA must approve new refrigerants through the SNAP
process, considering safety, toxicity, flammability, and environmental
factors.
, ◍ PPE purpose.
Answer: Reduces (but doesn't eliminate) risk of injury
◍ Proper tool requirements for flammable refrigerants.
Answer: No arc/spark, rated for flammable refrigerants, and grounded
system
◍ What is the significance of the AIM Act?.
Answer: It helps industries transition to more environmentally friendly
refrigerants.
◍ ODP and GWP meanings.
Answer: ODP = Ozone Depletion Potential; GWP = Global Warming
Potential
◍ Examples of refrigerants and their GWP.
Answer: R-410A = 2088; R-404A = 3920; R-1234yf = <1; R-290 = 3
◍ Key refrigeration processes.
Answer: Expansion → Evaporation → Compression → Condensation
◍ High- and low-pressure sides.
Answer: High = Red; Low = Blue
◍ What is the phasedown process for R-410A?.
Answer: The phasedown process began in 2022, and production of new
equipment using R-410A will be prohibited in 2025.
◍ Superheat and subcooling definitions.
Answer: Superheat = Vapor temp − saturation temp; Subcooling =
Saturation temp − liquid temp
◍ What are the characteristics of lower flammability A2L refrigerants?.
Answer: They have a low flame speed (BV<10cm/sec) and lower heat of
combustion (HOC).
◍ Standard airflow across evaporator.
Answer: 400 CFM/ton
