TRADE & TECHNICAL LICENSES HVAC EPA 608
REFRIGERANT TYPES & HANDLING DEEP DIVE PRACTICE
EXAM 2026 | COMPLETE STUDY GUIDE WITH VERIFIED
QUESTIONS & DETAILED RATIONALES | R-22, R-410A, R-
134a, REFRIGERANT STORAGE & TRANSPORT, RECOVERY
CYLINDER USAGE, SAFETY PROCEDURES & EPA
COMPLIANCE
Question 1: Which of the following refrigerants is being phased out due to its ozone-
depleting properties?
• A) R-410A
• B) R-22 (CORRECT OPTION)
• C) R-134a
• D) R-404A
RATIONALE: R-22 is a hydrochlorofluorocarbon (HCFC) which contributes to ozone
depletion. As a result, its production and import are being phased out under the Montreal
Protocol.
Question 2: R-410A is primarily used in which type of systems?
• A) Residential refrigerators
• B) Commercial freezers
• C) Air conditioning systems (CORRECT OPTION)
• D) Automotive air conditioning
RATIONALE: R-410A is widely used in air conditioning systems due to its high efficiency
and lower environmental impact compared to older refrigerants like R-22.
Question 3: What is the primary safety concern when handling refrigerants?
• A) Electrical shock
• B) Fire hazards
• C) Asphyxiation and frostbite (CORRECT OPTION)
• D) Chemical burns
, RATIONALE: Refrigerants can displace oxygen and cause asphyxiation, and they can also
cause frostbite upon contact with skin due to their low temperatures.
Question 4: When transporting recovery cylinders, what is the most important
consideration?
• A) Weight of the cylinder
• B) Proper labeling and secure fastening (CORRECT OPTION)
• C) Color of the cylinder
• D) Size of the cylinder
RATIONALE: Proper labeling and secure fastening are critical to ensure safety and
compliance during transportation to prevent accidental release or leaks.
Question 5: The EPA requires that technicians maintain records of refrigerant use and
recovery for how long?
• A) 1 year
• B) 3 years
• C) 5 years (CORRECT OPTION)
• D) 10 years
RATIONALE: The EPA mandates that records of refrigerant use and recovery must be
maintained for a minimum of three years to ensure compliance and track environmental impact.
Question 6: What type of refrigerant is R-134a classified as?
• A) CFC
• B) HCFC
• C) HFC (CORRECT OPTION)
• D) HFO
RATIONALE: R-134a is a hydrofluorocarbon (HFC) and is considered to have a lower
environmental impact compared to CFCs and HCFCs.
REFRIGERANT TYPES & HANDLING DEEP DIVE PRACTICE
EXAM 2026 | COMPLETE STUDY GUIDE WITH VERIFIED
QUESTIONS & DETAILED RATIONALES | R-22, R-410A, R-
134a, REFRIGERANT STORAGE & TRANSPORT, RECOVERY
CYLINDER USAGE, SAFETY PROCEDURES & EPA
COMPLIANCE
Question 1: Which of the following refrigerants is being phased out due to its ozone-
depleting properties?
• A) R-410A
• B) R-22 (CORRECT OPTION)
• C) R-134a
• D) R-404A
RATIONALE: R-22 is a hydrochlorofluorocarbon (HCFC) which contributes to ozone
depletion. As a result, its production and import are being phased out under the Montreal
Protocol.
Question 2: R-410A is primarily used in which type of systems?
• A) Residential refrigerators
• B) Commercial freezers
• C) Air conditioning systems (CORRECT OPTION)
• D) Automotive air conditioning
RATIONALE: R-410A is widely used in air conditioning systems due to its high efficiency
and lower environmental impact compared to older refrigerants like R-22.
Question 3: What is the primary safety concern when handling refrigerants?
• A) Electrical shock
• B) Fire hazards
• C) Asphyxiation and frostbite (CORRECT OPTION)
• D) Chemical burns
, RATIONALE: Refrigerants can displace oxygen and cause asphyxiation, and they can also
cause frostbite upon contact with skin due to their low temperatures.
Question 4: When transporting recovery cylinders, what is the most important
consideration?
• A) Weight of the cylinder
• B) Proper labeling and secure fastening (CORRECT OPTION)
• C) Color of the cylinder
• D) Size of the cylinder
RATIONALE: Proper labeling and secure fastening are critical to ensure safety and
compliance during transportation to prevent accidental release or leaks.
Question 5: The EPA requires that technicians maintain records of refrigerant use and
recovery for how long?
• A) 1 year
• B) 3 years
• C) 5 years (CORRECT OPTION)
• D) 10 years
RATIONALE: The EPA mandates that records of refrigerant use and recovery must be
maintained for a minimum of three years to ensure compliance and track environmental impact.
Question 6: What type of refrigerant is R-134a classified as?
• A) CFC
• B) HCFC
• C) HFC (CORRECT OPTION)
• D) HFO
RATIONALE: R-134a is a hydrofluorocarbon (HFC) and is considered to have a lower
environmental impact compared to CFCs and HCFCs.
