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 classified as a hydrochlorofluorocarbon (HCFC)?
A) R-410A
B) R-22
C) R-134a
D) R-404A
CORRECT OPTION: B) R-22
RATIONALE:
R-22 is an HCFC that contains chlorine, contributing to ozone depletion. It is being phased out
under the Montreal Protocol and replaced by more environmentally friendly refrigerants.
Question 2:
What is the primary purpose of an EPA-certified refrigerant recovery unit?
A) To increase refrigerant pressure
B) To recover refrigerant for reuse or recycling
C) To monitor refrigerant levels
D) To cool the refrigerant
CORRECT OPTION: B) To recover refrigerant for reuse or recycling
RATIONALE:
An EPA-certified refrigerant recovery unit is designed to safely remove refrigerant from HVAC
systems, preventing it from being released into the atmosphere and allowing for its reuse or
recycling.
Question 3:
In terms of safety, what is the most critical action when handling refrigerants?
, A) Wearing gloves
B) Working in a confined space
C) Ensuring proper ventilation
D) Using glass containers
CORRECT OPTION: C) Ensuring proper ventilation
RATIONALE:
Proper ventilation is crucial when handling refrigerants to prevent the accumulation of harmful
gases, which can pose health risks to technicians.
Question 4:
Which refrigerant has the least impact on the ozone layer?
A) R-22
B) R-134a
C) R-410A
D) R-12
CORRECT OPTION: C) R-410A
RATIONALE:
R-410A is a hydrofluorocarbon (HFC) that has zero ozone depletion potential (ODP), making it
more environmentally friendly compared to other refrigerants.
Question 5:
When transporting refrigerant cylinders, what is not recommended?
A) Securing cylinders upright
B) Storing in a climate-controlled vehicle
C) Transporting in an open truck bed
D) Keeping cylinders away from heat sources
CORRECT OPTION: C) Transporting in an open truck bed
RATIONALE:
Transporting refrigerant cylinders in an open truck bed is unsafe because they can fall, be
exposed to extreme temperatures, or be compromised by potential leaks.
Question 6:
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 classified as a hydrochlorofluorocarbon (HCFC)?
A) R-410A
B) R-22
C) R-134a
D) R-404A
CORRECT OPTION: B) R-22
RATIONALE:
R-22 is an HCFC that contains chlorine, contributing to ozone depletion. It is being phased out
under the Montreal Protocol and replaced by more environmentally friendly refrigerants.
Question 2:
What is the primary purpose of an EPA-certified refrigerant recovery unit?
A) To increase refrigerant pressure
B) To recover refrigerant for reuse or recycling
C) To monitor refrigerant levels
D) To cool the refrigerant
CORRECT OPTION: B) To recover refrigerant for reuse or recycling
RATIONALE:
An EPA-certified refrigerant recovery unit is designed to safely remove refrigerant from HVAC
systems, preventing it from being released into the atmosphere and allowing for its reuse or
recycling.
Question 3:
In terms of safety, what is the most critical action when handling refrigerants?
, A) Wearing gloves
B) Working in a confined space
C) Ensuring proper ventilation
D) Using glass containers
CORRECT OPTION: C) Ensuring proper ventilation
RATIONALE:
Proper ventilation is crucial when handling refrigerants to prevent the accumulation of harmful
gases, which can pose health risks to technicians.
Question 4:
Which refrigerant has the least impact on the ozone layer?
A) R-22
B) R-134a
C) R-410A
D) R-12
CORRECT OPTION: C) R-410A
RATIONALE:
R-410A is a hydrofluorocarbon (HFC) that has zero ozone depletion potential (ODP), making it
more environmentally friendly compared to other refrigerants.
Question 5:
When transporting refrigerant cylinders, what is not recommended?
A) Securing cylinders upright
B) Storing in a climate-controlled vehicle
C) Transporting in an open truck bed
D) Keeping cylinders away from heat sources
CORRECT OPTION: C) Transporting in an open truck bed
RATIONALE:
Transporting refrigerant cylinders in an open truck bed is unsafe because they can fall, be
exposed to extreme temperatures, or be compromised by potential leaks.
Question 6:
