EPA 608 EXAM STUDY GUIDE WITH
QUESTIONS AND CORRECT ANSWERS
2026/2027 LATEST UPDATE
what year was the Montreal Protocol put in place? - ✔✔✔ANSWER-
1989.
refrigerant recovery equipment should be checked for (blank) on a daily
basis? - ✔✔✔ANSWER-Refrigerant leaks and oil levels.
should recovery machines be used on equipment that contains
hydrogen? - ✔✔✔ANSWER-NO.
which purity test is used to determine the type of refrigerant? - ✔
✔✔ANSWER-ARI 700.
what type of unit only requires ONE service connection? -
✔✔✔ANSWER-self-contained recovery units.
1 | Pa g e
,air will cause (blank) discharge pressures in a refrigeration system. - ✔
✔✔ANSWER-Higher.
a strong odor is around during the recovery process. what is most likely
the cause of this? - ✔✔✔ANSWER-A compressor burnout. what is the
best way (position) to transport refrigeration cylinders? - ✔
✔✔ANSWER-Upright.
you can only accurately read refrigerant pressure with a stable (blank)? -
✔✔✔ANSWER-Temperature.
the state of the refrigerant entering the metering device is? - ✔
✔✔ANSWER-A subcooled high pressure liquid.
what type of refrigerant is used in VERY high-pressure appliances? -
✔ ✔✔ANSWER-R-503
what type of refrigerant is used in MEDIUM pressure appliances? -
✔ ✔✔ANSWER-R-500
2 | Pa g e
, what type of refrigerant is used in HIGH pressure appliances? -
✔ ✔✔ANSWER-R-410A and R-22
what device is located at the END of the liquid line? - ✔✔✔ANSWER-
The expansion device.
what type of refrigerants are the LEAST harmful to the ozone layer? - ✔
✔✔ANSWER-HFC refrigerants.
How much money does the EPA offer to individuals who report
information about others who vent refrigerants into the
atmosphere? - ✔✔✔ANSWER-$10,000.
which class of refrigerants does R-22 fall into? - ✔✔✔ANSWER-The
HCFC class. (hydrochloroflurocarbons)
which gas should be used when checking for leaks in various systems? -
✔✔✔ANSWER-Nitrogen.
3 | Pa g e
QUESTIONS AND CORRECT ANSWERS
2026/2027 LATEST UPDATE
what year was the Montreal Protocol put in place? - ✔✔✔ANSWER-
1989.
refrigerant recovery equipment should be checked for (blank) on a daily
basis? - ✔✔✔ANSWER-Refrigerant leaks and oil levels.
should recovery machines be used on equipment that contains
hydrogen? - ✔✔✔ANSWER-NO.
which purity test is used to determine the type of refrigerant? - ✔
✔✔ANSWER-ARI 700.
what type of unit only requires ONE service connection? -
✔✔✔ANSWER-self-contained recovery units.
1 | Pa g e
,air will cause (blank) discharge pressures in a refrigeration system. - ✔
✔✔ANSWER-Higher.
a strong odor is around during the recovery process. what is most likely
the cause of this? - ✔✔✔ANSWER-A compressor burnout. what is the
best way (position) to transport refrigeration cylinders? - ✔
✔✔ANSWER-Upright.
you can only accurately read refrigerant pressure with a stable (blank)? -
✔✔✔ANSWER-Temperature.
the state of the refrigerant entering the metering device is? - ✔
✔✔ANSWER-A subcooled high pressure liquid.
what type of refrigerant is used in VERY high-pressure appliances? -
✔ ✔✔ANSWER-R-503
what type of refrigerant is used in MEDIUM pressure appliances? -
✔ ✔✔ANSWER-R-500
2 | Pa g e
, what type of refrigerant is used in HIGH pressure appliances? -
✔ ✔✔ANSWER-R-410A and R-22
what device is located at the END of the liquid line? - ✔✔✔ANSWER-
The expansion device.
what type of refrigerants are the LEAST harmful to the ozone layer? - ✔
✔✔ANSWER-HFC refrigerants.
How much money does the EPA offer to individuals who report
information about others who vent refrigerants into the
atmosphere? - ✔✔✔ANSWER-$10,000.
which class of refrigerants does R-22 fall into? - ✔✔✔ANSWER-The
HCFC class. (hydrochloroflurocarbons)
which gas should be used when checking for leaks in various systems? -
✔✔✔ANSWER-Nitrogen.
3 | Pa g e
