EPA 608 EXAM LATEST ACTUAL EXAM
2026 QUESTIONS AND DETAILED
VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE
GRADED A+ BY EXPERTS LATEST
VERSION
"When do we need to use safety eyewear and butyl-lined gloves?
Answer
When testing the quality of refrigerant
When moving refrigerant cylinders
When connecting and disconnecting hoses
•When taring the refrigerant scale - CORRECT ANSWER=>When connecting and disconnecting
hoses"
"Which of the following are areas that do not need to be marked when it comes to appliances
that contain HCs?
Answer
Outside the refrigerator
Evaporators
Exposed tubing
Inside refrigerator door - CORRECT ANSWER=>Inside refrigerator door"
"Which of the following is needed to protect your hands from refrigerant burns?
Answer
Cotton gloves
Butyl-lined gloves
Triple layered gloves
1|Page
,Any of the above - CORRECT ANSWER=>Butyl-lined gloves"
"How would you remove moisture from refrigerants in a system?
Answer
Purge the condenser
Drain the oil separator
Reduce water flow to the condenser
Use a filter drier - CORRECT ANSWER=>Use a filter drier"
"What are refrigeration and air-conditioning compressor heaters used for?
Answer
To reduce the amount of refrigerant in the oil
To prevent refrigerant vaporization
To reduce the amount of entrained water inthe receiver
To prevent acid pitting - CORRECT ANSWER=>To reduce the amount of refrigerant in the oil"
"What is a sight glass useful for?
Answer
Determining the type of refrigerant
Checking for moisture in refrigerant
Providing sub-cooling
Determining the type of oil used - CORRECT ANSWER=>Checking for moisture in the refrigerant"
"What is the easiest way to check the type of refrigerant used in a 60 ton packaged rooftop
unit?
Answer
Look at the unit nameplate
Use your service gauge set and a PT chart
Ask the owner
Measure the condenser pressure - CORRECT ANSWER=>Look at the unit name plate"
"What is the state of the refrigerant when it's leaving the condenser coils into a receiver tank?
Answer
Low Pressure Liquid
Low Pressure Vapor
High Pressure Liquid
High Pressure Vapor - CORRECT ANSWER=>High pressure liquid"
2|Page
,"What will backseating a suction shut-off valve close?
Answer
Suction line and compressor port
Compressor and gauge port
Compressor port
Gauge port - CORRECT ANSWER=>gauge port"
"Which of the following components is located just before the compressor?
Answer
Receiver
Accumulator
Condenser coils
TEV - CORRECT ANSWER=>Accumulator"
"Which of the following refrigerants is not used in Type lI systems?
Answer
R-407C
R-407A
R-245fa
R-22 - CORRECT ANSWER=>R-245fa"
"Which of the following refrigerants would be used in a low-pressure appliance?
Answer
R-22
R-123
R-410A
R-407A - CORRECT ANSWER=>R-123"
"What is the best proof that CFC's are in the stratosphere? - CORRECT ANSWER=>The
measurement of CFC's in air samples from the stratosphere."
"Which type of refrigerant is the most harmful to the stratospheric ozone? - CORRECT
ANSWER=>Refrigerants containing Bromine."
"It is necessary to place a refrigerant label on what? - CORRECT ANSWER=>A refrigerant cylinder
which is being returned for reclaiming."
3|Page
, "When transporting cylinders containing used refrigerant, the DOT requires that you what? -
CORRECT ANSWER=>Attach DOT classification tags."
"Before you dispose of any system containing a refrigerant, you must? - CORRECT
ANSWER=>Recover the refrigerant."
"In general, blended refrigerants should be charged? - CORRECT ANSWER=>As a liquid."
"Refrigerant entering the compressor of a refrigeration system is a? - CORRECT
ANSWER=>Superheated vapor."
"__________ refers to the process of cleaning refrigerants by oil separation & single or multiple
passes through filter-driers, which reduce moisture & acidity? - CORRECT ANSWER=>Recycling"
"When a system will not hold a vacuum after it has been evacuated, then? - CORRECT
ANSWER=>The system may be leaking."
"Which gas(es) would cause the LEAST damage to the environment during a leak check? -
CORRECT ANSWER=>Dry Nitrogen"
"All recovery equipment currently being made is required to have what? - CORRECT
ANSWER=>An EPA approved certification label."
“When moisture exists in an operating system, what is most likely to occur? - CORRECT
ANSWER=>Acid will form."
"What factor(s) affects the speed of evacuation? - CORRECT ANSWER=>1) The size of the
equipment being evacuated.
2)The ambient temperature.
3) The amount of moisture in the system"
"A system is considered dehydrated when? - CORRECT ANSWER=>The vacuum indicator shows
you have reached & held the required finished vacuum."
"The over-evacuation of a system: - CORRECT ANSWER=>Does not occur."
4|Page
2026 QUESTIONS AND DETAILED
VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE
GRADED A+ BY EXPERTS LATEST
VERSION
"When do we need to use safety eyewear and butyl-lined gloves?
Answer
When testing the quality of refrigerant
When moving refrigerant cylinders
When connecting and disconnecting hoses
•When taring the refrigerant scale - CORRECT ANSWER=>When connecting and disconnecting
hoses"
"Which of the following are areas that do not need to be marked when it comes to appliances
that contain HCs?
Answer
Outside the refrigerator
Evaporators
Exposed tubing
Inside refrigerator door - CORRECT ANSWER=>Inside refrigerator door"
"Which of the following is needed to protect your hands from refrigerant burns?
Answer
Cotton gloves
Butyl-lined gloves
Triple layered gloves
1|Page
,Any of the above - CORRECT ANSWER=>Butyl-lined gloves"
"How would you remove moisture from refrigerants in a system?
Answer
Purge the condenser
Drain the oil separator
Reduce water flow to the condenser
Use a filter drier - CORRECT ANSWER=>Use a filter drier"
"What are refrigeration and air-conditioning compressor heaters used for?
Answer
To reduce the amount of refrigerant in the oil
To prevent refrigerant vaporization
To reduce the amount of entrained water inthe receiver
To prevent acid pitting - CORRECT ANSWER=>To reduce the amount of refrigerant in the oil"
"What is a sight glass useful for?
Answer
Determining the type of refrigerant
Checking for moisture in refrigerant
Providing sub-cooling
Determining the type of oil used - CORRECT ANSWER=>Checking for moisture in the refrigerant"
"What is the easiest way to check the type of refrigerant used in a 60 ton packaged rooftop
unit?
Answer
Look at the unit nameplate
Use your service gauge set and a PT chart
Ask the owner
Measure the condenser pressure - CORRECT ANSWER=>Look at the unit name plate"
"What is the state of the refrigerant when it's leaving the condenser coils into a receiver tank?
Answer
Low Pressure Liquid
Low Pressure Vapor
High Pressure Liquid
High Pressure Vapor - CORRECT ANSWER=>High pressure liquid"
2|Page
,"What will backseating a suction shut-off valve close?
Answer
Suction line and compressor port
Compressor and gauge port
Compressor port
Gauge port - CORRECT ANSWER=>gauge port"
"Which of the following components is located just before the compressor?
Answer
Receiver
Accumulator
Condenser coils
TEV - CORRECT ANSWER=>Accumulator"
"Which of the following refrigerants is not used in Type lI systems?
Answer
R-407C
R-407A
R-245fa
R-22 - CORRECT ANSWER=>R-245fa"
"Which of the following refrigerants would be used in a low-pressure appliance?
Answer
R-22
R-123
R-410A
R-407A - CORRECT ANSWER=>R-123"
"What is the best proof that CFC's are in the stratosphere? - CORRECT ANSWER=>The
measurement of CFC's in air samples from the stratosphere."
"Which type of refrigerant is the most harmful to the stratospheric ozone? - CORRECT
ANSWER=>Refrigerants containing Bromine."
"It is necessary to place a refrigerant label on what? - CORRECT ANSWER=>A refrigerant cylinder
which is being returned for reclaiming."
3|Page
, "When transporting cylinders containing used refrigerant, the DOT requires that you what? -
CORRECT ANSWER=>Attach DOT classification tags."
"Before you dispose of any system containing a refrigerant, you must? - CORRECT
ANSWER=>Recover the refrigerant."
"In general, blended refrigerants should be charged? - CORRECT ANSWER=>As a liquid."
"Refrigerant entering the compressor of a refrigeration system is a? - CORRECT
ANSWER=>Superheated vapor."
"__________ refers to the process of cleaning refrigerants by oil separation & single or multiple
passes through filter-driers, which reduce moisture & acidity? - CORRECT ANSWER=>Recycling"
"When a system will not hold a vacuum after it has been evacuated, then? - CORRECT
ANSWER=>The system may be leaking."
"Which gas(es) would cause the LEAST damage to the environment during a leak check? -
CORRECT ANSWER=>Dry Nitrogen"
"All recovery equipment currently being made is required to have what? - CORRECT
ANSWER=>An EPA approved certification label."
“When moisture exists in an operating system, what is most likely to occur? - CORRECT
ANSWER=>Acid will form."
"What factor(s) affects the speed of evacuation? - CORRECT ANSWER=>1) The size of the
equipment being evacuated.
2)The ambient temperature.
3) The amount of moisture in the system"
"A system is considered dehydrated when? - CORRECT ANSWER=>The vacuum indicator shows
you have reached & held the required finished vacuum."
"The over-evacuation of a system: - CORRECT ANSWER=>Does not occur."
4|Page
