1|Page
Skillcat EPA 608 Newly Updated 2025/26 Exam
Questions & Answers, 100% Guaranteed Pass
||Complete A+ Guide Tested Exam
1.
Which of the following refrigerants is classified as a CFC and has the highest ozone depletion
potential (ODP)?
A. R-134a
B. R-22
C. R-12
D. R-410A
Answer: C
2.
Under EPA Section 608, which type of certification is required for servicing small appliances
containing 5 pounds or less of refrigerant?
A. Type I
B. Type II
C. Type III
D. Universal
Answer: A
,2|Page
3.
Which recovery method is required for appliances with more than 200 pounds of
highpressure refrigerant?
A. System-dependent recovery
B. Self-contained recovery equipment
C. Passive recovery only
D. Venting allowed if filter drier installed
Answer: B
4.
When a refrigerant cylinder is color-coded light pink, which refrigerant does it most
likely contain? A. R-22
B. R-410A
C. R-12
D. R-134a
Answer: B
5.
Which is the maximum allowable leak rate for industrial process refrigeration under EPA
regulations?
A. 10%
B. 20%
C. 30%
D. 35%
Answer: D
,3|Page
6.
Why is venting HFCs such as R-134a prohibited under EPA regulations?
A. They are flammable
B. They contribute to ozone depletion
C. They contribute to global warming
D. They reduce system efficiency
Answer: C
7.
What is the primary purpose of a vacuum pump during refrigerant recovery?
A. Remove oil from the system
B. Eliminate non-condensable gases and moisture
C. Increase refrigerant flow
D. Reduce system superheat
Answer: B
8.
Which refrigerant lubricant is most commonly used with HFC refrigerants such as R-134a?
A. Mineral oil
B. Alkylbenzene oil
C. PAG oil
D. POE oil (Polyolester)
Answer: D
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9.
What is the minimum evacuation level required for a low-pressure chiller containing more
than 200 pounds of refrigerant?
A. 25 inches Hg vacuum
B. 0 psig
C. 10 inches Hg vacuum
D. 15 inches Hg vacuum
Answer: C
10.
Which component separates oil from refrigerant vapor in large refrigeration systems?
A. Receiver
B. Suction accumulator
C. Oil separator
D. Filter drier
Answer: C
11.
Which safety classification applies to refrigerants with low toxicity and no flame propagation?
A. A1
B. A2
C. B1
D. B3
Answer: A
Skillcat EPA 608 Newly Updated 2025/26 Exam
Questions & Answers, 100% Guaranteed Pass
||Complete A+ Guide Tested Exam
1.
Which of the following refrigerants is classified as a CFC and has the highest ozone depletion
potential (ODP)?
A. R-134a
B. R-22
C. R-12
D. R-410A
Answer: C
2.
Under EPA Section 608, which type of certification is required for servicing small appliances
containing 5 pounds or less of refrigerant?
A. Type I
B. Type II
C. Type III
D. Universal
Answer: A
,2|Page
3.
Which recovery method is required for appliances with more than 200 pounds of
highpressure refrigerant?
A. System-dependent recovery
B. Self-contained recovery equipment
C. Passive recovery only
D. Venting allowed if filter drier installed
Answer: B
4.
When a refrigerant cylinder is color-coded light pink, which refrigerant does it most
likely contain? A. R-22
B. R-410A
C. R-12
D. R-134a
Answer: B
5.
Which is the maximum allowable leak rate for industrial process refrigeration under EPA
regulations?
A. 10%
B. 20%
C. 30%
D. 35%
Answer: D
,3|Page
6.
Why is venting HFCs such as R-134a prohibited under EPA regulations?
A. They are flammable
B. They contribute to ozone depletion
C. They contribute to global warming
D. They reduce system efficiency
Answer: C
7.
What is the primary purpose of a vacuum pump during refrigerant recovery?
A. Remove oil from the system
B. Eliminate non-condensable gases and moisture
C. Increase refrigerant flow
D. Reduce system superheat
Answer: B
8.
Which refrigerant lubricant is most commonly used with HFC refrigerants such as R-134a?
A. Mineral oil
B. Alkylbenzene oil
C. PAG oil
D. POE oil (Polyolester)
Answer: D
, 4|Page
9.
What is the minimum evacuation level required for a low-pressure chiller containing more
than 200 pounds of refrigerant?
A. 25 inches Hg vacuum
B. 0 psig
C. 10 inches Hg vacuum
D. 15 inches Hg vacuum
Answer: C
10.
Which component separates oil from refrigerant vapor in large refrigeration systems?
A. Receiver
B. Suction accumulator
C. Oil separator
D. Filter drier
Answer: C
11.
Which safety classification applies to refrigerants with low toxicity and no flame propagation?
A. A1
B. A2
C. B1
D. B3
Answer: A
