EPA 608 UNIVERSAL 2026-2027 BANK QUESTIONS AND
CORRECT DETAILED ANSWERS (100% CORRECT
VERIFIED ANSWERS) ALREADY GRADED A+
1. What is the Montreal Protocol’s primary requirement regarding Class I and Class II
refrigerants?
A) Increase production annually
B) Phase out production of Class I substances and cap Class II production
C) Ban all refrigerant imports immediately
D) Require leak repairs only for CFCs
Answer: B) Phase out production of Class I substances and cap Class II production
2. According to EPA regulations, what is the maximum allowable leak rate for commercial
refrigeration systems with a 50-pound charge?
A) 15% per year
B) 30% per year
C) 35% per year
D) 20% per year
Answer: C) 35% per year
3. Which refrigerant has the lowest ozone depletion potential (ODP)?
A) R-12
B) R-22
C) R-134a
D) R-123
*Answer: C) R-134a*
● 4. When recovering refrigerant from a small appliance with a non-operating compressor,
you must:
, A) Use a self-contained recovery device
B) Use the system’s compressor to push refrigerant into the recovery cylinder
C) Evacuate to 0 psi and then use a recovery device
D) Recover to 4 inches of vacuum regardless of the appliance type
Answer: A) Use a self-contained recovery device
5. What is the EPA required evacuation level for a recovery cylinder being sent for
reclamation?
A) 10 inches of vacuum
B) 0 psig
C) 25 inches of mercury vacuum
D) 15 psig
Answer: C) 25 inches of mercury vacuum
6. Which of the following refrigerants is classified as an HFO?
A) R-134a
B) R-410A
C) R-1234yf
D) R-22
*Answer: C) R-1234yf*
7. Under EPA Section 608, a "major repair" on a high-pressure appliance requires a technician
to:
A) Recover to 0 psig
B) Recover to 10 inches of Hg vacuum
C) Recover to 15 inches of Hg vacuum
D) Recover to atmospheric pressure only
Answer: B) Recover to 10 inches of Hg vacuum
8. What action must be taken if a comfort cooling appliance with a charge of 75 pounds of
R-410A leaks 25 pounds in a calendar year?
A) No action required
B) Leak repair must be attempted within 30 days
C) Retrofit to R-22
, D) Immediate retirement of the appliance
Answer: B) Leak repair must be attempted within 30 days
9. Which device is NOT approved for recovering refrigerant from a small appliance?
A) Self-contained recovery device
B) System-dependent recovery device
C) Recovery device using the appliance’s compressor
D) Vacuum pump venting to atmosphere
Answer: D) Vacuum pump venting to atmosphere
10. What does "ozone depletion potential" (ODP) measure?
A) Global warming impact
B) Ability of a substance to break down ozone molecules
C) Toxicity level of refrigerant
D) Flammability rating
Answer: B) Ability of a substance to break down ozone molecules
11. For which appliance would a vacuum of 15 inches Hg be required after recovery?
A) Small appliance with R-12
B) High-pressure appliance (e.g., R-410A) for major repair
C) Low-pressure appliance (e.g., R-123)
D) Any appliance under 200 pounds charge
*Answer: C) Low-pressure appliance (e.g., R-123)*
12. What is the legal status of venting CFC, HCFC, or HFC refrigerants?
A) Legal if under 5 pounds
B) Legal only for HFCs
C) Illegal under all circumstances
D) Legal if using a passive recovery device
Answer: C) Illegal under all circumstances
13. A recovery cylinder must never be filled above what percentage of its water capacity?
A) 90%
B) 80%
C) 70%
CORRECT DETAILED ANSWERS (100% CORRECT
VERIFIED ANSWERS) ALREADY GRADED A+
1. What is the Montreal Protocol’s primary requirement regarding Class I and Class II
refrigerants?
A) Increase production annually
B) Phase out production of Class I substances and cap Class II production
C) Ban all refrigerant imports immediately
D) Require leak repairs only for CFCs
Answer: B) Phase out production of Class I substances and cap Class II production
2. According to EPA regulations, what is the maximum allowable leak rate for commercial
refrigeration systems with a 50-pound charge?
A) 15% per year
B) 30% per year
C) 35% per year
D) 20% per year
Answer: C) 35% per year
3. Which refrigerant has the lowest ozone depletion potential (ODP)?
A) R-12
B) R-22
C) R-134a
D) R-123
*Answer: C) R-134a*
● 4. When recovering refrigerant from a small appliance with a non-operating compressor,
you must:
, A) Use a self-contained recovery device
B) Use the system’s compressor to push refrigerant into the recovery cylinder
C) Evacuate to 0 psi and then use a recovery device
D) Recover to 4 inches of vacuum regardless of the appliance type
Answer: A) Use a self-contained recovery device
5. What is the EPA required evacuation level for a recovery cylinder being sent for
reclamation?
A) 10 inches of vacuum
B) 0 psig
C) 25 inches of mercury vacuum
D) 15 psig
Answer: C) 25 inches of mercury vacuum
6. Which of the following refrigerants is classified as an HFO?
A) R-134a
B) R-410A
C) R-1234yf
D) R-22
*Answer: C) R-1234yf*
7. Under EPA Section 608, a "major repair" on a high-pressure appliance requires a technician
to:
A) Recover to 0 psig
B) Recover to 10 inches of Hg vacuum
C) Recover to 15 inches of Hg vacuum
D) Recover to atmospheric pressure only
Answer: B) Recover to 10 inches of Hg vacuum
8. What action must be taken if a comfort cooling appliance with a charge of 75 pounds of
R-410A leaks 25 pounds in a calendar year?
A) No action required
B) Leak repair must be attempted within 30 days
C) Retrofit to R-22
, D) Immediate retirement of the appliance
Answer: B) Leak repair must be attempted within 30 days
9. Which device is NOT approved for recovering refrigerant from a small appliance?
A) Self-contained recovery device
B) System-dependent recovery device
C) Recovery device using the appliance’s compressor
D) Vacuum pump venting to atmosphere
Answer: D) Vacuum pump venting to atmosphere
10. What does "ozone depletion potential" (ODP) measure?
A) Global warming impact
B) Ability of a substance to break down ozone molecules
C) Toxicity level of refrigerant
D) Flammability rating
Answer: B) Ability of a substance to break down ozone molecules
11. For which appliance would a vacuum of 15 inches Hg be required after recovery?
A) Small appliance with R-12
B) High-pressure appliance (e.g., R-410A) for major repair
C) Low-pressure appliance (e.g., R-123)
D) Any appliance under 200 pounds charge
*Answer: C) Low-pressure appliance (e.g., R-123)*
12. What is the legal status of venting CFC, HCFC, or HFC refrigerants?
A) Legal if under 5 pounds
B) Legal only for HFCs
C) Illegal under all circumstances
D) Legal if using a passive recovery device
Answer: C) Illegal under all circumstances
13. A recovery cylinder must never be filled above what percentage of its water capacity?
A) 90%
B) 80%
C) 70%
