EPA 608 Universal Exam 2026/2027
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || GUARANTEED
PASS
1. Appliances used in retail food and cold storage warehouse sectors are
classified as what refrigeration category by the EPA? - ANSWER ✅
Commercial refrigeration
2. According to the EPA, which method can be used to determine the full
charge of a system to assess if it is leaking beyond the allowable rate? -
ANSWER ✅ Use of calculations based on component and pipe sizes
3. Which of the following refrigerant releases is illegal? - ANSWER ✅
Venting refrigerant from a recovery machine or recovery cylinder.
4. Which statement accurately describes the difference between hydrocarbon
refrigerants and propane? - ANSWER ✅ Propane for grilling contains
impurities that can damage refrigeration systems.
5. Which of these appliances is not covered by EPA Section 608 regulations? -
ANSWER ✅ Desiccant dehumidifiers
6. What is the primary purpose of the Montreal Protocol? - ANSWER ✅ An
international treaty that addresses ozone-depleting substances and their
alternatives.
,7. What environmental impact can result from the depletion of stratospheric
ozone? - ANSWER ✅ Lower crop yields and harm to marine life
8. How should a technican discard of disposable cylinders of CFCs, HCFCs,
and HFCs? - ANSWER ✅ Recover all remaining refrigerant, render the
cylinders useless, and recycle the metal.
9. What is the leading cause of death in most refrigerant-related accidents? -
ANSWER ✅ Oxygen deprivation.
10.Which refrigerant safety classification designation is the safest, according to
the ASHRAE standards? - ANSWER ✅ A1
11.THe EPA program that identifies refrigerants with lower overall risks to
human health and the environment is called... - ANSWER ✅ The
Significant New Alternatives Policy (SNAP) Program
12.Ternary blends containing HCFCs are typically paired with which of the
following synthetic lubricants? - ANSWER ✅ Alkylbenzene
13.How does the global warming potential of R-410A compare to carbon
dioxide? - ANSWER ✅ It is thousands of times greater.
14.How does a direct expansion vapor compression refrigeration system
produce cooling? - ANSWER ✅ By vaporizing the liquid refrigerant.
, 15.According to ASHRAE Guideline 3, at what pressure rise during a standard
vacuum test should a system be checked for leaks? - ANSWER ✅ 2.5 mm
Hg
16.To which systems do EPA leak repair requirements apply? - ANSWER ✅
Systems with charges of 50 pounds or more.
17.What is the leak rate threshold for comfort cooling appliances with a full
charge of 50 or more pounds of an HCFC refrigerant as of 2019? -
ANSWER ✅ 10%
18.A technician should take an oil sample if which of the following has
occurred? - ANSWER ✅ The unit has had a compressor burnout.
19.What is the saturation temperature of R-123 at a pressure of 18.1 inches Hg
vacuum? - ANSWER ✅ 40°F
20.According to 2019 EPA regulations, when must industrial process
refrigeration systems with ozone-depleting refrigerants be repaired,
retrofitted, or retired? - ANSWER ✅ Leak rate exceeds 30% per year
21.The typical design burst pressure for a rupture disk on a low-pressure
centrifugal air-conditioning system is what? - ANSWER ✅ 15 psig
22.Air in a low-pressure system is indicated by what? - ANSWER ✅ High
head pressure
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || GUARANTEED
PASS
1. Appliances used in retail food and cold storage warehouse sectors are
classified as what refrigeration category by the EPA? - ANSWER ✅
Commercial refrigeration
2. According to the EPA, which method can be used to determine the full
charge of a system to assess if it is leaking beyond the allowable rate? -
ANSWER ✅ Use of calculations based on component and pipe sizes
3. Which of the following refrigerant releases is illegal? - ANSWER ✅
Venting refrigerant from a recovery machine or recovery cylinder.
4. Which statement accurately describes the difference between hydrocarbon
refrigerants and propane? - ANSWER ✅ Propane for grilling contains
impurities that can damage refrigeration systems.
5. Which of these appliances is not covered by EPA Section 608 regulations? -
ANSWER ✅ Desiccant dehumidifiers
6. What is the primary purpose of the Montreal Protocol? - ANSWER ✅ An
international treaty that addresses ozone-depleting substances and their
alternatives.
,7. What environmental impact can result from the depletion of stratospheric
ozone? - ANSWER ✅ Lower crop yields and harm to marine life
8. How should a technican discard of disposable cylinders of CFCs, HCFCs,
and HFCs? - ANSWER ✅ Recover all remaining refrigerant, render the
cylinders useless, and recycle the metal.
9. What is the leading cause of death in most refrigerant-related accidents? -
ANSWER ✅ Oxygen deprivation.
10.Which refrigerant safety classification designation is the safest, according to
the ASHRAE standards? - ANSWER ✅ A1
11.THe EPA program that identifies refrigerants with lower overall risks to
human health and the environment is called... - ANSWER ✅ The
Significant New Alternatives Policy (SNAP) Program
12.Ternary blends containing HCFCs are typically paired with which of the
following synthetic lubricants? - ANSWER ✅ Alkylbenzene
13.How does the global warming potential of R-410A compare to carbon
dioxide? - ANSWER ✅ It is thousands of times greater.
14.How does a direct expansion vapor compression refrigeration system
produce cooling? - ANSWER ✅ By vaporizing the liquid refrigerant.
, 15.According to ASHRAE Guideline 3, at what pressure rise during a standard
vacuum test should a system be checked for leaks? - ANSWER ✅ 2.5 mm
Hg
16.To which systems do EPA leak repair requirements apply? - ANSWER ✅
Systems with charges of 50 pounds or more.
17.What is the leak rate threshold for comfort cooling appliances with a full
charge of 50 or more pounds of an HCFC refrigerant as of 2019? -
ANSWER ✅ 10%
18.A technician should take an oil sample if which of the following has
occurred? - ANSWER ✅ The unit has had a compressor burnout.
19.What is the saturation temperature of R-123 at a pressure of 18.1 inches Hg
vacuum? - ANSWER ✅ 40°F
20.According to 2019 EPA regulations, when must industrial process
refrigeration systems with ozone-depleting refrigerants be repaired,
retrofitted, or retired? - ANSWER ✅ Leak rate exceeds 30% per year
21.The typical design burst pressure for a rupture disk on a low-pressure
centrifugal air-conditioning system is what? - ANSWER ✅ 15 psig
22.Air in a low-pressure system is indicated by what? - ANSWER ✅ High
head pressure
