EPA 608 UNIVERSAL EXAM STUDY GUIDE
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS || 100%
GUARANTEED PASS <NEWEST VERSION>
What is the purpose of the EPA 608 Universal Certification? - ANSWER✔To
authorize HVAC/R technicians to handle, service, and dispose of refrigerants in
stationary refrigeration and air-conditioning systems.
What are the three equipment-specific types covered by the EPA 608
certification? - ANSWER✔Type I (small appliances), Type II (high-pressure
appliances), and Type III (low-pressure appliances).
What significant act was amended in 1990 to regulate ozone-depleting substances?
- ANSWER✔The Clean Air Act (CAA).
What does Section 608 of the Clean Air Act aim to minimize? -
ANSWER✔Emissions of refrigerants that harm the stratospheric ozone layer and
contribute to global warming.
What year was the Montreal Protocol signed? - ANSWER✔1987.
What major milestone occurred in 1996 regarding EPA 608 certification? -
ANSWER✔EPA 608 certification became mandatory.
,What is the significance of the AIM Act of 2020? - ANSWER✔It mandates the
phase-down of high-GWP HFCs in new equipment.
What is Ozone Depletion Potential (ODP)? - ANSWER✔A measure of a
substance's ability to deplete the ozone layer.
What are the ODP values for CFCs and HCFCs? - ANSWER✔CFCs have ODP
values of 1.0; HCFCs have lower ODP values (0.02-0.11).
What is Global Warming Potential (GWP)? - ANSWER✔A measure of a
refrigerant's heat-trapping ability relative to CO₂.
What does the AIM Act direct the EPA to do by 2036? - ANSWER✔Reduce HFC
production and consumption by 85%.
What are the four certification sections of the EPA 608 exam? - ANSWER✔Core,
Type I, Type II, Type III
What does Type I cover? - ANSWER✔Small appliances with 5 pounds or less of
refrigerant.
What is the definition of a small appliance in the context of EPA 608? -
ANSWER✔A factory sealed, hermetically sealed appliance containing 5 pounds or
less of refrigerant.
What is the main focus of the Core section of the EPA 608 exam? -
ANSWER✔Ozone depletion, refrigerant identification, recovery, recycling,
reclaiming, safety, and dehydration.
, What is the role of the ozone layer? - ANSWER✔It protects Earth from ultraviolet
radiation.
How do CFCs and HCFCs affect the ozone layer? - ANSWER✔They damage
ozone due to their chlorine content.
What is the significance of HFCs in relation to ozone depletion? -
ANSWER✔HFCs do not contain chlorine, so they do not damage ozone, but many
have high Global Warming Potential (GWP).
What are the ASHRAE safety classes for refrigerants? - ANSWER✔A = lower
toxicity, B = higher toxicity; 1 = no flame propagation, 2 = lower flammability, 3 =
higher flammability.
What are the pressure groups at 104°F liquid-phase temperature? -
ANSWER✔Low pressure = 30 psig or lower; Medium pressure = 30 to 155 psig;
High pressure = 155 to 340 psig; Very high pressure = over 340 psig.
What does it mean to recover refrigerant? - ANSWER✔To remove refrigerant and
store it in an approved container.
What does recycling refrigerant involve? - ANSWER✔Cleaning refrigerant for
reuse by oil separation and filter-driers.
What is the process of reclaiming refrigerant? - ANSWER✔Processing refrigerant
back to virgin-like standard; must meet AHRI 700 before resale.
, What is illegal regarding refrigerants during service? - ANSWER✔It is illegal to
knowingly vent CFC, HCFC, HFC, or HFO refrigerants.
What are the high-priority safety rules for handling refrigerants? -
ANSWER✔Never pressurize with oxygen or compressed air; use nitrogen with a
regulator and relief valve.
What is the target evacuation level for moisture in a system? - ANSWER✔500
microns or lower.
What does Type II cover? - ANSWER✔Medium-, high-, and very high-pressure
appliances, excluding small appliances and MVACs.
What are the leak repair thresholds for appliances with 50 pounds or more of
refrigerant? - ANSWER✔10% for comfort cooling, 20% for commercial
refrigeration, 30% for industrial process refrigeration.
What is the maximum nitrogen test pressure for low-pressure centrifugal chillers?
- ANSWER✔10 psig.
What is the recovery process for Type III systems? - ANSWER✔Recovery
usually starts with liquid removal first, then vapor.
What is the classification of R-123 refrigerant? - ANSWER✔Classified as B1.
What is the maximum recovery level for very high-pressure appliances using post-
1993 recovery equipment? - ANSWER✔0" Hg.
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS || 100%
GUARANTEED PASS <NEWEST VERSION>
What is the purpose of the EPA 608 Universal Certification? - ANSWER✔To
authorize HVAC/R technicians to handle, service, and dispose of refrigerants in
stationary refrigeration and air-conditioning systems.
What are the three equipment-specific types covered by the EPA 608
certification? - ANSWER✔Type I (small appliances), Type II (high-pressure
appliances), and Type III (low-pressure appliances).
What significant act was amended in 1990 to regulate ozone-depleting substances?
- ANSWER✔The Clean Air Act (CAA).
What does Section 608 of the Clean Air Act aim to minimize? -
ANSWER✔Emissions of refrigerants that harm the stratospheric ozone layer and
contribute to global warming.
What year was the Montreal Protocol signed? - ANSWER✔1987.
What major milestone occurred in 1996 regarding EPA 608 certification? -
ANSWER✔EPA 608 certification became mandatory.
,What is the significance of the AIM Act of 2020? - ANSWER✔It mandates the
phase-down of high-GWP HFCs in new equipment.
What is Ozone Depletion Potential (ODP)? - ANSWER✔A measure of a
substance's ability to deplete the ozone layer.
What are the ODP values for CFCs and HCFCs? - ANSWER✔CFCs have ODP
values of 1.0; HCFCs have lower ODP values (0.02-0.11).
What is Global Warming Potential (GWP)? - ANSWER✔A measure of a
refrigerant's heat-trapping ability relative to CO₂.
What does the AIM Act direct the EPA to do by 2036? - ANSWER✔Reduce HFC
production and consumption by 85%.
What are the four certification sections of the EPA 608 exam? - ANSWER✔Core,
Type I, Type II, Type III
What does Type I cover? - ANSWER✔Small appliances with 5 pounds or less of
refrigerant.
What is the definition of a small appliance in the context of EPA 608? -
ANSWER✔A factory sealed, hermetically sealed appliance containing 5 pounds or
less of refrigerant.
What is the main focus of the Core section of the EPA 608 exam? -
ANSWER✔Ozone depletion, refrigerant identification, recovery, recycling,
reclaiming, safety, and dehydration.
, What is the role of the ozone layer? - ANSWER✔It protects Earth from ultraviolet
radiation.
How do CFCs and HCFCs affect the ozone layer? - ANSWER✔They damage
ozone due to their chlorine content.
What is the significance of HFCs in relation to ozone depletion? -
ANSWER✔HFCs do not contain chlorine, so they do not damage ozone, but many
have high Global Warming Potential (GWP).
What are the ASHRAE safety classes for refrigerants? - ANSWER✔A = lower
toxicity, B = higher toxicity; 1 = no flame propagation, 2 = lower flammability, 3 =
higher flammability.
What are the pressure groups at 104°F liquid-phase temperature? -
ANSWER✔Low pressure = 30 psig or lower; Medium pressure = 30 to 155 psig;
High pressure = 155 to 340 psig; Very high pressure = over 340 psig.
What does it mean to recover refrigerant? - ANSWER✔To remove refrigerant and
store it in an approved container.
What does recycling refrigerant involve? - ANSWER✔Cleaning refrigerant for
reuse by oil separation and filter-driers.
What is the process of reclaiming refrigerant? - ANSWER✔Processing refrigerant
back to virgin-like standard; must meet AHRI 700 before resale.
, What is illegal regarding refrigerants during service? - ANSWER✔It is illegal to
knowingly vent CFC, HCFC, HFC, or HFO refrigerants.
What are the high-priority safety rules for handling refrigerants? -
ANSWER✔Never pressurize with oxygen or compressed air; use nitrogen with a
regulator and relief valve.
What is the target evacuation level for moisture in a system? - ANSWER✔500
microns or lower.
What does Type II cover? - ANSWER✔Medium-, high-, and very high-pressure
appliances, excluding small appliances and MVACs.
What are the leak repair thresholds for appliances with 50 pounds or more of
refrigerant? - ANSWER✔10% for comfort cooling, 20% for commercial
refrigeration, 30% for industrial process refrigeration.
What is the maximum nitrogen test pressure for low-pressure centrifugal chillers?
- ANSWER✔10 psig.
What is the recovery process for Type III systems? - ANSWER✔Recovery
usually starts with liquid removal first, then vapor.
What is the classification of R-123 refrigerant? - ANSWER✔Classified as B1.
What is the maximum recovery level for very high-pressure appliances using post-
1993 recovery equipment? - ANSWER✔0" Hg.
