EPA 608 Exam | 2026/2027 | Answers Correct | With
Complete Solutions
________ can be recovered into the same cylinder Correct
Answers Only 1 refrigerant
________ can combine to cause a fire or explosion when
working with flammable hydrocarbon refrigerants Correct
Answers A sufficient concentration of the refrigerant in the
space and an ignition source
________ contains chlorine. Correct Answers R-22
________ damages stratospheric ozone. Correct Answers
HCFCs
________ has the lowest ODP. Correct Answers R-410A
________ is cleaning the refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like
replaceable core filter driers Correct Answers Recycling
________ is the only EPA SNAP approved "drop-in"
replacement for R-22. Correct Answers There are no direct
drop-in refrigerant substitutes.
________ is the removal of refrigerant from a system and
storing it in a container without testing or processing it in any
way Correct Answers Recovering
,________ make(s) HFO refrigerants less flammable than HC
refrigerants. Correct Answers Fluorine
________ means that the refrigerant blend has a range of bubble
or dew points at a constant pressure. Correct Answers
Temperature glide
________ refrigerant has an ODP that is greater than 0 Correct
Answers R-22
________ refrigerants are the most harmful to stratospheric
ozone. Correct Answers CFCs
________ refrigerants have the highest ODP. Correct Answers
CFCs
________ returns refrigerant to new product specifications and
requires chemical analysis to verify the purity to AHRI-700
standards. Correct Answers Reclaiming
________ the speed of dehydration Correct Answers The size
of the equipment being evacuated and the size of the vacuum
pump both affect
The ambient temperature affects
The moisture in the system affects
________ the speed of evacuation. Correct Answers The size
of the equipment being evacuated and the size of the vacuum
pump both affect
The ambient temperature affects
The moisture in the system affects
, ________ to verify the allowable machine test pressure. Correct
Answers Use the value on the system nameplate
________, only containers designated "refillable" by DOT can
be used for transporting recovered pressurized refrigerant.
Correct Answers To meet safety requirements
A ________ recovery device uses the compressor in the
appliance and/or the pressure of the refrigerant in the appliance.
Correct Answers system-dependent
A "self-contained" recovery device ________. Correct Answers
removes refrigerant with the assistance of components in the
appliance
A compound pressure gauge measures pressure in ________
Correct Answers psig and inches of mercury
A flammable refrigerant can only burn or explode if the
refrigerant concentration is ________. Correct Answers both
above the lower flammability limit and below the upper
flammability limit
A reduction in stratospheric ozone causes ________. Correct
Answers Decreased crop yields and damage to marine
organisms
A refrigerant cylinder that has a gray body and a yellow top is
designed to hold ________. Correct Answers recovered
refrigerant
Complete Solutions
________ can be recovered into the same cylinder Correct
Answers Only 1 refrigerant
________ can combine to cause a fire or explosion when
working with flammable hydrocarbon refrigerants Correct
Answers A sufficient concentration of the refrigerant in the
space and an ignition source
________ contains chlorine. Correct Answers R-22
________ damages stratospheric ozone. Correct Answers
HCFCs
________ has the lowest ODP. Correct Answers R-410A
________ is cleaning the refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like
replaceable core filter driers Correct Answers Recycling
________ is the only EPA SNAP approved "drop-in"
replacement for R-22. Correct Answers There are no direct
drop-in refrigerant substitutes.
________ is the removal of refrigerant from a system and
storing it in a container without testing or processing it in any
way Correct Answers Recovering
,________ make(s) HFO refrigerants less flammable than HC
refrigerants. Correct Answers Fluorine
________ means that the refrigerant blend has a range of bubble
or dew points at a constant pressure. Correct Answers
Temperature glide
________ refrigerant has an ODP that is greater than 0 Correct
Answers R-22
________ refrigerants are the most harmful to stratospheric
ozone. Correct Answers CFCs
________ refrigerants have the highest ODP. Correct Answers
CFCs
________ returns refrigerant to new product specifications and
requires chemical analysis to verify the purity to AHRI-700
standards. Correct Answers Reclaiming
________ the speed of dehydration Correct Answers The size
of the equipment being evacuated and the size of the vacuum
pump both affect
The ambient temperature affects
The moisture in the system affects
________ the speed of evacuation. Correct Answers The size
of the equipment being evacuated and the size of the vacuum
pump both affect
The ambient temperature affects
The moisture in the system affects
, ________ to verify the allowable machine test pressure. Correct
Answers Use the value on the system nameplate
________, only containers designated "refillable" by DOT can
be used for transporting recovered pressurized refrigerant.
Correct Answers To meet safety requirements
A ________ recovery device uses the compressor in the
appliance and/or the pressure of the refrigerant in the appliance.
Correct Answers system-dependent
A "self-contained" recovery device ________. Correct Answers
removes refrigerant with the assistance of components in the
appliance
A compound pressure gauge measures pressure in ________
Correct Answers psig and inches of mercury
A flammable refrigerant can only burn or explode if the
refrigerant concentration is ________. Correct Answers both
above the lower flammability limit and below the upper
flammability limit
A reduction in stratospheric ozone causes ________. Correct
Answers Decreased crop yields and damage to marine
organisms
A refrigerant cylinder that has a gray body and a yellow top is
designed to hold ________. Correct Answers recovered
refrigerant
