EPA Study Guide Exam Questions with
correct Answers 2025/2026 A+ Graded
100% Verified.
It has been a violation of EPA Section 608 regulations to vent HFC's since;
a. July 1, 1992
b. May 1, 1993
c. November 14, 1994
d. November 15, 1995 - ANS- November 15, 1995
Clean refrigerant for reuse by separating the oil from the refrigerant and removing
moisture from the refrigerant by passing through one or more filter driers, is the
definition of,
a. recover
b. reclaim
c. Reuse
d. Recycle - ANS- Recycle
HCFC'S _____________.
a. will not damage the stratospheric ozone
b. will damage the stratospheric ozone
c. will deplete the stratospheric ozone
d. are only harmful to ground level ozone - ANS- will deplete the stratospheric ozone
Chlorofluorocarbons (CFC's) and hydrochlorofluorocarbons (HCFC's)
,a. both contain hydrogen
b. are explosive
c. are ODP substances
d. will be completely phased-out in 2030 - ANS- are ODP substances
Two types of recovery systems are;
a. system dependent and passive
b. system dependent and self contained
c. self contained and active
d. recycling and reclaiming - ANS- b. system dependent and self contained
When a system is in full vacuum __________.
a. it is dangerous to charge the system
b. never use a micron gauge
c. never energize the compressor
d. no precautions are required - ANS- never energize the compressor
As of 2017, How much can a technician be fined for violating the Clean Air Act, including
knowingly releasing non-exempt refrigerant into the atmosphere?
a. $10,000 per day per violation
b. $17,531 per day per violation
c. $27,500 per day per violation
d. $44,539 per day per violation - ANS- $44,539 per day per violation
Manufacturers often color code the exterior of gauges. What color is the high pressure
gauge on a typical gauge manifold set?
a. Green
,b. Yellow
c. Blue
d. Red - ANS- Red
How many different refrigerants may be recovered into the same cylinder?
a. Only one
b. Only two
c. Any number as long as all are CFC's.
d. Depends on the reclaim company. - ANS- Only one
Upon completion of refrigerant liquid transfer between recovery unit and the refrigeration
system, you should guard against trapping:
a. oil in the transfer unit.
b. oil in the refrigeration systems cooler
c. liquid refrigerant in the service hose between closed service valves.
d. liquid refrigerant in the recovery receiver - ANS- liquid refrigerant in the service hose
between closed service valves.
What can ester based oils be mixed with?
a. Pag oils
b. Paraffinic mineral oils
c. Alkyl-benzene oils
d. No other oils - ANS- No other oils
States and local governments may;
a. not establish any laws related to refrigerants.
b. establish laws that are not as strict as the Clean Air Act/EPA regulations
, c. establish laws that contain stricter requirements that the Clean Air Act EPA
regulations.
d. establish laws that exempt refrigerants from the Clean Air Act. - ANS- establish laws
that contain stricter requirements that the Clean Air Act EPA regulations.
Which of the following statements is true?
a. There is no difference between refrigerant grade hydrocarbon refrigerant and propane
for grills.
b. Propane cylinders for grilling contain impurities that can damage refrigeration
equipment.
c. Refrigerant-grade hydrocarbon refrigerant is of lower quality that consumer propane
cylinders.
d. Hydrocarbon refrigerants can be used as a retrofit refrigerant. - ANS- Propane
cylinders for grilling contain impurities that can damage refrigeration equipment.
Which type of refrigerant typically has the lowest global warming potential?
a. HCFCs
b. HFOs
c. HFCS
d. All are equal - ANS- HFOs
Which type of lubricants are HFO refrigerants miscible in?
a. AB lubricants
b. POE lubricants
c. Mineral oils
d. All refrigerant lubricants - ANS- POE lubricants
In which of the following can refrigerant be vented?
a. Releasing R410a from a household refrigerators.
correct Answers 2025/2026 A+ Graded
100% Verified.
It has been a violation of EPA Section 608 regulations to vent HFC's since;
a. July 1, 1992
b. May 1, 1993
c. November 14, 1994
d. November 15, 1995 - ANS- November 15, 1995
Clean refrigerant for reuse by separating the oil from the refrigerant and removing
moisture from the refrigerant by passing through one or more filter driers, is the
definition of,
a. recover
b. reclaim
c. Reuse
d. Recycle - ANS- Recycle
HCFC'S _____________.
a. will not damage the stratospheric ozone
b. will damage the stratospheric ozone
c. will deplete the stratospheric ozone
d. are only harmful to ground level ozone - ANS- will deplete the stratospheric ozone
Chlorofluorocarbons (CFC's) and hydrochlorofluorocarbons (HCFC's)
,a. both contain hydrogen
b. are explosive
c. are ODP substances
d. will be completely phased-out in 2030 - ANS- are ODP substances
Two types of recovery systems are;
a. system dependent and passive
b. system dependent and self contained
c. self contained and active
d. recycling and reclaiming - ANS- b. system dependent and self contained
When a system is in full vacuum __________.
a. it is dangerous to charge the system
b. never use a micron gauge
c. never energize the compressor
d. no precautions are required - ANS- never energize the compressor
As of 2017, How much can a technician be fined for violating the Clean Air Act, including
knowingly releasing non-exempt refrigerant into the atmosphere?
a. $10,000 per day per violation
b. $17,531 per day per violation
c. $27,500 per day per violation
d. $44,539 per day per violation - ANS- $44,539 per day per violation
Manufacturers often color code the exterior of gauges. What color is the high pressure
gauge on a typical gauge manifold set?
a. Green
,b. Yellow
c. Blue
d. Red - ANS- Red
How many different refrigerants may be recovered into the same cylinder?
a. Only one
b. Only two
c. Any number as long as all are CFC's.
d. Depends on the reclaim company. - ANS- Only one
Upon completion of refrigerant liquid transfer between recovery unit and the refrigeration
system, you should guard against trapping:
a. oil in the transfer unit.
b. oil in the refrigeration systems cooler
c. liquid refrigerant in the service hose between closed service valves.
d. liquid refrigerant in the recovery receiver - ANS- liquid refrigerant in the service hose
between closed service valves.
What can ester based oils be mixed with?
a. Pag oils
b. Paraffinic mineral oils
c. Alkyl-benzene oils
d. No other oils - ANS- No other oils
States and local governments may;
a. not establish any laws related to refrigerants.
b. establish laws that are not as strict as the Clean Air Act/EPA regulations
, c. establish laws that contain stricter requirements that the Clean Air Act EPA
regulations.
d. establish laws that exempt refrigerants from the Clean Air Act. - ANS- establish laws
that contain stricter requirements that the Clean Air Act EPA regulations.
Which of the following statements is true?
a. There is no difference between refrigerant grade hydrocarbon refrigerant and propane
for grills.
b. Propane cylinders for grilling contain impurities that can damage refrigeration
equipment.
c. Refrigerant-grade hydrocarbon refrigerant is of lower quality that consumer propane
cylinders.
d. Hydrocarbon refrigerants can be used as a retrofit refrigerant. - ANS- Propane
cylinders for grilling contain impurities that can damage refrigeration equipment.
Which type of refrigerant typically has the lowest global warming potential?
a. HCFCs
b. HFOs
c. HFCS
d. All are equal - ANS- HFOs
Which type of lubricants are HFO refrigerants miscible in?
a. AB lubricants
b. POE lubricants
c. Mineral oils
d. All refrigerant lubricants - ANS- POE lubricants
In which of the following can refrigerant be vented?
a. Releasing R410a from a household refrigerators.
