EPA 609 Study Guide 2026 | Latest Update | Complete Exam
Prep Review | Graded A+
1. Non-condensables in a refrigeration system result in a __ _.
higher discharge pressure
excessive noise
lower discharge pressure
excessive vibration
2. Over the road refrigeration units and R-22 (HCFC) air conditioning, such as
that found in buses, also requires Section certification
201
702
609
608
3. If a company is transitioning from CFCs to R-152a as a refrigerant, what
environmental benefit can they expect?
Increased regulatory fines
Reduced ozone depletion potential
Higher energy consumption
Increased greenhouse gas emissions
4. When recovering refrigerant into a recovery tank the fill capacity cannot
exceed?
50%
, 80 %
90%
5. How many ozone molecules can each chlorine atom in the stratosphere
destroy?
1,000 molecules
None. Chlorine is not the element in refrigerant that harms ozone.
100,000,000 molecules
100,000 molecules
6. Describe the importance of evacuating Disposable Refrigerant Tanks before
disposal in relation to environmental regulations.
Evacuating tanks is only required for tanks over a certain size.
Evacuating is unnecessary as refrigerants are harmless to the
environment.
Evacuating Disposable Refrigerant Tanks is crucial to prevent the
release of harmful refrigerants into the atmosphere, which can
contribute to ozone depletion and global warming.
Evacuating tanks is a recommendation but not a legal requirement.
7. Which of the following is a true statement regarding R-134a refrigerant?
At ordinary temperatures, it is a gas
Mixtures of R-134a vapor and air, in all proportions, are irritating to the
eyes
If concentrations become excessive, unconsciousness or even death
may result
It will corrode the metals commonly used in refrigeration systems
,8. Hydrofluorocarbons (HFCs) contributes to which of the following?
Acidic rain
Road decay
Forest fires
Global warming
9. What is the minimum amount of regulated CFCs that triggers the floor tax
requirement?
25 pounds
50 pounds
75 pounds
100 pounds
10. What is the Ozone Depletion Potential (ODP) factor assigned to
chlorofluorocarbons (CFCs)?
1
0.5
0
2
11. What does air and other non-condensable gases cause in a refrigeration
system?
It air locks the circulating pump
High discharge pressures
The compressor will run continuously
, Frosting of suction lines
Poor heat transfer
12. What year marked the end of CFCs manufacture as per EPA regulations?
1987
1992
1996
2000
13. A bounty of up to may be awarded to a person who informs on a technician
who is intentionally venting refrigerants.
$10,000
$100,000
$500
$27,500
14. What is the maximum fill percentage allowed for a refillable refrigerant
cylinder according to EPA regulations?
100%
75%
80%
90%
15. If a technician mistakenly uses a cylinder of R-134a that is not light green,
what potential consequences could arise in terms of environmental
regulations?
Prep Review | Graded A+
1. Non-condensables in a refrigeration system result in a __ _.
higher discharge pressure
excessive noise
lower discharge pressure
excessive vibration
2. Over the road refrigeration units and R-22 (HCFC) air conditioning, such as
that found in buses, also requires Section certification
201
702
609
608
3. If a company is transitioning from CFCs to R-152a as a refrigerant, what
environmental benefit can they expect?
Increased regulatory fines
Reduced ozone depletion potential
Higher energy consumption
Increased greenhouse gas emissions
4. When recovering refrigerant into a recovery tank the fill capacity cannot
exceed?
50%
, 80 %
90%
5. How many ozone molecules can each chlorine atom in the stratosphere
destroy?
1,000 molecules
None. Chlorine is not the element in refrigerant that harms ozone.
100,000,000 molecules
100,000 molecules
6. Describe the importance of evacuating Disposable Refrigerant Tanks before
disposal in relation to environmental regulations.
Evacuating tanks is only required for tanks over a certain size.
Evacuating is unnecessary as refrigerants are harmless to the
environment.
Evacuating Disposable Refrigerant Tanks is crucial to prevent the
release of harmful refrigerants into the atmosphere, which can
contribute to ozone depletion and global warming.
Evacuating tanks is a recommendation but not a legal requirement.
7. Which of the following is a true statement regarding R-134a refrigerant?
At ordinary temperatures, it is a gas
Mixtures of R-134a vapor and air, in all proportions, are irritating to the
eyes
If concentrations become excessive, unconsciousness or even death
may result
It will corrode the metals commonly used in refrigeration systems
,8. Hydrofluorocarbons (HFCs) contributes to which of the following?
Acidic rain
Road decay
Forest fires
Global warming
9. What is the minimum amount of regulated CFCs that triggers the floor tax
requirement?
25 pounds
50 pounds
75 pounds
100 pounds
10. What is the Ozone Depletion Potential (ODP) factor assigned to
chlorofluorocarbons (CFCs)?
1
0.5
0
2
11. What does air and other non-condensable gases cause in a refrigeration
system?
It air locks the circulating pump
High discharge pressures
The compressor will run continuously
, Frosting of suction lines
Poor heat transfer
12. What year marked the end of CFCs manufacture as per EPA regulations?
1987
1992
1996
2000
13. A bounty of up to may be awarded to a person who informs on a technician
who is intentionally venting refrigerants.
$10,000
$100,000
$500
$27,500
14. What is the maximum fill percentage allowed for a refillable refrigerant
cylinder according to EPA regulations?
100%
75%
80%
90%
15. If a technician mistakenly uses a cylinder of R-134a that is not light green,
what potential consequences could arise in terms of environmental
regulations?
