EPA 609 Technician Certification 2026 | Latest Update |
Exam Prep Questions & Answers | Graded A+
1. Which element is absent in the chemical composition of R-152a refrigerant?
CARBON
CHLORINE
FLUORINE
HYDROGEN
2. If a technician were to vent HCFCs after 2010, what legal consequences
could they face?
Increased certification opportunities
Fines and potential loss of certification
A warning but no fines
No consequences as it is allowed under certain conditions
3. Describe the significance of maintaining the moisture level in recycled R-12
(CFC-12) for environmental safety.
High moisture levels in recycled R-12 improve cooling efficiency.
Moisture levels are only a concern during the initial charging of the
system.
Moisture levels in recycled R-12 do not affect system performance.
Maintaining low moisture levels in recycled R-12 is crucial to prevent
corrosion and ensure efficient operation of air-conditioning
systems.
,4. If a technician finds that the moisture content in recycled R-134a exceeds the
maximum limit, what steps should they take before using it in a mobile air-
conditioning system?
The technician can use the refrigerant as is, since it will not affect
performance.
The technician should remove the moisture using a dehydration
process before use.
The technician should mix it with new refrigerant to dilute the
moisture.
The technician should dispose of the refrigerant immediately.
5. Describe how HFC-134a impacts the environment in relation to global
warming.
HFC-134a contributes to acid rain formation.
HFC-134a causes ozone depletion by reacting with UV radiation.
HFC-134a has no significant environmental impact.
HFC-134a is a greenhouse gas that contributes to global warming
by trapping heat in the atmosphere.
6. Cylinders used for recovered refrigerants must be pressure tested every:
six months.
three years.
five years.
year.
7. Which of the following is a specific example of a hydrofluorocarbon (HFC)?
, R-410A
CFC-12
HCFC-22
HFC-134a
8. How many inches down the side are recovery cylinders painted yellow?
9 inches
12 inches
3 inches
6 inches
9. Refrigerant recovery cylinders are color coded _____.
gray top and yellow lower body
gray top and light blue lower body
light blue top and yellow lower body
yellow top and gray body
10. If a technician is found venting a substitute refrigerant after 2010, what legal
consequences might they face under EPA regulations?
A warning but no fines
Fines and potential loss of certification
No consequences, as it is allowed under certain conditions
Mandatory training on refrigerant handling
, 11. Records of all systems inspections, tests, and maintenance shall be
maintained on the premises for a minimum of years.
1
2
3
5
12. What is the term used to describe the potential of a substance to harm the
ozone layer?
Chemical stability
Toxicity level
Global warming potential
Ozone-depletion potential
13. Identify the CFC with the longest atmospheric lifetime
CFC 115
CFC 113
CFC 11
CFC 23
14. What is the altitude range of the ozone layer above the Earth's surface?
10 to 30 miles
15 to 25 miles
5 to 15 miles
20 to 40 miles
Exam Prep Questions & Answers | Graded A+
1. Which element is absent in the chemical composition of R-152a refrigerant?
CARBON
CHLORINE
FLUORINE
HYDROGEN
2. If a technician were to vent HCFCs after 2010, what legal consequences
could they face?
Increased certification opportunities
Fines and potential loss of certification
A warning but no fines
No consequences as it is allowed under certain conditions
3. Describe the significance of maintaining the moisture level in recycled R-12
(CFC-12) for environmental safety.
High moisture levels in recycled R-12 improve cooling efficiency.
Moisture levels are only a concern during the initial charging of the
system.
Moisture levels in recycled R-12 do not affect system performance.
Maintaining low moisture levels in recycled R-12 is crucial to prevent
corrosion and ensure efficient operation of air-conditioning
systems.
,4. If a technician finds that the moisture content in recycled R-134a exceeds the
maximum limit, what steps should they take before using it in a mobile air-
conditioning system?
The technician can use the refrigerant as is, since it will not affect
performance.
The technician should remove the moisture using a dehydration
process before use.
The technician should mix it with new refrigerant to dilute the
moisture.
The technician should dispose of the refrigerant immediately.
5. Describe how HFC-134a impacts the environment in relation to global
warming.
HFC-134a contributes to acid rain formation.
HFC-134a causes ozone depletion by reacting with UV radiation.
HFC-134a has no significant environmental impact.
HFC-134a is a greenhouse gas that contributes to global warming
by trapping heat in the atmosphere.
6. Cylinders used for recovered refrigerants must be pressure tested every:
six months.
three years.
five years.
year.
7. Which of the following is a specific example of a hydrofluorocarbon (HFC)?
, R-410A
CFC-12
HCFC-22
HFC-134a
8. How many inches down the side are recovery cylinders painted yellow?
9 inches
12 inches
3 inches
6 inches
9. Refrigerant recovery cylinders are color coded _____.
gray top and yellow lower body
gray top and light blue lower body
light blue top and yellow lower body
yellow top and gray body
10. If a technician is found venting a substitute refrigerant after 2010, what legal
consequences might they face under EPA regulations?
A warning but no fines
Fines and potential loss of certification
No consequences, as it is allowed under certain conditions
Mandatory training on refrigerant handling
, 11. Records of all systems inspections, tests, and maintenance shall be
maintained on the premises for a minimum of years.
1
2
3
5
12. What is the term used to describe the potential of a substance to harm the
ozone layer?
Chemical stability
Toxicity level
Global warming potential
Ozone-depletion potential
13. Identify the CFC with the longest atmospheric lifetime
CFC 115
CFC 113
CFC 11
CFC 23
14. What is the altitude range of the ozone layer above the Earth's surface?
10 to 30 miles
15 to 25 miles
5 to 15 miles
20 to 40 miles
