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SkillCat EPA 608 Certification ACTUAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS LATEST UPDATE THIS
YEAR
Exam Coverage – SkillCat EPA 608 Certification Exam
The EPA Section 608 certification is mandatory for all technicians who maintain, service, repair,
or dispose of appliances containing refrigerants, as required by the Clean Air Act . The exam
consists of a mandatory Core section (25 questions) plus one or more specialized sections: Type
I (small appliances, <5 lbs refrigerant), Type II (high-pressure appliances, except small and low-
pressure), and Type III (low-pressure appliances) . The Universal certification requires passing all
four sections (100 total questions). A passing score is 70% (18 out of 25 correct) in each section .
Key topics include: ozone depletion science; Clean Air Act and Montreal Protocol regulations;
the prohibition on venting refrigerants; refrigerant recovery, recycling, and reclamation
standards; evacuation levels (e.g., 4 inches Hg vacuum, 10 inches Hg vacuum, 500 microns); leak
detection and repair requirements based on appliance size and leak rate thresholds (e.g., 15%,
35%, 50%); safety procedures including SCBA use, nitrogen regulators, and butyl-lined gloves;
refrigerant properties and oil types (e.g., polyester oil for R-134a, mineral oil for CFCs); recovery
equipment standards; and specific procedures for small appliances .
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200 Randomized, Scenario-Based MCQs for SkillCat EPA 608 Exam
1. A technician is servicing a small appliance with a working compressor and must recover the
refrigerant before disposal. What is the minimum recovery level required for this appliance?
A) 50% of the refrigerant charge
B) 80% of the refrigerant charge
C) 90% of the refrigerant charge
D) 100% of the refrigerant charge
Answer: C
RATIONALE: When recovering refrigerant from a small appliance with a working compressor, the
EPA requires that at least 90% of the refrigerant be recovered before the appliance is disposed
of .
2. An HVAC technician notices a pungent, sharp smell coming from a system during service.
What is the most likely cause of this odor?
A) Normal refrigerant smell
B) A compressor burnout
C) A leak in the evaporator coil
D) Excess oil in the system
Answer: B
RATIONALE: A pungent or acrid odor during system servicing is a classic sign of a compressor
burnout, which occurs when the motor windings overheat and decompose the refrigerant and
oil .
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3. During an active recovery process with the compressor working, the technician must recover
refrigerant to what specific level?
A) 80% or 0 inches of vacuum
B) 90% or 10 inches of vacuum
C) 90% or 4 inches of vacuum
D) 95% or 2 inches of vacuum
Answer: C
RATIONALE: For active recovery on a system with a working compressor, EPA regulations require
recovering at least 90% of the refrigerant or achieving a 4-inch vacuum, whichever is met first .
4. A large industrial process refrigeration system contains 1,000 pounds of R-22 and has
exceeded the applicable leak rate threshold. How often is the owner required to perform a leak
inspection?
A) Annually
B) Every 6 months
C) Every 3 months
D) Monthly
Answer: C
RATIONALE: Industrial process refrigeration systems that exceed the leak rate must be inspected
for leaks every 3 months until the leak is repaired .
5. A technician needs to use nitrogen to service an appliance. What piece of equipment must be
installed on the nitrogen tank before use?
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A) Flow meter
B) Pressure regulator
C) Filter drier
D) Check valve
Answer: B
RATIONALE: A pressure regulator is required on nitrogen tanks to safely reduce the high cylinder
pressure to a usable level for system service, preventing equipment damage .
6. According to the Clean Air Act, what is the maximum daily fine the EPA can impose on a
technician for venting refrigerant?
A) 5,000perdayperviolationB)5,000perdayperviolationB)37,500 per day per violation
C) 10,000perdayperviolationD)10,000perdayperviolationD)50,000 per day per violation
Answer: B
RATIONALE: The Clean Air Act allows the EPA To impose fines of up to $37,500 per day for each
violation of venting refrigerants .
7. A technician who has just released refrigerant from a system must locate safety equipment
immediately. What is the first piece of equipment that should be found?
A) Fire extinguisher
B) Self-contained breathing apparatus (SCBA)
C) Safety goggles
D) Leak detector
Answer: B
SkillCat EPA 608 Certification ACTUAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS LATEST UPDATE THIS
YEAR
Exam Coverage – SkillCat EPA 608 Certification Exam
The EPA Section 608 certification is mandatory for all technicians who maintain, service, repair,
or dispose of appliances containing refrigerants, as required by the Clean Air Act . The exam
consists of a mandatory Core section (25 questions) plus one or more specialized sections: Type
I (small appliances, <5 lbs refrigerant), Type II (high-pressure appliances, except small and low-
pressure), and Type III (low-pressure appliances) . The Universal certification requires passing all
four sections (100 total questions). A passing score is 70% (18 out of 25 correct) in each section .
Key topics include: ozone depletion science; Clean Air Act and Montreal Protocol regulations;
the prohibition on venting refrigerants; refrigerant recovery, recycling, and reclamation
standards; evacuation levels (e.g., 4 inches Hg vacuum, 10 inches Hg vacuum, 500 microns); leak
detection and repair requirements based on appliance size and leak rate thresholds (e.g., 15%,
35%, 50%); safety procedures including SCBA use, nitrogen regulators, and butyl-lined gloves;
refrigerant properties and oil types (e.g., polyester oil for R-134a, mineral oil for CFCs); recovery
equipment standards; and specific procedures for small appliances .
, Page 2 of 84
200 Randomized, Scenario-Based MCQs for SkillCat EPA 608 Exam
1. A technician is servicing a small appliance with a working compressor and must recover the
refrigerant before disposal. What is the minimum recovery level required for this appliance?
A) 50% of the refrigerant charge
B) 80% of the refrigerant charge
C) 90% of the refrigerant charge
D) 100% of the refrigerant charge
Answer: C
RATIONALE: When recovering refrigerant from a small appliance with a working compressor, the
EPA requires that at least 90% of the refrigerant be recovered before the appliance is disposed
of .
2. An HVAC technician notices a pungent, sharp smell coming from a system during service.
What is the most likely cause of this odor?
A) Normal refrigerant smell
B) A compressor burnout
C) A leak in the evaporator coil
D) Excess oil in the system
Answer: B
RATIONALE: A pungent or acrid odor during system servicing is a classic sign of a compressor
burnout, which occurs when the motor windings overheat and decompose the refrigerant and
oil .
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3. During an active recovery process with the compressor working, the technician must recover
refrigerant to what specific level?
A) 80% or 0 inches of vacuum
B) 90% or 10 inches of vacuum
C) 90% or 4 inches of vacuum
D) 95% or 2 inches of vacuum
Answer: C
RATIONALE: For active recovery on a system with a working compressor, EPA regulations require
recovering at least 90% of the refrigerant or achieving a 4-inch vacuum, whichever is met first .
4. A large industrial process refrigeration system contains 1,000 pounds of R-22 and has
exceeded the applicable leak rate threshold. How often is the owner required to perform a leak
inspection?
A) Annually
B) Every 6 months
C) Every 3 months
D) Monthly
Answer: C
RATIONALE: Industrial process refrigeration systems that exceed the leak rate must be inspected
for leaks every 3 months until the leak is repaired .
5. A technician needs to use nitrogen to service an appliance. What piece of equipment must be
installed on the nitrogen tank before use?
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A) Flow meter
B) Pressure regulator
C) Filter drier
D) Check valve
Answer: B
RATIONALE: A pressure regulator is required on nitrogen tanks to safely reduce the high cylinder
pressure to a usable level for system service, preventing equipment damage .
6. According to the Clean Air Act, what is the maximum daily fine the EPA can impose on a
technician for venting refrigerant?
A) 5,000perdayperviolationB)5,000perdayperviolationB)37,500 per day per violation
C) 10,000perdayperviolationD)10,000perdayperviolationD)50,000 per day per violation
Answer: B
RATIONALE: The Clean Air Act allows the EPA To impose fines of up to $37,500 per day for each
violation of venting refrigerants .
7. A technician who has just released refrigerant from a system must locate safety equipment
immediately. What is the first piece of equipment that should be found?
A) Fire extinguisher
B) Self-contained breathing apparatus (SCBA)
C) Safety goggles
D) Leak detector
Answer: B
