EPA Section 608 Technician Certification
Exam Practice Test
1. What is the primary environmental concern associated with CFC and HCFC
refrigerants?
A. Smog formation
B. Greenhouse effect only
C. Ozone layer depletion
D. Soil contamination
C. Ozone layer depletion
Rationale: CFCs and HCFCs release chlorine when broken down, which
destroys ozone molecules in the stratosphere.
2. Which refrigerant is classified as an HCFC?
A. R-134a
B. R-22
C. R-410A
D. R-744
R-22
Rationale: R-22 is a hydrochlorofluorocarbon (HCFC), partially ozone-
depleting but being phased out.
3. What is required before disposing of a refrigeration appliance?
A. Add more refrigerant
B. Evacuate refrigerant to required levels
C. Leave refrigerant sealed inside
D. Drain compressor oil only
Evacuate refrigerant to required levels
, Rationale: EPA regulations require refrigerant recovery to specified
vacuum levels before disposal.
4. Which refrigerant has zero ozone depletion potential?
A. R-12
B. R-22
C. R-134a
D. R-502
R-134a
Rationale: HFC-134a contains no chlorine and does not deplete the ozone
layer.
5. What is the purpose of a recovery machine?
A. Add refrigerant
B. Recycle refrigerant for immediate use
C. Remove refrigerant from a system
D. Increase system pressure
Remove refrigerant from a system
Rationale: Recovery machines safely extract refrigerant from HVAC
systems for storage or recycling.
6. Which certification is required to handle all types of refrigerants?
A. Type I
B. Type II
C. Type III
D. Universal
Universal
Rationale: Universal certification covers Type I, II, and III refrigerants.
7. What type of refrigerant is R-410A?
A. CFC
B. HCFC
C. HFC
D. Blended ammonia
HFC
, Rationale: R-410A is a hydrofluorocarbon with no ozone depletion
potential.
8. When must technicians repair leaks in appliances containing 50+ lbs of
refrigerant?
A. Within 1 year
B. When leak rate exceeds EPA threshold
C. Never required
D. Only during disposal
When leak rate exceeds EPA threshold
Rationale: EPA requires repair when leak rates exceed allowed limits for
the appliance category.
9. What is the primary function of a filter drier?
A. Increase pressure
B. Remove moisture and contaminants
C. Add oil
D. Measure refrigerant
Remove moisture and contaminants
Rationale: Filter driers trap moisture, acids, and debris in refrigerant
systems.
10.What is the first step before recovering refrigerant?
A. Start vacuum pump
B. Turn system off and isolate refrigerant
C. Add refrigerant oil
D. Increase system pressure
Turn system off and isolate refrigerant
Rationale: The system must be shut down and valves properly positioned
before recovery begins.
11.What does EPA Section 608 regulate?
A. Electrical wiring
B. Refrigerant handling
C. Plumbing codes
Exam Practice Test
1. What is the primary environmental concern associated with CFC and HCFC
refrigerants?
A. Smog formation
B. Greenhouse effect only
C. Ozone layer depletion
D. Soil contamination
C. Ozone layer depletion
Rationale: CFCs and HCFCs release chlorine when broken down, which
destroys ozone molecules in the stratosphere.
2. Which refrigerant is classified as an HCFC?
A. R-134a
B. R-22
C. R-410A
D. R-744
R-22
Rationale: R-22 is a hydrochlorofluorocarbon (HCFC), partially ozone-
depleting but being phased out.
3. What is required before disposing of a refrigeration appliance?
A. Add more refrigerant
B. Evacuate refrigerant to required levels
C. Leave refrigerant sealed inside
D. Drain compressor oil only
Evacuate refrigerant to required levels
, Rationale: EPA regulations require refrigerant recovery to specified
vacuum levels before disposal.
4. Which refrigerant has zero ozone depletion potential?
A. R-12
B. R-22
C. R-134a
D. R-502
R-134a
Rationale: HFC-134a contains no chlorine and does not deplete the ozone
layer.
5. What is the purpose of a recovery machine?
A. Add refrigerant
B. Recycle refrigerant for immediate use
C. Remove refrigerant from a system
D. Increase system pressure
Remove refrigerant from a system
Rationale: Recovery machines safely extract refrigerant from HVAC
systems for storage or recycling.
6. Which certification is required to handle all types of refrigerants?
A. Type I
B. Type II
C. Type III
D. Universal
Universal
Rationale: Universal certification covers Type I, II, and III refrigerants.
7. What type of refrigerant is R-410A?
A. CFC
B. HCFC
C. HFC
D. Blended ammonia
HFC
, Rationale: R-410A is a hydrofluorocarbon with no ozone depletion
potential.
8. When must technicians repair leaks in appliances containing 50+ lbs of
refrigerant?
A. Within 1 year
B. When leak rate exceeds EPA threshold
C. Never required
D. Only during disposal
When leak rate exceeds EPA threshold
Rationale: EPA requires repair when leak rates exceed allowed limits for
the appliance category.
9. What is the primary function of a filter drier?
A. Increase pressure
B. Remove moisture and contaminants
C. Add oil
D. Measure refrigerant
Remove moisture and contaminants
Rationale: Filter driers trap moisture, acids, and debris in refrigerant
systems.
10.What is the first step before recovering refrigerant?
A. Start vacuum pump
B. Turn system off and isolate refrigerant
C. Add refrigerant oil
D. Increase system pressure
Turn system off and isolate refrigerant
Rationale: The system must be shut down and valves properly positioned
before recovery begins.
11.What does EPA Section 608 regulate?
A. Electrical wiring
B. Refrigerant handling
C. Plumbing codes
