1|Page
EPA 608 CERTIFICATION EXAM|| LATELY
UPDATED QUESTIONS 2024-2025 WITH 100%
CORRECT ANSWERS|| LATEST AND COMPLETE
UPDATE 2025 WITH EXPERT VERIFIED
SOLUTIONS ALREADY GRADED A+|| ASSURED
PASS!!!
The EPA considers a major repair to be the replacement of what 4 items? -
ANSWER: 1.Evaporator
2.Condenser
3.Compressor
4.Auxillary Heat Exchanger
What is EPA 608 Type I certification? - ANSWER: Persons who maintain, service,
repair, or dispose of small appliances (containing 5 pounds of refrigerant (or less).
What is EPA 608 Type II certification? - ANSWER: Persons who maintain,
service, repair, or dispose of high and very high pressure appliances. Except small
appliances and motor vehicle air conditioning systems.
What is EPA 608 Type III certification? - ANSWER: Persons who maintain,
service, repair, or dispose of low pressure appliances.
,2|Page
What is EPA 608 Universal certification? - ANSWER: Persons who maintain,
service, repair, or dispose of both low and high pressure equipment, as well as
appliances.
HCFC's - ANSWER: HydroChloroFluoroCarbons
What are HydroChloroFluoroCarbons? - ANSWER: Commonly known as
HCFC's, they are a group of man-made compunds containing hydrogen, chlorine,
fluorine, and carbon.
A recovery cylinder must not be filled more than % of it's capacity by weight? -
ANSWER: 80%
How should refrigerant cylinders be shipped? - ANSWER: Up-right with proper
DOT classification tags.
What oil MUST be used with ALL HFC's for HVAC/Refrigeration but will also
work with CFC's and HCFC's. - ANSWER: Polyolester
HCFC's have very low atmospheric concentrations measured in parts per? -
ANSWER: Trillion
,3|Page
All cooling systems containing more than 50 lbs. of refrigerant must be repaired
when the annual leak rate exceeds ? - ANSWER: 15%
Medium-pressure appliance can use which of the following refrigerants:
R-12 R-22 R-123
R-11 - ANSWER: R-12
To Convert From Inches of Mercury To Millimeters of Mercury Absolute the
Inches of Mercury by 25.4 and the result from 760
Divide, Subract Multiply, Add Multiply, Subtract
Divide, Add - ANSWER: Multiply, Subtract
When the refrigerant is put back into a Type III chiller, following recovery and
system repair, where is it added? - ANSWER: The charging valve on the
evaporator.
What method is used to find suspected water tube leaks in chillers? - ANSWER:
Hydrostatic (tube) test
What temperature should be attained when removing oil from a low pressure
system to ensure a lower level of refrigerants in the oil? - ANSWER: 130-
Degrees F
, 4|Page
The typical design burst pressure for a rupture disc is what? - ANSWER: 15 PSIG
Excessive moisture collection in the purge unit can indicate what? - ANSWER:
Tube Leakage
Vacuum pumps need to be capable of pulling what level of vacuum? - ANSWER:
500 microns
All refrigeration systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds ? - ANSWER: 35%
The most efficient method of leak checking a charged low-pressure system is to
use? - ANSWER: Controlled hot water or heater blankets.
Systems with open drive compressors are prone to leak where? - ANSWER: At
the shaft seal.
What does ASHRAE standard 15 require? - ANSWER: A refrigerant monitor that
will sound and alarm and automatically start a ventilation system in equipment
rooms before the refrigerant concentration reaches the TLV- TWA.
TLV-TWA - ANSWER: Threshold Limit Value, Time Weighted Average
EPA 608 CERTIFICATION EXAM|| LATELY
UPDATED QUESTIONS 2024-2025 WITH 100%
CORRECT ANSWERS|| LATEST AND COMPLETE
UPDATE 2025 WITH EXPERT VERIFIED
SOLUTIONS ALREADY GRADED A+|| ASSURED
PASS!!!
The EPA considers a major repair to be the replacement of what 4 items? -
ANSWER: 1.Evaporator
2.Condenser
3.Compressor
4.Auxillary Heat Exchanger
What is EPA 608 Type I certification? - ANSWER: Persons who maintain, service,
repair, or dispose of small appliances (containing 5 pounds of refrigerant (or less).
What is EPA 608 Type II certification? - ANSWER: Persons who maintain,
service, repair, or dispose of high and very high pressure appliances. Except small
appliances and motor vehicle air conditioning systems.
What is EPA 608 Type III certification? - ANSWER: Persons who maintain,
service, repair, or dispose of low pressure appliances.
,2|Page
What is EPA 608 Universal certification? - ANSWER: Persons who maintain,
service, repair, or dispose of both low and high pressure equipment, as well as
appliances.
HCFC's - ANSWER: HydroChloroFluoroCarbons
What are HydroChloroFluoroCarbons? - ANSWER: Commonly known as
HCFC's, they are a group of man-made compunds containing hydrogen, chlorine,
fluorine, and carbon.
A recovery cylinder must not be filled more than % of it's capacity by weight? -
ANSWER: 80%
How should refrigerant cylinders be shipped? - ANSWER: Up-right with proper
DOT classification tags.
What oil MUST be used with ALL HFC's for HVAC/Refrigeration but will also
work with CFC's and HCFC's. - ANSWER: Polyolester
HCFC's have very low atmospheric concentrations measured in parts per? -
ANSWER: Trillion
,3|Page
All cooling systems containing more than 50 lbs. of refrigerant must be repaired
when the annual leak rate exceeds ? - ANSWER: 15%
Medium-pressure appliance can use which of the following refrigerants:
R-12 R-22 R-123
R-11 - ANSWER: R-12
To Convert From Inches of Mercury To Millimeters of Mercury Absolute the
Inches of Mercury by 25.4 and the result from 760
Divide, Subract Multiply, Add Multiply, Subtract
Divide, Add - ANSWER: Multiply, Subtract
When the refrigerant is put back into a Type III chiller, following recovery and
system repair, where is it added? - ANSWER: The charging valve on the
evaporator.
What method is used to find suspected water tube leaks in chillers? - ANSWER:
Hydrostatic (tube) test
What temperature should be attained when removing oil from a low pressure
system to ensure a lower level of refrigerants in the oil? - ANSWER: 130-
Degrees F
, 4|Page
The typical design burst pressure for a rupture disc is what? - ANSWER: 15 PSIG
Excessive moisture collection in the purge unit can indicate what? - ANSWER:
Tube Leakage
Vacuum pumps need to be capable of pulling what level of vacuum? - ANSWER:
500 microns
All refrigeration systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds ? - ANSWER: 35%
The most efficient method of leak checking a charged low-pressure system is to
use? - ANSWER: Controlled hot water or heater blankets.
Systems with open drive compressors are prone to leak where? - ANSWER: At
the shaft seal.
What does ASHRAE standard 15 require? - ANSWER: A refrigerant monitor that
will sound and alarm and automatically start a ventilation system in equipment
rooms before the refrigerant concentration reaches the TLV- TWA.
TLV-TWA - ANSWER: Threshold Limit Value, Time Weighted Average
