EPA 608 UNIVERSAL EXAM 2025-2026 ACTUAL EXAM
ALL 250 QUESTIONS AND CORRECT VERIFIED
ANSWERS) |ALREADY GRADED A+
Overview:
The EPA 608 Certification is required for all technicians who maintain, service,
repair, or dispose of equipment that could release refrigerants into the atmosphere.
The Universal Certification demonstrates full competency across all areas of
refrigerant handling, including small appliances, high-pressure systems, and low-
pressure systems.
This 250-question verified exam set offers comprehensive practice and exam
readiness, helping candidates build confidence and improve their chances of
success on the first attempt.
Key Features:
✅ All 250 verified exam questions with correct answers.
✅ Covers Core, Type I, Type II, and Type III sections.
✅ Fully updated for the 2025–2026 EPA 608 exam standards.
✅ Includes detailed, verified solutions for accurate study.
✅ A+ graded resource for guaranteed reliability.
Purpose:
Provide complete exam coverage for EPA 608 Universal Certification.
Reinforce understanding of refrigerant regulations, safety, and proper
handling procedures.
Ensure candidates are exam-ready and confident.
Recommended For:
HVAC technicians preparing for EPA Section 608 Universal Certification.
, Students in HVAC training programs.
Professionals seeking re-certification or expanding their credential scope.
✅ With all 250 verified and correct answers, this is the most complete and up-
to-date resource for passing the EPA 608 Universal Exam (2025–2026) with
confidence.
What are two factors that, if present, are most likely to lead to an explosion with hydrocarbon
refrigerants? - ANSWER-A sufficient concentration of the refrigeration in the space and an ignition
source
An appliance normally containing more than 50 pounds of R-22 refrigerant was found to have a 35%
annual leak rate. After the repair, how many successful verification tests are required? - ANSWER-Two.
Performed before the appliance is recharged
All appliances must be equipped with a service aperture or process stub which is used when adding or
removing refrigerant from the appliance. What is typically used on small appliances? - ANSWER-A
straight piece of tubing that is entered using a piercing access valve. Process Tube
What is the primary purpose of a purge unit on a low-pressure chiller? - ANSWER-Remove
noncondensable from the system
Which of the following are recommended safe work practices when recovering refrigerants? - ANSWER-
Wear safety eyewear and butyl-lined gloves when connecting/disconnecting hoses
What is the state of the refrigerant leaving the receiver in a refrigeration system? - ANSWER-High
pressure liquid
Which of the following repairs would always be considered "major" under EPA's regulations? -
ANSWERReplacement of an evaporator coil
On low-pressure chillers, moisture most frequently enters the refrigeration system through: -
ANSWERLeaks from areas with gaskets or fittings
, How would you remove moisture from refrigerant in a system? - ANSWER-Use a filter drier
Where does refrigerant go after it leaves the purge unit of a low-pressure centrifugal system? -
ANSWER-The evaporator
Which refrigerants can be mixed in an appliance? - ANSWER-Refrigerants cannot be mixed
What gas should be used to leak check a system designed for use with R-410A that has been opened for
a major system repair? - ANSWER-Pressurized nitrogen
What is the term for removing refrigerant in any condition from a system and storing it in an external
container without necessarily testing or processing it in any way? - ANSWER-Recovery
What is meant by the term "high efficiency purge unit"? - ANSWER-Purge units that discharge a low
percentage of refrigerant with the air they remove
Before beginning a refrigerant recovery procedure, it is ALWAYS necessary to: - ANSWER-know the type
of refrigerant in the system
Which of the following gases is used as the baseline measurement for global warming potential? -
ANSWER-Carbon Dioxide
Which hydrocarbon refrigerant is approved for retrofit into existing household refrigerators? -
ANSWERHC R-600a 2 ounces or less
Recovered refrigerant may contain which of the following impurities? - ANSWER-Acids, moisture, and oil
A hydrostatic tube test kit will - ANSWER-determine if a lube leaks
ALL 250 QUESTIONS AND CORRECT VERIFIED
ANSWERS) |ALREADY GRADED A+
Overview:
The EPA 608 Certification is required for all technicians who maintain, service,
repair, or dispose of equipment that could release refrigerants into the atmosphere.
The Universal Certification demonstrates full competency across all areas of
refrigerant handling, including small appliances, high-pressure systems, and low-
pressure systems.
This 250-question verified exam set offers comprehensive practice and exam
readiness, helping candidates build confidence and improve their chances of
success on the first attempt.
Key Features:
✅ All 250 verified exam questions with correct answers.
✅ Covers Core, Type I, Type II, and Type III sections.
✅ Fully updated for the 2025–2026 EPA 608 exam standards.
✅ Includes detailed, verified solutions for accurate study.
✅ A+ graded resource for guaranteed reliability.
Purpose:
Provide complete exam coverage for EPA 608 Universal Certification.
Reinforce understanding of refrigerant regulations, safety, and proper
handling procedures.
Ensure candidates are exam-ready and confident.
Recommended For:
HVAC technicians preparing for EPA Section 608 Universal Certification.
, Students in HVAC training programs.
Professionals seeking re-certification or expanding their credential scope.
✅ With all 250 verified and correct answers, this is the most complete and up-
to-date resource for passing the EPA 608 Universal Exam (2025–2026) with
confidence.
What are two factors that, if present, are most likely to lead to an explosion with hydrocarbon
refrigerants? - ANSWER-A sufficient concentration of the refrigeration in the space and an ignition
source
An appliance normally containing more than 50 pounds of R-22 refrigerant was found to have a 35%
annual leak rate. After the repair, how many successful verification tests are required? - ANSWER-Two.
Performed before the appliance is recharged
All appliances must be equipped with a service aperture or process stub which is used when adding or
removing refrigerant from the appliance. What is typically used on small appliances? - ANSWER-A
straight piece of tubing that is entered using a piercing access valve. Process Tube
What is the primary purpose of a purge unit on a low-pressure chiller? - ANSWER-Remove
noncondensable from the system
Which of the following are recommended safe work practices when recovering refrigerants? - ANSWER-
Wear safety eyewear and butyl-lined gloves when connecting/disconnecting hoses
What is the state of the refrigerant leaving the receiver in a refrigeration system? - ANSWER-High
pressure liquid
Which of the following repairs would always be considered "major" under EPA's regulations? -
ANSWERReplacement of an evaporator coil
On low-pressure chillers, moisture most frequently enters the refrigeration system through: -
ANSWERLeaks from areas with gaskets or fittings
, How would you remove moisture from refrigerant in a system? - ANSWER-Use a filter drier
Where does refrigerant go after it leaves the purge unit of a low-pressure centrifugal system? -
ANSWER-The evaporator
Which refrigerants can be mixed in an appliance? - ANSWER-Refrigerants cannot be mixed
What gas should be used to leak check a system designed for use with R-410A that has been opened for
a major system repair? - ANSWER-Pressurized nitrogen
What is the term for removing refrigerant in any condition from a system and storing it in an external
container without necessarily testing or processing it in any way? - ANSWER-Recovery
What is meant by the term "high efficiency purge unit"? - ANSWER-Purge units that discharge a low
percentage of refrigerant with the air they remove
Before beginning a refrigerant recovery procedure, it is ALWAYS necessary to: - ANSWER-know the type
of refrigerant in the system
Which of the following gases is used as the baseline measurement for global warming potential? -
ANSWER-Carbon Dioxide
Which hydrocarbon refrigerant is approved for retrofit into existing household refrigerators? -
ANSWERHC R-600a 2 ounces or less
Recovered refrigerant may contain which of the following impurities? - ANSWER-Acids, moisture, and oil
A hydrostatic tube test kit will - ANSWER-determine if a lube leaks
